{"id":"CVE-2023-53643","summary":"nvme-tcp: don't access released socket during error recovery","details":"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 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.","modified":"2026-05-18T05:57:12.125806596Z","published":"2025-10-07T15:19:42.374Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53643.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/76d54bf20cdcc1ed7569a89885e09636e9a8d71d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d82f762db4776fa11de88018f0f5de2d5db72a72"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fe2d9e54165dadaa0d0cc3355c0be9c3e129fa0d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53643.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53643"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"02c57a82c0081141abc19150beab48ef47f97f18"},{"fixed":"fe2d9e54165dadaa0d0cc3355c0be9c3e129fa0d"},{"fixed":"d82f762db4776fa11de88018f0f5de2d5db72a72"},{"fixed":"76d54bf20cdcc1ed7569a89885e09636e9a8d71d"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53643.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.1.0"},{"fixed":"6.1.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53643.json"}}],"schema_version":"1.7.5"}