#VU106234 Input validation error in Linux kernel - CVE-2022-49739

Vulnerability identifier: #VU106234

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-2022-49739

CWE-ID: CWE-20

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 improper input validation within the gfs2_dinode_in() function in fs/gfs2/glops.c, within the gfs2_unstuffer_page() function in fs/gfs2/bmap.c, within the stuffed_readpage() function in fs/gfs2/aops.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/45df749f827c286adbc951f2a4865b67f0442ba9
https://git.kernel.org/stable/c/46c9088cabd4d0469fdb61ac2a9c5003057fe94d
https://git.kernel.org/stable/c/4d4cb76636134bf9a0c9c3432dae936f99954586
https://git.kernel.org/stable/c/70376c7ff31221f1d21db5611d8209e677781d3a
https://git.kernel.org/stable/c/7c414f6f06e9a3934901b6edc3177ae5a1e07094
https://git.kernel.org/stable/c/d458a0984429c2d47e60254f5bc4119cbafe83a2

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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.