Out-of-bounds read in Linux kernel - CVE-2026-72318
Published: August 16, 2026
Vulnerability identifier: #VU143126
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72318
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in parse_dfs_referrals() when processing a malicious DFS referral response from a server. A remote attacker can supply crafted referral string offsets to cause an out-of-bounds read and disclose sensitive information.
The issue occurs when DfsPathOffset or NetworkAddressOffset points beyond the end of the response buffer, leading to a negative length being forwarded as a size_t in the non-Unicode path.
Affected software
Linux kernel
How to mitigate CVE-2026-72318
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/027a84ac6b50c12ef767c15abfc58aa865820e9e
- https://git.kernel.org/stable/c/76c607b9353d377b1d1b11db50e743eee0ccf658
- https://git.kernel.org/stable/c/929a85932d14190988f1eafd6ee8cc68d66ace0b
- https://git.kernel.org/stable/c/b784cd1c24d89bf71be2efe1e948ff7c03371e57
- https://git.kernel.org/stable/c/c37abc99bb3de3d3219ecef253d649f74117fd83
- https://git.kernel.org/stable/c/d64b6be5740ce230aca184d8d224c75d9866045d