{"id":"CVE-2026-80965","title":"ALSA: serial-u16550: Check card index validity at probe","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: serial-u16550: Check card index validity at probe\n\nserial-u16550 driver blindly trusts that the given devptr->id value is\nwithin the proper card index range at pr…","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","cvssSource":"vendor","cwe":["CWE-805"],"vendor":"Linux","product":"Linux","affected":["Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 41a952304cc8a308748e3f58462c879f2a9c4340","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < cc0f757d017f4271f137c77e130314bb23792347","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 1cb30691dc893aafcbc1e211e94764014c0f5d12","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 487ede9b648fc0eb15866f408c41aac2c57f85d5","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < fbf3fb097e66fc1874e54ecc46d600d9325480d6","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 7555e83d7738e65dc83921e3c85bbdc081f08f2f","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 6d6fdb24fe2eaf6174fc502284c6e1dc5f7242ba","Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < e0fb960b227fcdebe22e4f26c9486d60943c0424","Linux 2.6.16"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:45:49.194Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80965","references":[{"url":"https://git.kernel.org/stable/c/41a952304cc8a308748e3f58462c879f2a9c4340"},{"url":"https://git.kernel.org/stable/c/cc0f757d017f4271f137c77e130314bb23792347"},{"url":"https://git.kernel.org/stable/c/1cb30691dc893aafcbc1e211e94764014c0f5d12"},{"url":"https://git.kernel.org/stable/c/487ede9b648fc0eb15866f408c41aac2c57f85d5"},{"url":"https://git.kernel.org/stable/c/fbf3fb097e66fc1874e54ecc46d600d9325480d6"},{"url":"https://git.kernel.org/stable/c/7555e83d7738e65dc83921e3c85bbdc081f08f2f"},{"url":"https://git.kernel.org/stable/c/6d6fdb24fe2eaf6174fc502284c6e1dc5f7242ba"},{"url":"https://git.kernel.org/stable/c/e0fb960b227fcdebe22e4f26c9486d60943c0424"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80965.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80965"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532257"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80965"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80965"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80965.mbox"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00177,"epssPercentile":0.07182,"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80965","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nALSA: serial-u16550: Check card index validity at probe\n\nserial-u16550 driver blindly trusts that the given devptr->id value is\nwithin the proper card index range at probe.  It's OK for the devices\nthe driver itself creates at the module probe time, but if the device\nis bound manually via sysfs interface, this could be -1 as \"none\", and\nthis leads to OOB access for index[] and other parameters.\n\nAdd a sanity check for the card index and warn/correct it if it's a\nvalue out of the range.\n\n## Affected\n\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 41a952304cc8a308748e3f58462c879f2a9c4340`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < cc0f757d017f4271f137c77e130314bb23792347`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 1cb30691dc893aafcbc1e211e94764014c0f5d12`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 487ede9b648fc0eb15866f408c41aac2c57f85d5`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < fbf3fb097e66fc1874e54ecc46d600d9325480d6`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 7555e83d7738e65dc83921e3c85bbdc081f08f2f`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < 6d6fdb24fe2eaf6174fc502284c6e1dc5f7242ba`\n- `Linux >= 9caf6b5908e1e3b10478e9201ca1be809145253f < e0fb960b227fcdebe22e4f26c9486d60943c0424`\n- `Linux 2.6.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80965.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204217,"id":"CVE-2026-80965","ts":1789490240240,"field":"cvss","old":null,"new":"5.5"},{"seq":204216,"id":"CVE-2026-80965","ts":1789490240240,"field":"severity","old":"none","new":"medium"},{"seq":147488,"id":"CVE-2026-80965","ts":1789270211105,"field":"cvss","old":null,"new":"4.1"},{"seq":147487,"id":"CVE-2026-80965","ts":1789270211105,"field":"severity","old":"none","new":"medium"},{"seq":109236,"id":"CVE-2026-80965","ts":1789183731091,"field":"cvss","old":null,"new":"4.1"},{"seq":109235,"id":"CVE-2026-80965","ts":1789183731091,"field":"severity","old":"none","new":"medium"}]}