#VU102174 Improper locking in Linux kernel - CVE-2024-53176

Vulnerability identifier: #VU102174

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-2024-53176

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 cifs_dentry_needs_reval() function in fs/smb/client/inode.c, within the init_cifs() and cifs_destroy_netfs() functions in fs/smb/client/cifsfs.c, within the free_cached_dir(), close_all_cached_dirs(), invalidate_all_cached_dirs(), cached_dir_lease_break(), init_cached_dir(), cfids_laundromat_worker(), init_cached_dirs() and free_cached_dirs() functions in fs/smb/client/cached_dir.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

---

External links
https://git.kernel.org/stable/c/3fa640d035e5ae526769615c35cb9ed4be6e3662
https://git.kernel.org/stable/c/548812afd96982a76a93ba76c0582ea670c40d9e
https://git.kernel.org/stable/c/73934e535cffbda1490fa97d82690a0f9aa73e94
https://git.kernel.org/stable/c/ff4528bbc82d0d90073751f7b49e7b9e9c7e5638

---

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.