{"id":"CVE-2026-64299","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-64299","generatedAt":"2026-10-28T04:44:40.450Z","title":"In the Linux kernel, the following vulnerability has been resolved: tracing: Prevent out-of-bounds read in glob matching String event fields are not necessarily NUL-terminated, so the filter predicate functions (filter_pred_string(),…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Prevent out-of-bounds read in glob matching\n\nString event fields are not necessarily NUL-terminated, so the filter\npredicate functions (filter_pred_string(), filter_pred_strloc() and\nfilter_pred_strrelloc()) pass the field length to the regex match\ncallbacks, and the length-aware matchers honour it.\n\nregex_match_glob() was the exception: it ignored the length and called\nglob_match(), which scans the string until it hits a NUL byte. Some\nstring fields are not NUL-terminated. One example is the dynamic char\narray of the xfs_* namespace tracepoints, which is copied without a\ntrailing NUL. For such a field, glob matching reads past the end of\nthe event field, causing a KASAN slab-out-of-bounds read in\nglob_match(), reached via regex_match_glob() and filter_match_preds()\nfrom the xfs_lookup tracepoint.\n\nAdd a length-bounded glob_match_len() and use it from regex_match_glob()\nso glob matching always stops at the field boundary. The matching loop\nis factored into a shared helper so glob_match() keeps its behaviour.","published":"2026-07-25T10:17:11.000Z","lastModified":"2026-10-19T21:17:31.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},"cwe":["CWE-125"],"affected":["linux/linux kernel"],"epss":{"score":0.00165,"percentile":0.05626,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/0a6070839b1ef276d5b05bedfb787743e140fb17","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/265f3a690f6c7d69ef7d2ca50b04b4853a211df3","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2dad64a97e1df47f5d9ccb17fa319aa348617226","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/35ae19764eabfe9c29029d3b5713c86e6855acdf","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/56d4c9ab84714eebb285a2fee68aaedf81e3ef15","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e5d5f3bd053a5f14787526c9f0f55ef900d43ac6","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ebb55902856973906c8bb339a3a34824ed4a5086","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ee5b8888d3248618251fb69a2fad92afcb81557e","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64299","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}