{"id":"CVE-2026-98960","title":"btrfs: don't stash io_uring encoded data across -EAGAIN","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't stash io_uring encoded data across -EAGAIN\n\nReturning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU\nleaks if the request is cancelled or th…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 34310c442e175f286b4c06ab5caa4e0b267ea31c < 4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e","Linux >= 34310c442e175f286b4c06ab5caa4e0b267ea31c < 51562a8cb11628d3a5e105b4c347ec5473e5745f","Linux 6.13"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T12:19:28.651Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98960","references":[{"url":"https://git.kernel.org/stable/c/4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e"},{"url":"https://git.kernel.org/stable/c/51562a8cb11628d3a5e105b4c347ec5473e5745f"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T13:24:55.554Z","slug":"CVE-2026-98960","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't stash io_uring encoded data across -EAGAIN\n\nReturning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU\nleaks if the request is cancelled or the ring exits before reissue.\nio_uring does not free driver PDU allocations on cleanup.\n\nWrite: io_queue_sqe() always issues with IO_URING_F_NONBLOCK first, so\nreturn -EAGAIN before allocating and free data on every exit.\n\nRead: free on nowait -EAGAIN too; only -EIOCBQUEUED keeps the allocation\nfor btrfs_uring_read_finished().\n\n## Affected\n\n- `Linux >= 34310c442e175f286b4c06ab5caa4e0b267ea31c < 4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e`\n- `Linux >= 34310c442e175f286b4c06ab5caa4e0b267ea31c < 51562a8cb11628d3a5e105b4c347ec5473e5745f`\n- `Linux 6.13`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}