ืืื ืื ืืืคึผืืึทืืขื ืืืืฉืึทื ืคืื ืื Futex (ืฉื ืขื Userspace Mutex) ืกืืกืืขื ืจืืคื, ืึธื ืืืืื ืืึผืจืื ืืึทื ืืฅ ื ืึธื ืคืจืื ืืื ืืืืขืงืืึทื ืืื ืืืืืึทื ืืืืึทื. ืืึธืก, ืืื ืงืขืจ, ืืขืจืืืืื ืื ืึทืืึทืงืขืจ ืฆื ืืืกืคืืจื ืืืื ืงืึธื ืืื ืืขื ืงืึธื ืืขืงืกื ืคืื ืื ืงืขืจื, ืืื ืึทืืข ืื ืงืึทื ืกืึทืงืืืขื ืกืึทื ืคืื ืึท ืืืืขืจืืืื ืคืื ื ืคืื ืืืื ืื ื. ืื ืืืึทืื ืขืจืึทืืืืืื ืืื ืืขืืืขื ืืื ืื ืืขืืช ืืึทื ืืืขืจ ืงืึธื.
ืงืขืจืขืงืฉืึทื ืื ืืืึทืื ืขืจืึทืืืืืื ืืื ืืจืืืก ืืื ืื ืืื ืืงืก ืืืืคึผื ืืื ืืข ืืืืฃ 28 ืืื ืืืจ ืืื ืืขื ืืึธื ืคืจืืขืจ ื ืขืืื ืขืก ืืื ืืจืืื ืืื ืงืขืจื ืึทืื 5.10.12, 5.4.94, 4.19.172, 4.14.218.
ืืขืฉืึทืก ืื ืืืกืงืืกืืข ืคืื โโืืขื ืคืึทืจืจืืืื, ืขืก ืืื ืืขืืืขื ืกืึทืืืืฉืขืกืืื ืึทื ืื ืืืึทืื ืขืจืึทืืืืืื ืืืืืกืฅ ืืื ืึทืืข ืงืขืจื ืึทืื ืืื ื 2008:
https://www.openwall.com/lists/oss-security/2021/01/29/3
FWIW, this commit has: Fixes: 1b7558e457ed ("futexes: fix fault handling in futex_lock_pi") and that other commit is from 2008. So probably all currently maintained Linux distros and deployments are affected, unless something else mitigated the issue in some kernel versions.
ืืงืืจ: linux.org.ru