Use of uninitialized resource in Linux kernel block driver

1) Use of uninitialized resource

EUVDB-ID: #VU90881

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26638

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: No

Description

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

The vulnerability exists due to use of uninitialized resource within the __sock_xmit() function in drivers/block/nbd.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

http://git.kernel.org/stable/c/d9c54763e5cdbbd3f81868597fe8aca3c96e6387
http://git.kernel.org/stable/c/1960f2b534da1e6c65fb96f9e98bda773495f406
http://git.kernel.org/stable/c/b0028f333420a65a53a63978522db680b37379dd
http://git.kernel.org/stable/c/78fbb92af27d0982634116c7a31065f24d092826

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.