Memory leak in Linux kernel ceph

1) Memory leak

EUVDB-ID: #VU104368

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-2022-49109

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the ceph_get_snapdir() function in fs/ceph/inode.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/322794d3355c33adcc4feace0045d85a8e4ed813
https://git.kernel.org/stable/c/3ae7163598c611a8892698e0c056fe794e52b44b
https://git.kernel.org/stable/c/9cd21981dedfb4fe9f344529e4be35727cb10940
https://git.kernel.org/stable/c/b2d9bb3f06abddefdfa740b0a604575b6797e1bf

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.