{"id":"CVE-2025-38571","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix client side handling of tls alerts\n\nA security exploit was discovered in NFS over TLS in tls_alert_recv\ndue to its assumption that there is valid data in th…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix client side handling of tls alerts\n\nA security exploit was discovered in NFS over TLS in tls_alert_recv\ndue to its assumption that there is valid data in th…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.5, < 6.6.102","linux_kernel >= 6.7, < 6.12.42","linux_kernel >= 6.13, < 6.15.10","linux_kernel >= 6.16, < 6.16.1"],"patched":["linux_kernel 6.16.1"],"published":"2025-08-19","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:18:45.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-38571","references":[{"url":"https://git.kernel.org/stable/c/3ee397eaaca4fa04db21bb98c8f1d0c6cc525368","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3feada5baf4dc96e151ff2ca54630e1d274e5458","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a55b3d15331859d9fdd261cfa6d34ca2aeb0fb95","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c36b2fbd60e8f9c6f975522130998608880c93be","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc5d59081fa26506d02de2127ab822f40d88bc5a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00346,"epssPercentile":0.2799,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-15T21:51:48.078418Z"},"ingestedAt":"2026-10-15T22:48:25.514Z","slug":"CVE-2025-38571","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix client side handling of tls alerts\n\nA security exploit was discovered in NFS over TLS in tls_alert_recv\ndue to its assumption that there is valid data in the msghdr's\niterator's kvec.\n\nInstead, this patch proposes the rework how control messages are\nsetup and used by sock_recvmsg().\n\nIf no control message structure is setup, kTLS layer will read and\nprocess TLS data record types. As soon as it encounters a TLS control\nmessage, it would return an error. At that point, NFS can setup a kvec\nbacked control buffer and read in the control message such as a TLS\nalert. Scott found that a msg iterator can advance the kvec pointer\nas a part of the copy process thus we need to revert the iterator\nbefore calling into the tls_alert_recv.\n\n## Affected\n\n- `linux_kernel >= 6.5, < 6.6.102`\n- `linux_kernel >= 6.7, < 6.12.42`\n- `linux_kernel >= 6.13, < 6.15.10`\n- `linux_kernel >= 6.16, < 6.16.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.16.1`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}