Threats Tagged 'ghsa-86jr-9j73-5pc8'
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Threats Tagged 'ghsa-86jr-9j73-5pc8'
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A use-after-free vulnerability in the Linux kernel's NFS daemon (nfsd) was resolved. The issue involves improper handling of RCU (Read-Copy-Update) locking around cmpxchg operations on nfsd_file objects, leading to potential dereferencing of freed memory. The flaw arises because nfsd_file objects are freed via call_rcu without SLAB_TYPESAFE_BY_RCU, allowing the slab page to be reclaimed after the RCU grace period. The fix involves correctly acquiring and releasing rcu_read_lock around the cmpxchg retry block to prevent use of recycled memory. Join the discussion | GCVE Database | 09/11/2026, 21:31:35 UTC Added: 09/12/2026, 00:42:45 UTC |
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