{"id":"CVE-2023-52441","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix out of bounds in init_smb2_rsp_hdr()\n\nIf client send smb2 negotiate request and then send smb1 negotiate\nrequest, init_smb2_rsp_hdr is called for smb1 negoti…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix out of bounds in init_smb2_rsp_hdr()\n\nIf client send smb2 negotiate request and then send smb1 negotiate\nrequest, init_smb2_rsp_hdr is called for smb1 negoti…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-119"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.15.0, < 5.15.145","linux_kernel >= 5.16.0, < 6.1.53","linux_kernel >= 6.2.0, < 6.4.16"],"patched":["linux_kernel 6.4.16"],"published":"2024-02-21","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-52441","references":[{"url":"https://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00679,"epssPercentile":0.50925,"ingestedAt":"2026-08-04T10:39:37.571Z","slug":"CVE-2023-52441","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix out of bounds in init_smb2_rsp_hdr()\n\nIf client send smb2 negotiate request and then send smb1 negotiate\nrequest, init_smb2_rsp_hdr is called for smb1 negotiate request since\nneed_neg is set to false. This patch ignore smb1 packets after ->need_neg\nis set to false.\n\n## Affected\n\n- `linux_kernel >= 5.15.0, < 5.15.145`\n- `linux_kernel >= 5.16.0, < 6.1.53`\n- `linux_kernel >= 6.2.0, < 6.4.16`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.4.16`","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}