CVE-2026-98245
- Source
- https://cve.org/CVERecord?id=CVE-2026-98245
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98245.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98245
- Downstream
- Published
- 2026-10-06T08:45:14Z
- Modified
- 2026-10-07T02:47:30Z
- Summary
- btrfs: take commit root semaphore when iterating in mark_block_group_to_copy()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
btrfs: take commit root semaphore when iterating in mark_block_group_to_copy()
mark_block_group_to_copy() iterates over the commit root with skip_locking=true. A concurrent transaction commit can swap and free the commit root during iteration, causing use-after-free when accessing extent buffers.
Fix it by using path->need_commit_sem to protect the commit root search.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98245.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4
- https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200
- https://git.kernel.org/stable/c/8e2007b263ea250251ec3021a0a197da990ee1a8
- https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98245.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98245
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced78ce9fc269af6e69c1399ab910ba6bc81c934f67Fixed8e2007b263ea250251ec3021a0a197da990ee1a8Fixed709f6a5e986535005110c6c69b322f63631cb200Fixedc32490c6d3f3a9f2d177d57c7eb8bbc347561d08Fixed0594e3423f4ba3137c734371169491f9a98e9af4