{"id":"CVE-2026-98245","published":"2026-10-06T09:18:12.643","lastModified":"2026-10-06T09:18:12.643","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: take commit root semaphore when iterating in mark_block_group_to_copy()\n\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\n\nFix it by using path->need_commit_sem to protect the commit root search.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4","tags":[]},{"url":"https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200","tags":[]},{"url":"https://git.kernel.org/stable/c/8e2007b263ea250251ec3021a0a197da990ee1a8","tags":[]},{"url":"https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}