#VU91317 Improper locking in Linux kernel - CVE-2024-27415

Vulnerability identifier: #VU91317

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-2024-27415

CWE-ID: CWE-667

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 locking within the nf_conntrack_init_end() function in net/netfilter/nf_conntrack_core.c, within the nf_ct_bridge_pre() function in net/bridge/netfilter/nf_conntrack_bridge.c, within the IS_ENABLED() and br_nf_pre_routing() functions in net/bridge/br_netfilter_hooks.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/7c3f28599652acf431a2211168de4a583f30b6d5
https://git.kernel.org/stable/c/2b1414d5e94e477edff1d2c79030f1d742625ea0
https://git.kernel.org/stable/c/80cd0487f630b5382734997c3e5e3003a77db315
https://git.kernel.org/stable/c/cb734975b0ffa688ff6cc0eed463865bf07b6c01
https://git.kernel.org/stable/c/62e7151ae3eb465e0ab52a20c941ff33bb6332e9

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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.