#VU102056 Use-after-free in Linux kernel - CVE-2024-53177

Vulnerability identifier: #VU102056

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-2024-53177

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 SMB2_query_info_free(), invalidate_all_cached_dirs(), smb2_cached_lease_break(), cached_dir_lease_break() and cfids_laundromat_worker() functions in fs/smb/client/cached_dir.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/47655a12c6b1bca8fa230085eab2e85a076932b7
https://git.kernel.org/stable/c/791f833053578b9fd24252ebb7162a61bc3f805b
https://git.kernel.org/stable/c/97e2afcac0bebfef6a5360f4267ce4c44507b845
https://git.kernel.org/stable/c/a9685b409a03b73d2980bbfa53eb47555802d0a9

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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.