#VU98877 Use-after-free in Linux kernel - CVE-2024-49960

Vulnerability identifier: #VU98877

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-49960

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the flush_work() function in fs/ext4/super.c. A local user can escalate privileges on the system.

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/9203817ba46ebba7c865c8de2aba399537b6e891
https://git.kernel.org/stable/c/fa78fb51d396f4f2f80f8e96a3b1516f394258be
https://git.kernel.org/stable/c/b85569585d0154d4db1e4f9e3e6a4731d407feb0
https://git.kernel.org/stable/c/0ce160c5bdb67081a62293028dc85758a8efb22a

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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.