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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-52930 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ipc/shm: serialize orphan cleanup with shm_nattch updates shm_destroy_orphaned() walks the shm idr under shm_ids(ns).rwsem, but that does not serialize all fields tested by shm_may_destroy(). In particular, shm_nattch is updated while holding shm_perm.lock, and attach paths can do that without holding the rwsem. Do not decide that an orphaned segment is unused before taking the object lock. Move the shm_may_destroy() check under shm_perm.lock, matching the other destroy paths, and unlock the segment when it no longer qualifies for removal.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/030bbc857bd51d4b25a90d931d3f8775ef22823a kernel.org
https://git.kernel.org/stable/c/1f0d01e35dbb228084d5187212e32c91a30dcbeb kernel.org
https://git.kernel.org/stable/c/2e5c6f4fd4001562781e99bbfc7f1f0127187542 kernel.org
https://git.kernel.org/stable/c/6560be3f6a5bb84f006f184f0c966747bb58e1a3 kernel.org
https://git.kernel.org/stable/c/92cda2593cf2ed25b0e9d78e5e6d8303bba1a064 kernel.org
https://git.kernel.org/stable/c/b1e9aef48e4d8a0c1b54fb913077b0824ed7d650 kernel.org
https://git.kernel.org/stable/c/b5107b4ce3ad45fcf369ee2058c8910620f4b5a8 kernel.org
https://git.kernel.org/stable/c/db752ebfdaf2c7f27cd9690ef48b616af068319c kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-52930
NVD Published Date:
06/24/2026
NVD Last Modified:
06/24/2026
Source:
kernel.org