{"id":"CVE-2026-46168","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix scheduling with atomic in timestamp sockopt\n\nUsing lock_sock_fast() (atomic context) around sock_set_timestamp()\nand sock_set_timestamping() is unsafe, as bo…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix scheduling with atomic in timestamp sockopt\n\nUsing lock_sock_fast() (atomic context) around sock_set_timestamp()\nand sock_set_timestamping() is unsafe, as bo…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.14, < 5.15.209","linux_kernel >= 5.16, < 6.1.175","linux_kernel >= 6.2, < 6.6.140","linux_kernel >= 6.7, < 6.12.88","linux_kernel >= 6.13, < 6.18.30","linux_kernel >= 6.19, < 7.0.7","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.7"],"published":"2026-05-28","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:47.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46168","references":[{"url":"https://git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e792cfb6aeaf65612cdf8e3ac431d65e66283654","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ebeb70e29e37cfce899309cc2665a3bfe960ed94","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00162,"epssPercentile":0.05033,"ingestedAt":"2026-10-15T03:30:12.893Z","slug":"CVE-2026-46168","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix scheduling with atomic in timestamp sockopt\n\nUsing lock_sock_fast() (atomic context) around sock_set_timestamp()\nand sock_set_timestamping() is unsafe, as both helpers can sleep.\n\nReplace lock_sock_fast() with sleepable lock_sock()/release_sock()\nto avoid scheduling while atomic panic.\n\n## Affected\n\n- `linux_kernel >= 5.14, < 5.15.209`\n- `linux_kernel >= 5.16, < 6.1.175`\n- `linux_kernel >= 6.2, < 6.6.140`\n- `linux_kernel >= 6.7, < 6.12.88`\n- `linux_kernel >= 6.13, < 6.18.30`\n- `linux_kernel >= 6.19, < 7.0.7`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.7`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}