{"id":"CVE-2025-40057","state":"PUBLISHED","title":"ptp: Add a upper bound on max_vclocks","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nptp: Add a upper bound on max_vclocks\n\nsyzbot reported WARNING in max_vclocks_store.\n\nThis occurs when the argument max is too large for kcalloc to handle.\n\nExtend the guard to guard against values that are too large for\nkcalloc","publishedAt":"2025-10-28T11:48:30.947Z","updatedAt":"2026-10-30T12:22:43.923Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"73f37068d540eba5f93ba3a0019bf479d35ebd76","status":"affected","lessThan":"5ba2f8fd3db1c695f74f7f5df72eb87d52668a66","versionType":"git"},{"version":"73f37068d540eba5f93ba3a0019bf479d35ebd76","status":"affected","lessThan":"da513f2ad1b1b1cf1880ccc2603ce1f1f818eb2e","versionType":"git"},{"version":"73f37068d540eba5f93ba3a0019bf479d35ebd76","status":"affected","lessThan":"8dd446056336faa2283d62cefc2f576536845edc","versionType":"git"},{"version":"73f37068d540eba5f93ba3a0019bf479d35ebd76","status":"affected","lessThan":"35ce5f163889dbce88eda1df661b357a09bbed87","versionType":"git"},{"version":"73f37068d540eba5f93ba3a0019bf479d35ebd76","status":"affected","lessThan":"e9f35294e18da82162004a2f35976e7031aaf7f9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ptp/ptp_private.h","drivers/ptp/ptp_sysfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.53","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.3","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ptp/ptp_private.h","drivers/ptp/ptp_sysfs.c"]}],"references":["https://git.kernel.org/stable/c/5ba2f8fd3db1c695f74f7f5df72eb87d52668a66","https://git.kernel.org/stable/c/da513f2ad1b1b1cf1880ccc2603ce1f1f818eb2e","https://git.kernel.org/stable/c/8dd446056336faa2283d62cefc2f576536845edc","https://git.kernel.org/stable/c/35ce5f163889dbce88eda1df661b357a09bbed87","https://git.kernel.org/stable/c/e9f35294e18da82162004a2f35976e7031aaf7f9"],"weaknesses":[],"ingestedAt":"2026-10-30T12:40:04.423Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40057.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40057","state":"PUBLISHED","datePublished":"2025-10-28T11:48:30.947Z","dateUpdated":"2026-10-30T12:22:43.923Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.158Z"},"containers":{"cna":{"title":"ptp: Add a upper bound on max_vclocks","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nptp: Add a upper bound on max_vclocks\n\nsyzbot reported WARNING in max_vclocks_store.\n\nThis occurs when the argument max is too large for kcalloc to handle.\n\nExtend the guard to guard against values that are too large 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