CVE-2024-44963
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-44963
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-44963.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-44963
- Downstream
- Related
- Published
- 2024-09-04T18:36:00.948Z
- Modified
- 2025-11-28T02:35:36.061167Z
- Summary
- btrfs: do not BUG_ON() when freeing tree block after error
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
btrfs: do not BUG_ON() when freeing tree block after error
When freeing a tree block, at btrfsfreetreeblock(), if we fail to create a delayed reference we don't deal with the error and just do a BUGON(). The error most likely to happen is -ENOMEM, and we have a comment mentioning that only -ENOMEM can happen, but that is not true, because in case qgroups are enabled any error returned from btrfsqgrouptraceextentpost() (can be -EUCLEAN or anything returned from btrfssearchslot() for example) can be propagated back to btrfsfreetree_block().
So stop doing a BUG_ON() and return the error to the callers and make them abort the transaction to prevent leaking space. Syzbot was triggering this, likely due to memory allocation failure injection.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44963.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/22d907bcd283d69d5e60497fc0d51969545c583b
- https://git.kernel.org/stable/c/98251cd60b4d702a8a81de442ab621e83a3fb24f
- https://git.kernel.org/stable/c/bb3868033a4cccff7be57e9145f2117cbdc91c11
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44963.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-44963