{"id":"CVE-2025-37954","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Avoid race in open_cached_dir with lease breaks\n\nA pre-existing valid cfid returned from find_or_create_cached_dir might\nrace with a lease break, meaning o…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Avoid race in open_cached_dir with lease breaks\n\nA pre-existing valid cfid returned from find_or_create_cached_dir might\nrace with a lease break, meaning o…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 6.6.91","linux_kernel >= 6.7, < 6.12.29","linux_kernel >= 6.13, < 6.14.7","linux_kernel = 6.15"],"patched":["linux_kernel 6.14.7"],"published":"2025-05-20","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:18:22.667","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-37954","references":[{"url":"https://git.kernel.org/stable/c/2407265dc32bc8cc45b62a612c2a214ba9038e8b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3ca02e63edccb78ef3659bebc68579c7224a6ca2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/571dcf3d27b24800c171aea7b5e04ff06d10e2e9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00368,"epssPercentile":0.30532,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-15T21:46:24.590387Z"},"ingestedAt":"2026-10-15T22:48:25.486Z","slug":"CVE-2025-37954","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Avoid race in open_cached_dir with lease breaks\n\nA pre-existing valid cfid returned from find_or_create_cached_dir might\nrace with a lease break, meaning open_cached_dir doesn't consider it\nvalid, and thinks it's newly-constructed. This leaks a dentry reference\nif the allocation occurs before the queued lease break work runs.\n\nAvoid the race by extending holding the cfid_list_lock across\nfind_or_create_cached_dir and when the result is checked.\n\n## Affected\n\n- `linux_kernel < 6.6.91`\n- `linux_kernel >= 6.7, < 6.12.29`\n- `linux_kernel >= 6.13, < 6.14.7`\n- `linux_kernel = 6.15`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.14.7`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}