SB2025082895 - Infinite loop in Linux kernel landlock

Description

This security bulletin contains information about 1 vulnerability.

1) Infinite loop (CVE-ID: CVE-2025-38651)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 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

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

The vulnerability exists due to infinite loop within the get_id_range(), test_range1_rand0(), test_range1_rand1(), test_range1_rand15(), test_range1_rand16(), test_range2_rand0(), test_range2_rand1(), test_range2_rand2(), test_range2_rand15() and test_range2_rand16() functions in security/landlock/id.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/127183361b69dbb7ac3246ad4726f93400481249
• https://git.kernel.org/stable/c/7d9ec2cfe12dd0d7c1a58213b9bef1bec66a3189
• https://git.kernel.org/stable/c/e0a69cf2c03e61bd8069becb97f66c173d0d1fa1