linux: A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel,...
CVE-2021-3739 is fixed in 12 products on 1 platform, first by ELSA-2021-9457, released September 22, 2021. It is not reported as exploited. Patch Radar priority: High.
A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-uek · ol 8 | 0:5.4.17-2102.205.7.3.el8uek | ELSA-2021-9457 | Sep 22, 2021 |
| kernel-uek-container · ol 8 | 0:5.4.17-2102.205.7.3.el8 | ELSA-2021-9461 | Sep 22, 2021 |
| kernel-uek-container-debug · ol 8 | 0:5.4.17-2102.205.7.3.el8 | ELSA-2021-9461 | Sep 22, 2021 |
| kernel-uek-debug · ol 8 | 0:5.4.17-2102.205.7.3.el8uek | ELSA-2021-9457 | Sep 22, 2021 |
| kernel-uek-debug-devel · ol 8 | 0:5.4.17-2102.205.7.3.el8uek | ELSA-2021-9457 | Sep 22, 2021 |
| kernel-uek-devel · ol 8 | 0:5.4.17-2102.205.7.3.el8uek | ELSA-2021-9457 | Sep 22, 2021 |
| kernel-uek-doc · ol 8 | 0:5.4.17-2102.205.7.3.el8uek | ELSA-2021-9457 | Sep 22, 2021 |
| kernel-uek-tools · ol 8 | 0:5.4.17-2102.205.7.3.el7uek | ELSA-2021-9457 | Sep 22, 2021 |
| kernel-uek-tools-libs · ol 8 | 0:5.4.17-2102.205.7.3.el7uek | ELSA-2021-9457 | Sep 22, 2021 |
| linux · Debian 12.15 (bookworm) | 5.14.6-1 | DEBIAN-CVE-2021-3739 | Mar 10, 2022 |
| linux · Debian 13.5 (trixie) | 5.14.6-1 | DEBIAN-CVE-2021-3739 | Mar 10, 2022 |
| linux · Debian 14 | 5.14.6-1 | DEBIAN-CVE-2021-3739 | Mar 10, 2022 |
| perf · ol 8 | 0:5.4.17-2102.205.7.3.el7uek | ELSA-2021-9457 | Sep 22, 2021 |
| python-perf · ol 8 | 0:5.4.17-2102.205.7.3.el7uek | ELSA-2021-9457 | Sep 22, 2021 |
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