SUSE update for the Linux Kernel

Published: 2022-10-31

Risk	Low
Patch available	YES
Number of vulnerabilities	10
CVE-ID	CVE-2022-20008 CVE-2022-2503 CVE-2022-3169 CVE-2022-3239 CVE-2022-3303 CVE-2022-3424 CVE-2022-40307 CVE-2022-40768 CVE-2022-41218 CVE-2022-41848
CWE-ID	CWE-908 CWE-264 CWE-399 CWE-416 CWE-476 CWE-284 CWE-362
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #9 is available.
Vulnerable software	SUSE Linux Enterprise Real Time Extension Operating systems & Components / Operating system ocfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component ocfs2-kmp-rt Operating systems & Components / Operating system package or component kernel-syms-rt Operating systems & Components / Operating system package or component kernel-rt_debug-devel-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-devel Operating systems & Components / Operating system package or component kernel-rt_debug-debugsource Operating systems & Components / Operating system package or component kernel-rt_debug-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug Operating systems & Components / Operating system package or component kernel-rt-devel-debuginfo Operating systems & Components / Operating system package or component kernel-rt-devel Operating systems & Components / Operating system package or component kernel-rt-debugsource Operating systems & Components / Operating system package or component kernel-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt-base-debuginfo Operating systems & Components / Operating system package or component kernel-rt-base Operating systems & Components / Operating system package or component kernel-rt Operating systems & Components / Operating system package or component gfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component gfs2-kmp-rt Operating systems & Components / Operating system package or component dlm-kmp-rt-debuginfo Operating systems & Components / Operating system package or component dlm-kmp-rt Operating systems & Components / Operating system package or component cluster-md-kmp-rt-debuginfo Operating systems & Components / Operating system package or component cluster-md-kmp-rt Operating systems & Components / Operating system package or component kernel-source-rt Operating systems & Components / Operating system package or component kernel-devel-rt Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 10 vulnerabilities.

1) Use of uninitialized resource

EUVDB-ID: #VU63352

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-20008

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: No

Description

The vulnerability allows a local application to bypass certain security restrictions.

The vulnerability exists due to usage of uninitialized resources within the mmc_blk_read_single() function in block.c. A local application can obtain potentially sensitive information from memory when reading from an SD card that triggers errors.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU66810

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-2503

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the way dm-verity is used to restrict module/firmware loads to trusted root filesystem in LoadPin builds. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Resource management error

EUVDB-ID: #VU68780

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3169

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources in Linux kernel when handling a consecutive request of the NVME_IOCTL_RESET and the NVME_IOCTL_SUBSYS_RESET through the device file of the driver. A local user can force the a PCIe link to disconnect.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Use-after-free

EUVDB-ID: #VU68337

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3239

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the Linux kernel video4linux driver in the way user triggers em28xx_usb_probe() for the Empia 28xx based TV cards. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) NULL pointer dereference

EUVDB-ID: #VU68338

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3303

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel sound subsystem due to improper locking when handling the SNDCTL_DSP_SYNC ioctl. A privileged local user can trigger a NULL pointer dereference error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Use-after-free

EUVDB-ID: #VU69759

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3424

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the gru_set_context_option(), gru_fault() and gru_handle_user_call_os() functions in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Use-after-free

EUVDB-ID: #VU67915

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-40307

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the drivers/firmware/efi/capsule-loader.c in Linux kernel. A local user can trigger a use-after-free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Improper access control

EUVDB-ID: #VU67587

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-40768

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper access restrictions in the drivers/scsi/stex.c in the Linux kernel. A local user can obtain sensitive information from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Use-after-free

EUVDB-ID: #VU67657

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-41218

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the dvb_demux_open() and dvb_dmxdev_release() function in drivers/media/dvb-core/dmxdev.c in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

10) Race condition

EUVDB-ID: #VU68339

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-41848

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition in the drivers/char/pcmcia/synclink_cs.c in the Linux kernel. An attacker with physical proximity to the affected system can remove a PCMCIA device while calling ioctl, cause a race condition between mgslpc_ioctl and mgslpc_detach and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Real Time Extension: 12-SP5

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

ocfs2-kmp-rt: before 4.12.14-10.103.1

kernel-syms-rt: before 4.12.14-10.103.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug-devel: before 4.12.14-10.103.1

kernel-rt_debug-debugsource: before 4.12.14-10.103.1

kernel-rt_debug-debuginfo: before 4.12.14-10.103.1

kernel-rt_debug: before 4.12.14-10.103.1

kernel-rt-devel-debuginfo: before 4.12.14-10.103.1

kernel-rt-devel: before 4.12.14-10.103.1

kernel-rt-debugsource: before 4.12.14-10.103.1

kernel-rt-debuginfo: before 4.12.14-10.103.1

kernel-rt-base-debuginfo: before 4.12.14-10.103.1

kernel-rt-base: before 4.12.14-10.103.1

kernel-rt: before 4.12.14-10.103.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.103.1

gfs2-kmp-rt: before 4.12.14-10.103.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.103.1

dlm-kmp-rt: before 4.12.14-10.103.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.103.1

cluster-md-kmp-rt: before 4.12.14-10.103.1

kernel-source-rt: before 4.12.14-10.103.1

kernel-devel-rt: before 4.12.14-10.103.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223810-1/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.