# CVE-2022-49912: linux: In the Linux kernel, the following vulnerability has been resolved:  btrfs: fix ulist leaks in error paths of qgroup...

CVE-2022-49912 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49912, released May 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49912
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  btrfs: fix ulist leaks in error paths of qgroup self tests  In the test_no_shared_qgroup() and test_multiple_refs() qgroup self tests, if we fail to add the tree ref, remove the extent item or remove the extent ref, we are returning from the test function without freeing the "old_roots" ulist that was allocated by the previous calls to btrfs_find_all_roots(). Fix that by calling ulist_free() before returning.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.8-1 | [DEBIAN-CVE-2022-49912](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49912.md) | May 1, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.0.8-1 | [DEBIAN-CVE-2022-49912](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49912.md) | May 1, 2025 |
| Linux | linux Debian 14 | 6.0.8-1 | [DEBIAN-CVE-2022-49912](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49912.md) | May 1, 2025 |

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