CVE-2026-52930
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ipc/shm: serialize orphan cleanup with shm_nattch updates
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | b1e9aef48e4d8a0c1b54fb913077b0824ed7d650 | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | 92cda2593cf2ed25b0e9d78e5e6d8303bba1a064 | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | 1f0d01e35dbb228084d5187212e32c91a30dcbeb | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | 6560be3f6a5bb84f006f184f0c966747bb58e1a3 | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | b5107b4ce3ad45fcf369ee2058c8910620f4b5a8 | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | db752ebfdaf2c7f27cd9690ef48b616af068319c | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | 030bbc857bd51d4b25a90d931d3f8775ef22823a | Unavailable | None listed |
| 4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d | affected | git | 2e5c6f4fd4001562781e99bbfc7f1f0127187542 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.1 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.13 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |