Multiple vulnerabilities in Linux kernel



| Updated: 2020-05-25
Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-11668
CVE-2020-11608
CVE-2020-11609
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

Updated 25.05.2020

Added vulnerabilities #2-3

1) NULL pointer dereference

EUVDB-ID: #VU27875

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-2020-11668

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 drivers/media/usb/gspca/xirlink_cit.c in Xirlink camera USB driver. A local user can pass specially crafted data to the driver and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 5.6

CPE2.3 External links

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a246b4d547708f33ff4d4b9a7a5dbac741dc89d8
https://github.com/torvalds/linux/commit/a246b4d547708f33ff4d4b9a7a5dbac741dc89d8
https://security.netapp.com/advisory/ntap-20200430-0004/
https://usn.ubuntu.com/4345-1/


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.

2) NULL pointer dereference

EUVDB-ID: #VU28220

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/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-2020-11608

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 in "drivers/media/usb/gspca/ov519.c" file in "ov511_mode_init_regs and ov518_mode_init_regs". A remote authenticated attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.6

CPE2.3 External links

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=998912346c0da53a6dbb71fab3a138586b596b30
https://github.com/torvalds/linux/commit/998912346c0da53a6dbb71fab3a138586b596b30
https://security.netapp.com/advisory/ntap-20200430-0004/
https://usn.ubuntu.com/4345-1/
https://usn.ubuntu.com/4364-1/
https://usn.ubuntu.com/4368-1/


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) NULL pointer dereference

EUVDB-ID: #VU28221

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/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-2020-11609

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 in the stv06xx subsystem in the "drivers/media/usb/gspca/stv06xx/stv06xx.c" and "drivers/media/usb/gspca/stv06xx/stv06xx_pb0100.c" files. A remote authenticated attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.6

CPE2.3 External links

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=485b06aadb933190f4bc44e006076bc27a23f205
https://github.com/torvalds/linux/commit/485b06aadb933190f4bc44e006076bc27a23f205
https://security.netapp.com/advisory/ntap-20200430-0004/
https://usn.ubuntu.com/4345-1/
https://usn.ubuntu.com/4364-1/
https://usn.ubuntu.com/4368-1/


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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



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