{"id":"CVE-2023-53643","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: don't access released socket during error recovery\n\nWhile the error recovery work is temporarily failing reconnect attempts,\nrunning the 'nvme list' command c…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: don't access released socket during error recovery\n\nWhile the error recovery work is temporarily failing reconnect attempts,\nrunning the 'nvme list' command c…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.1, < 6.1.18","linux_kernel >= 6.2, < 6.2.5"],"patched":["linux_kernel 6.2.5"],"published":"2025-10-07","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:45.263","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53643","references":[{"url":"https://git.kernel.org/stable/c/76d54bf20cdcc1ed7569a89885e09636e9a8d71d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d82f762db4776fa11de88018f0f5de2d5db72a72","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fe2d9e54165dadaa0d0cc3355c0be9c3e129fa0d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00166,"epssPercentile":0.05745,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:36:13.085900Z"},"ingestedAt":"2026-10-15T22:48:25.413Z","slug":"CVE-2023-53643","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: don't access released socket during error recovery\n\nWhile the error recovery work is temporarily failing reconnect attempts,\nrunning the 'nvme list' command causes a kernel NULL pointer dereference\nby calling getsockname() with a released socket.\n\nDuring error recovery work, the nvme tcp socket is released and a new one\ncreated, so it is not safe to access the socket without proper check.\n\n## Affected\n\n- `linux_kernel >= 6.1, < 6.1.18`\n- `linux_kernel >= 6.2, < 6.2.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.2.5`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}