{"id":"CVE-2026-31777","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Check the error for index mapping\n\nThe ctxfi driver blindly assumed a proper value returned from\ndaio_device_index(), but it's not always true","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Check the error for index mapping\n\nThe ctxfi driver blindly assumed a proper value returned from\ndaio_device_index(), but it's not always true.  Add a prop…","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, < 6.19.12","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.12"],"published":"2026-05-01","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:29.530","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-31777","references":[{"url":"https://git.kernel.org/stable/c/277c6960d4ddb94d16198afd70c92c3d4593d131","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/971854e7b6ddda78669d3d0cf6566c7b8aca1fdb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d4d3b8cbb70a2de247cbfe99bdb232aef9ed59bc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00143,"epssPercentile":0.03229,"ingestedAt":"2026-10-15T11:00:41.711Z","slug":"CVE-2026-31777","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Check the error for index mapping\n\nThe ctxfi driver blindly assumed a proper value returned from\ndaio_device_index(), but it's not always true.  Add a proper error\ncheck to deal with the error from the function.\n\n## Affected\n\n- `linux_kernel >= 2.6.31, < 6.19.12`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.12`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":222262,"id":"CVE-2026-31777","ts":1792065862284,"field":"cvss","old":null,"new":"5.5"},{"seq":222261,"id":"CVE-2026-31777","ts":1792065862284,"field":"severity","old":"none","new":"medium"}]}