CVE-2021-32810Critical· 9.8▾ MidnightData race in crossbeam-deque
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.4 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 4.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
1.9%
Last analysed / modified upstream
In the affected version of this crate, the result of the race condition is that one or more tasks in the worker queue can be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this can cause double free and a memory leak. If not, this still can cause a logical bug.
Crates using Stealer::steal, Stealer::steal_batch, or Stealer::steal_batch_and_pop are affected by this issue.
Credits to @kmaork for discovering, reporting and fixing the bug.
crossbeam-deque >= 0.8.0, < 0.8.1Upgrade to a patched release:
crossbeam-deque 0.8.1