Improper resource shutdown or release in Linux kernel - CVE-2026-45870
Published: May 28, 2026
Vulnerability identifier: #VU132618
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45870
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in the SUNRPC auth_gss XDR decoding functions when decoding GSSX context, status, or name data. A local user can trigger a decoding failure after memory has been allocated to cause a denial of service.
The issue occurs on error paths where previously allocated buffers remain unreferenced if a subsequent decode step fails.
How to mitigate CVE-2026-45870
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/3b56eb90feb8a3709417f5624f3871847d42bcb1
- https://git.kernel.org/stable/c/3e6397b056335cc56ef0e9da36c95946a19f5118
- https://git.kernel.org/stable/c/64303b92d94c0c7845a273acd8d84b796d6f1db7
- https://git.kernel.org/stable/c/b4af3806846778799cd4ab0766dc18341e777264
- https://git.kernel.org/stable/c/c81431b1b9fbd21e9a5a9211b5517b7295d18e6a
- https://git.kernel.org/stable/c/caf7eff432e91a9eba1c79fa545c2f54be15d62b
- https://git.kernel.org/stable/c/d79b9097a6a2b91471b40755f1225364be5d85ff
- https://git.kernel.org/stable/c/df10f23defff22c8d55fe6db74f6e4ce927145bf