{"id":"CVE-2026-99142","aliases":[],"title":"tracing: Check operator stack capacity before pushing","titleSource":"Linux","descriptionSource":"Linux","products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"39f7c41c908bc82947ce47cdd021520ff486c53f","status":"affected","lessThan":"a866a8a753922cdf7710b8eb3f686dc0efc06505","versionType":"git"},{"version":"39f7c41c908bc82947ce47cdd021520ff486c53f","status":"affected","lessThan":"75e894f92417390f0ef44fd350f2d3634c784876","versionType":"git"},{"version":"39f7c41c908bc82947ce47cdd021520ff486c53f","status":"affected","lessThan":"c47a7b11bcb3d45e29723afcf6336866476b1d08","versionType":"git"}],"defaultStatus":"unaffected","source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99142"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99142"}],"remediation":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Check operator stack capacity before pushing\n\npredicate_parse() uses the first operator stack entry before processing\nany opening parentheses. A push then increments top before writing.\nThe existing check still permits that write when top already points to\nthe last allocated entry, which can access beyond the operator stack.\n\nReject the push when top reaches the last allocated entry.","severity":"unknown","score":null,"published":"2026-10-28T10:34:53.839Z","modified":"2026-10-28T10:34:53.839Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://git.kernel.org/stable/c/a866a8a753922cdf7710b8eb3f686dc0efc06505","https://git.kernel.org/stable/c/75e894f92417390f0ef44fd350f2d3634c784876","https://git.kernel.org/stable/c/c47a7b11bcb3d45e29723afcf6336866476b1d08"],"sources":[{"name":"CVE","id":"CVE-2026-99142","modified":"2026-10-28T10:34:53.839Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99142"}],"assessments":[],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T21:35:36.012Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}