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CVE-2026-52930

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7c77a9105b9b7130fb7f1a7e0cc57559cb6becb72c90d0fb1b124623770cca7e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["ipc/shm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.1"},{"lessThan":"3.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["ipc/shm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b1e9aef48e4d8a0c1b54fb913077b0824ed7d650","status":"affected","version":"4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d","versionType":"git"},{"lessThan":"92cda2593cf2ed25b0e9d78e5e6d8303bba1a064","status":"affected","version":"4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d","versionType":"git"},{"lessThan":"1f0d01e35dbb228084d5187212e32c91a30dcbeb","status":"affected","version":"4c677e2eefdba9c5bfc4474e2e91b26ae845…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["ipc/shm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.1"},{"lessThan":"3.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["ipc/shm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b1e9aef48e4d8a0c1b54fb913077b0824ed7d650","status":"affected","version":"4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d","versionType":"git"},{"lessThan":"92cda2593cf2ed25b0e9d78e5e6d8303bba1a064","status":"affected","version":"4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d","versionType":"git"},{"lessThan":"1f0d01e35dbb228084d5187212e32c91a30dcbeb","status":"affected","version":"4c677e2eefdba9c5bfc4474e2e91b26ae845…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/affected/0

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/030bbc857bd51d4b25a90d931d3f8775ef22823a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/1f0d01e35dbb228084d5187212e32c91a30dcbeb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/2e5c6f4fd4001562781e99bbfc7f1f0127187542"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/6560be3f6a5bb84f006f184f0c966747bb58e1a3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/92cda2593cf2ed25b0e9d78e5e6d8303bba1a064"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/b1e9aef48e4d8a0c1b54fb913077b0824ed7d650"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/b5107b4ce3ad45fcf369ee2058c8910620f4b5a8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/db752ebfdaf2c7f27cd9690ef48b616af068319c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:12b5b634230d4433b74bdd7bb061ac4980aa2821951c2ccf478c45ecb2d4965c · sha256:dd311b89e001a831… · /containers/cna/references/5

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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