{"id":"CVE-2026-43308","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()\n\nThere is no need to BUG(), we can just return an error and log an error\nmessage.","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()\n\nThere is no need to BUG(), we can just return an error and log an error\nmessage.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.31, < 6.19.6"],"patched":["linux_kernel 6.19.6"],"published":"2026-05-08","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:30.710","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-43308","references":[{"url":"https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6ad4caadc6343c3d7987bf3211f15d66135c4c42","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00143,"epssPercentile":0.03215,"ingestedAt":"2026-10-15T11:00:41.710Z","slug":"CVE-2026-43308","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()\n\nThere is no need to BUG(), we can just return an error and log an error\nmessage.\n\n## Affected\n\n- `linux_kernel >= 2.6.31, < 6.19.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.6`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":222278,"id":"CVE-2026-43308","ts":1792065865107,"field":"cvss","old":null,"new":"5.5"},{"seq":222277,"id":"CVE-2026-43308","ts":1792065865107,"field":"severity","old":"none","new":"medium"}]}