{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"feb5c87c8514444ba891b75a5a3eae57c64edaf8","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"384628d6cdde0fcd76868606fad3ad8293100afb","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"1fafc4d9b411645eb34de43362b966dc8fb3e263","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"cff8281bacd2866767e6194c3079d33b6c5a74f4","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"edf6babb9edd2d3e19229ade339081f439d4f478","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"ea6a188ee805e841a0e242f14d15953e0dfa74bb","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"571e1f10b5996ba3e4dc63ea77de4aa309c384ce","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"},{"lessThan":"26aff38fefb1d6cd87e22525f41cc8f1aa61b24f","status":"affected","version":"858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"4.11"},{"lessThan":"4.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-72068","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: Use u64 multiplication in update_rlimit_cpu()\n\nupdate_rlimit_cpu() converts the RLIMIT_CPU value to nanoseconds with\n\n        u64 nsecs = rlim_new * NSEC_PER_SEC;\n\nOn 32-bit kernels both rlim_new (unsigned long) and NSEC_PER_SEC\n(1000000000L) are 32-bit, so the multiplication is performed in unsigned\nlong and truncated for rlim_new > 4 seconds before being widened to u64.\n\nThe same file already casts to u64 for the matching computation in\ncheck_process_timers():\n\n        u64 softns = (u64)soft * NSEC_PER_SEC;\n\nAs a result, the truncated value is installed into the CPUCLOCK_PROF\nexpiry cache (nextevt), causing the process CPU timer to be programmed\nto fire prematurely for any RLIMIT_CPU soft limit >= 5 seconds. The\nactual SIGXCPU/SIGKILL decision in check_process_timers() already casts\nto u64 and is therefore correct, so limit enforcement is not broken;\nonly the expiry-cache programming is wrong. Apply the same cast here so\nboth paths convert rlim_cur identically.\n\n64-bit kernels are unaffected.","epss":{"date":"2026-11-06","percentile":0.12549,"score":0.0022},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793985576033,"publishedAt":1786773141007,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/feb5c87c8514444ba891b75a5a3eae57c64edaf8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/384628d6cdde0fcd76868606fad3ad8293100afb"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1fafc4d9b411645eb34de43362b966dc8fb3e263"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/cff8281bacd2866767e6194c3079d33b6c5a74f4"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/edf6babb9edd2d3e19229ade339081f439d4f478"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ea6a188ee805e841a0e242f14d15953e0dfa74bb"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/571e1f10b5996ba3e4dc63ea77de4aa309c384ce"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/26aff38fefb1d6cd87e22525f41cc8f1aa61b24f"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/1fafc4d9b411645eb34de43362b966dc8fb3e263"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/26aff38fefb1d6cd87e22525f41cc8f1aa61b24f"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/384628d6cdde0fcd76868606fad3ad8293100afb"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/571e1f10b5996ba3e4dc63ea77de4aa309c384ce"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/cff8281bacd2866767e6194c3079d33b6c5a74f4"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/ea6a188ee805e841a0e242f14d15953e0dfa74bb"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/edf6babb9edd2d3e19229ade339081f439d4f478"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/feb5c87c8514444ba891b75a5a3eae57c64edaf8"}],"remediation":[],"revision":"36c06d9371d37212e6b908c133c8af3275b9a9898a3128631f990d43585bb5b4","sources":[{"modifiedAt":1793984119267,"name":"CNA: Linux","retrievedAt":1793986031322,"url":"https://www.cve.org/CVERecord?id=CVE-2026-72068"},{"modifiedAt":1793985576033,"name":"NVD","retrievedAt":1793989682030,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72068"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793986034852,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-72068"}],"ssvc":{"assessedAt":1793983864940,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"posix-cpu-timers: Use u64 multiplication in update_rlimit_cpu()","updatedAt":1793989682030}