Ubuntu update for linux-lowlatency



Published: 2024-02-14 | Updated: 2024-05-13
Risk High
Patch available YES
Number of vulnerabilities 10
CVE-ID CVE-2023-32250
CVE-2023-32252
CVE-2023-32257
CVE-2023-34324
CVE-2023-35827
CVE-2023-46813
CVE-2023-6039
CVE-2023-6176
CVE-2023-6622
CVE-2024-0641
CWE-ID CWE-362
CWE-476
CWE-833
CWE-416
CWE-284
CWE-667
Exploitation vector Network
Public exploit Public exploit code for vulnerability #6 is available.
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

linux-image-raspi-nolpae (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-raspi (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-lowlatency-64k (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-1046-raspi (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.15.0-94-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 10 vulnerabilities.

1) Race condition

EUVDB-ID: #VU77497

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32250

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition within the fs/ksmbd/connection.c in ksmbd in Linux kernel when processing SMB2_SESSION_SETUP commands. A remote attacker can exploit the race by sending concurrent session setup and logoff request and execute arbitrary code on the system.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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) NULL pointer dereference

EUVDB-ID: #VU80492

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32252

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error when handling SMB2_LOGOFF commands in ksmbd. A remote attacker can send specially crafted data to the server and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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.

3) Race condition

EUVDB-ID: #VU80494

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32257

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition when handling SMB2_SESSION_SETUP and SMB2_LOGOFF commands. A remote attacker can send specially crafted data to the affected server, trigger a race condition and execute arbitrary code on the system.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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.

4) Deadlock

EUVDB-ID: #VU81900

Risk: Medium

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34324

CWE-ID: CWE-833 - Deadlock

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to improper event handling in Linux kernel. A malicious guest can disable paravirtualized device to cause a deadlock in a backend domain (other than dom0).

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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

5) Use-after-free

EUVDB-ID: #VU82758

Risk: Low

CVSSv3.1: 6.1 [AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-35827

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the ravb_remove in drivers/net/ethernet/renesas/ravb_main.c. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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) Improper access control

EUVDB-ID: #VU82764

Risk: Low

CVSSv3.1: 7.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-46813

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

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

The vulnerability exists due to improper access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses. A local user can gain arbitrary write access to kernel memory and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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.

7) Use-after-free

EUVDB-ID: #VU83905

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6039

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the lan78xx_disconnect() function in drivers/net/usb/lan78xx.c. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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) NULL pointer dereference

EUVDB-ID: #VU84096

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6176

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 API for the cryptographic algorithm scatterwalk functionality in scatterwalk_copychunks(). A local user can send a malicious packet with specific socket configuration and crash the OS kernel.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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) NULL pointer dereference

EUVDB-ID: #VU84512

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6622

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 within the nft_dynset_init() function in net/netfilter/nft_dynset.c in nf_tables. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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.

10) Improper locking

EUVDB-ID: #VU86245

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-0641

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to double-locking error within the tipc_crypto_key_revoke() function in net/tipc/crypto.c. A malicious guest can exploit this vulnerability to cause a deadlock, resulting in a denial of service.

Mitigation

Update the affected package linux-lowlatency to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1046.44

linux-image-raspi (Ubuntu package): before 5.15.0.1046.44

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.94.94

linux-image-lowlatency (Ubuntu package): before 5.15.0.94.94

linux-image-5.15.0-1046-raspi (Ubuntu package): before 5.15.0-1046.49

linux-image-5.15.0-94-lowlatency-64k (Ubuntu package): before 5.15.0-94.104~20.04.1

linux-image-5.15.0-94-lowlatency (Ubuntu package): before 5.15.0-94.104~20.04.1

External links

http://ubuntu.com/security/notices/USN-6626-2


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.



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