Threats Tagged 'ubuntu-cve-2026-52930'
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Threats Tagged 'ubuntu-cve-2026-52930'
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In the Linux kernel, the following vulnerability has been resolved: ipc/shm: serialize orphan cleanup with shm_nattch updates shm_destroy_orphaned()…CVE-2026-52930 0 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. Join the discussion | GCVE Database | 06/24/2026, 08:16:00 UTC Added: 07/17/2026, 10:18:29 UTC |
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