Vulnerability identifier: #VU90220

Vulnerability risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26689

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 __prep_cap() and __send_cap() functions in fs/ceph/caps.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

---

External links
http://git.kernel.org/stable/c/8180d0c27b93a6eb60da1b08ea079e3926328214
http://git.kernel.org/stable/c/70e329b440762390258a6fe8c0de93c9fdd56c77
http://git.kernel.org/stable/c/f3f98d7d84b31828004545e29fd7262b9f444139
http://git.kernel.org/stable/c/ae20db45e482303a20e56f2db667a9d9c54ac7e7
http://git.kernel.org/stable/c/7958c1bf5b03c6f1f58e724dbdec93f8f60b96fc
http://git.kernel.org/stable/c/cda4672da1c26835dcbd7aec2bfed954eda9b5ef

---

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.