#VU104616 NULL pointer dereference in Linux kernel - CVE-2022-49707

Vulnerability identifier: #VU104616

Vulnerability 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-2022-49707

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 ext4_resize_begin() function in fs/ext4/resize.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0dc2fca8e4f9ac4a40e8424a10163369cca0cc06
https://git.kernel.org/stable/c/33b1bba31f4c784d33d2c2517964bdccdc9204cd
https://git.kernel.org/stable/c/7c921328ac760bba780bdace41f4cd045f7f1405
https://git.kernel.org/stable/c/af75c481a2e45e70f62f5942c93695e95bf7bd21
https://git.kernel.org/stable/c/b55c3cd102a6f48b90e61c44f7f3dda8c290c694
https://git.kernel.org/stable/c/b9747263b13e5290ac4d63bec47e38f701303cad
https://git.kernel.org/stable/c/bfd004a1d3a062aac300523d406ac1f3e5f1a82c
https://git.kernel.org/stable/c/fba54289176702a7caac0b64738406775817f451

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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.