{"id":"CVE-2026-42250","state":"PUBLISHED","title":"Off-by-One Leading to Out-of-Bounds Write in bzip2","description":"bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service).\n\nThis issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67","publishedAt":"2026-05-28T13:15:19.660Z","updatedAt":"2026-06-05T07:47:33.397Z","severity":{"score":4.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","source":"CERT-PL"},"assigner":"CERT-PL","products":["bzip2 bzip2"],"affected":[{"vendor":"bzip2","product":"bzip2","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.0.8","versionType":"semver"},{"version":"35d122a3df8b0cc4082a4d89fdc6ee99f375fe67","status":"unaffected","versionType":"custom"}],"repo":"https://gitlab.com/federicomenaquintero/bzip2"}],"references":["https://cert.pl/en/posts/2026/05/CVE-2026-42250/","https://sourceware.org/bzip2/","https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/","https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/42xxx/CVE-2026-42250.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42250","state":"PUBLISHED","datePublished":"2026-05-28T13:15:19.660Z","dateUpdated":"2026-06-05T07:47:33.397Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2026-04-25T11:31:56.229Z"},"containers":{"cna":{"title":"Off-by-One Leading to Out-of-Bounds Write in bzip2","descriptions":[{"lang":"en","value":"bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service).\n\nThis issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67"}],"affected":[{"vendor":"bzip2","product":"bzip2","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.0.8","versionType":"semver"},{"version":"35d122a3df8b0cc4082a4d89fdc6ee99f375fe67","status":"unaffected","versionType":"custom"}],"repo":"https://gitlab.com/federicomenaquintero/bzip2"}],"references":[{"url":"https://cert.pl/en/posts/2026/05/CVE-2026-42250/","tags":["third-party-advisory"]},{"url":"https://sourceware.org/bzip2/","tags":["product"]},{"url":"https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/","tags":["vendor-advisory"]},{"url":"https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67","tags":["patch"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2026-06-05T07:47:33.397Z"},"credits":[{"lang":"en","type":"finder","value":"Michał Majchrowicz (AFINE Team)"},{"lang":"en","type":"finder","value":"Marcin Wyczechowski (AFINE Team)"}],"source":{"discovery":"EXTERNAL"},"tags":["x_open-source"],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-28T14:22:49.264231Z","id":"CVE-2026-42250","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-28T14:23:00.571Z"}}]}}}