NULL pointer dereference in Linux kernel pstore

1) NULL pointer dereference

EUVDB-ID: #VU90423

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-2023-52869

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 NULL pointer dereference within the pstore_register() function in fs/pstore/platform.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.10 - 6.7 rc7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10.3:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/bb166bdae1a7d7db30e9be7e6ccaba606debc05f
https://git.kernel.org/stable/c/379b120e4f27fd1cf636a5f85570c4d240a3f688
https://git.kernel.org/stable/c/63f637309baadf81a095f2653e3b807d4b5814b9
https://git.kernel.org/stable/c/1c426da79f9fc7b761021b5eb44185ba119cd44a
https://git.kernel.org/stable/c/ad5cb6deb41417ef41b9d6ff54f789212108606f
https://git.kernel.org/stable/c/a19d48f7c5d57c0f0405a7d4334d1d38fe9d3c1c
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.201
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.139
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.63
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.2
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7

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.