{"schemaVersion":3,"id":"CVE-2026-40469","aliases":["UBUNTU-CVE-2026-40469","DEBIAN-CVE-2026-40469"],"status":"published","duplicateOf":null,"title":null,"description":"Integer overflow vulnerability has been found in \"builtin.c\" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. 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Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"debian","product":"gawk","name":"gawk","label":"gawk","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/gawk","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"gawk","name":"gawk","label":"gawk","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/gawk","purlType":"deb","versions":[{"text":"< 1:4.0.1+dfsg-2.1ubuntu2+esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 1:4.1.3+dfsg-0.1ubuntu0.1~esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 1:4.1.4+dfsg-1ubuntu0.1~esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 1:5.0.1+dfsg-1ubuntu0.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:5.1.0-1ubuntu0.2","noFixRecorded":false,"fixedIn":null},{"text":"< 1:5.2.1-2ubuntu0.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:5.3.2-1ubuntu1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:4.0.1+dfsg-2.1ubuntu2+esm2 | < 1:4.1.3+dfsg-0.1ubuntu0.1~esm2 | < 1:4.1.4+dfsg-1ubuntu0.1~esm2 | < 1:5.0.1+dfsg-1ubuntu0.1+esm1 | < 1:5.1.0-1ubuntu0.2 | < 1:5.2.1-2ubuntu0.1 | < 1:5.3.2-1ubuntu1.1","eol":null,"hubHref":null},{"vendor":"fossies","product":"gawk","name":"gawk","label":"gawk","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 5.4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.4.0","eol":null,"hubHref":"/vendor/fossies/gawk"},{"vendor":"gnu","product":"gawk","name":"gawk","label":"gawk","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 5.4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.4.0","eol":null,"hubHref":"/vendor/gnu/gawk"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b","label":"cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b","hostname":"cgit.git.savannah.gnu.org","tags":["Patch"]},{"url":"https://cert.pl/en/posts/2026/07/CVE-2026-40467","label":"cert.pl/en/posts/2026/07/CVE-2026-40467","hostname":"cert.pl","tags":["Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-40469","label":"ubuntu.com/security/CVE-2026-40469","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-40469","label":"www.cve.org/CVERecord?id=CVE-2026-40469","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8588-1","label":"ubuntu.com/security/notices/USN-8588-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-40469","label":"security-tracker.debian.org/tracker/CVE-2026-40469","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0427","RHSA-2026:40041","RHSA-2026:49661","USN-8588-1"],"duplicates":[],"related":["USN-8588-1"]},"timeline":[{"kind":"published","date":"2026-07-13T12:07:55.692Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-13T13:01:07.290Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T03:59:07.167Z","stale":false,"partial":false}}