#VU98974 NULL pointer dereference in Linux kernel - CVE-2024-49850

Vulnerability identifier: #VU98974

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-2024-49850

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 bpf_core_apply() function in kernel/bpf/btf.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/dc7ce14f00bcd50641f2110b7a32aa6552e0780f
https://git.kernel.org/stable/c/2288b54b96dcb55bedebcef3572bb8821fc5e708
https://git.kernel.org/stable/c/584cd3ff792e1edbea20b2a7df55897159b0be3e
https://git.kernel.org/stable/c/e7e9c5b2dda29067332df2a85b0141a92b41f218
https://git.kernel.org/stable/c/3d2786d65aaa954ebd3fcc033ada433e10da21c4

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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.