#VU104847 Race condition within a thread in Linux kernel - CVE-2022-49579

Vulnerability identifier: #VU104847

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49579

CWE-ID: CWE-366

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 corrupt data.

The vulnerability exists due to a data race within the fib_multipath_hash() function in net/ipv4/route.c, within the mlxsw_sp_mp4_hash_init() function in drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c. A local user can corrupt data.

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/21fb844bc1dc1461f5038d655aa1a14f39e13049
https://git.kernel.org/stable/c/7998c12a08c97cc26660532c9f90a34bd7d8da5a
https://git.kernel.org/stable/c/918ee6592ab9a2ff5316d06cfd4aaef60ccabec6

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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.