{"id":"CVE-2023-32249","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: not allow guest user on multichannel\n\nThis patch return STATUS_NOT_SUPPORTED if binding session is guest.","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: not allow guest user on multichannel\n\nThis patch return STATUS_NOT_SUPPORTED if binding session is guest.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.15, < 5.15.112","linux_kernel >= 5.16, < 6.1.28","linux_kernel >= 6.2, < 6.2.15","linux_kernel >= 6.3, < 6.3.2"],"patched":["linux_kernel 6.3.2"],"published":"2025-08-16","updated":"2026-08-15","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-32249","references":[{"url":"https://git.kernel.org/stable/c/088131b7b01099720a528a72005ff17868705d40","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1f0490586544455e5be698be2e6c30077b4ec461","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3353ab2df5f68dab7da8d5ebb427a2d265a1f2b2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4a98e859c4673013385a54084e0cd865695ca072","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ed76d3a8910be06cd4e4ba63bf6075bf903945a1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00346,"epssPercentile":0.25428,"ingestedAt":"2026-08-15T13:26:45.241Z","slug":"CVE-2023-32249","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: not allow guest user on multichannel\n\nThis patch return STATUS_NOT_SUPPORTED if binding session is guest.\n\n## Affected\n\n- `linux_kernel >= 5.15, < 5.15.112`\n- `linux_kernel >= 5.16, < 6.1.28`\n- `linux_kernel >= 6.2, < 6.2.15`\n- `linux_kernel >= 6.3, < 6.3.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.3.2`","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}