linux: A flaw was found in the io-workqueue implementation in the Linux kernel versions prior to 5.15-rc1
CVE-2021-4023 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-4023, released March 10, 2022. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in the io-workqueue implementation in the Linux kernel versions prior to 5.15-rc1. The kernel can panic when an improper cancellation operation triggers the submission of new io-uring operations during a shortage of free space. This flaw allows a local user with permissions to execute io-uring requests to possibly crash the system.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.15.3-1 | DEBIAN-CVE-2021-4023 | Mar 10, 2022 |
| linux · Debian 13.5 (trixie) | 5.15.3-1 | DEBIAN-CVE-2021-4023 | Mar 10, 2022 |
| linux · Debian 14 | 5.15.3-1 | DEBIAN-CVE-2021-4023 | Mar 10, 2022 |
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