Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-52970
Published: June 25, 2026
Vulnerability identifier: #VU135407
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-52970
CWE-ID: CWE-772
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 a missing reference release in nft_ct_expect_obj_eval() in the netfilter nft_ct component when processing conntrack expectation objects. A local user can trigger the vulnerable code path to cause a denial of service.
How to mitigate CVE-2026-52970
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4
- https://git.kernel.org/stable/c/1dced0725e2fae3ac3416274db20a7ff5a46931d
- https://git.kernel.org/stable/c/26ab32ec73941871c97562ee1f39587950dc3b68
- https://git.kernel.org/stable/c/2aef1b13d5c0285f340512c6c07eb858fd018fd8
- https://git.kernel.org/stable/c/7b96242ceedfe249f158419f3254bcee04173ffe
- https://git.kernel.org/stable/c/84c422cea5a45fe56be839f25880f21fd33940cd
- https://git.kernel.org/stable/c/cdb9a25dd3416d427e8b2753210f8baf44207577
- https://git.kernel.org/stable/c/ecca618e1e339494911090474ed87742c0f73976