{"id":"CVE-2026-31651","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix NULL-deref on disconnect\n\nMake sure to deregister the controller before dropping the reference to\nthe driver data on disconnect to avoid NULL-pointer d…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix NULL-deref on disconnect\n\nMake sure to deregister the controller before dropping the reference to\nthe driver data on disconnect to avoid NULL-pointer d…","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","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 3.0.1, < 5.10.253","linux_kernel >= 5.11, < 5.15.203","linux_kernel >= 5.16, < 6.1.169","linux_kernel >= 6.2, < 6.6.135","linux_kernel >= 6.7, < 6.12.82","linux_kernel >= 6.13, < 6.18.23","linux_kernel >= 6.19, < 6.19.13","linux_kernel = 3.0","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.13"],"published":"2026-04-24","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:14.980","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-31651","references":[{"url":"https://git.kernel.org/stable/c/517b58e1d067115f80d198feee10192da4c424d0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/53f2642d77ab5f1f303388bff5500363c6cf962c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6446516e626ce7c44bdadbcbb3d7677a2c52ce93","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6468cab1173f44f7a4b7a05ce8abfdfd1ce1557a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8d09e75759cb2afc0732acfb5a14a93c03805a61","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ba3b9429de94958dc0060d9816a915dd75c34919","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c83a282615d8f7ba28cebddd54600b419d562d82","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dff34ef879c5e73298443956a8b391311ba78d57","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00117,"epssPercentile":0.01633,"ingestedAt":"2026-09-08T15:33:26.990Z","slug":"CVE-2026-31651","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix NULL-deref on disconnect\n\nMake sure to deregister the controller before dropping the reference to\nthe driver data on disconnect to avoid NULL-pointer dereferences or\nuse-after-free.\n\n## Affected\n\n- `linux_kernel >= 3.0.1, < 5.10.253`\n- `linux_kernel >= 5.11, < 5.15.203`\n- `linux_kernel >= 5.16, < 6.1.169`\n- `linux_kernel >= 6.2, < 6.6.135`\n- `linux_kernel >= 6.7, < 6.12.82`\n- `linux_kernel >= 6.13, < 6.18.23`\n- `linux_kernel >= 6.19, < 6.19.13`\n- `linux_kernel = 3.0`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.13`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221737,"id":"CVE-2026-31651","ts":1792035346551,"field":"cvss","old":null,"new":"5.5"},{"seq":221736,"id":"CVE-2026-31651","ts":1792035346551,"field":"severity","old":"none","new":"medium"}]}