{"id":"CVE-2026-88842","state":"PUBLISHED","title":"Busybox: busybox: dpkg stale field_start pointer causes out-of-bounds read and status file corruption","description":"A flaw was found in BusyBox dpkg. The write_status_file() function does not reset a field cursor between package stanzas. When two packages are removed in a single invocation and the first stanza is larger than the second, the second package stanza can be dropped from the status file, causing limited data corruption.","publishedAt":"2026-10-14T10:02:05.270Z","updatedAt":"2026-10-15T19:33:22.460Z","severity":{"score":3.3,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","source":"redhat"},"assigner":"redhat","products":["Red Hat Red Hat Hardened Images"],"affected":[{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"busybox-main","defaultStatus":"affected","versions":[{"version":"1.37.0-9.4.hum1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"]}],"references":["https://access.redhat.com/errata/RHSA-2026:81391","https://access.redhat.com/security/cve/CVE-2026-88842","https://bugzilla.redhat.com/show_bug.cgi?id=2531355"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/88xxx/CVE-2026-88842.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-88842","state":"PUBLISHED","datePublished":"2026-10-14T10:02:05.270Z","dateUpdated":"2026-10-15T19:33:22.460Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-09-10T09:52:23.527Z"},"containers":{"cna":{"title":"Busybox: busybox: dpkg stale field_start pointer causes out-of-bounds read and status file corruption","descriptions":[{"lang":"en","value":"A flaw was found in BusyBox dpkg. The write_status_file() function does not reset a field cursor between package stanzas. When two packages are removed in a single invocation and the first stanza is larger than the second, the second package stanza can be dropped from the status file, causing limited data corruption."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"busybox-main","defaultStatus":"affected","versions":[{"version":"1.37.0-9.4.hum1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:81391","name":"RHSA-2026:81391","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-88842","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531355","name":"RHBZ#2531355","tags":["issue-tracking","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"value":"Low","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","description":"Out-of-bounds Read","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-10-15T19:33:22.460Z"},"datePublic":"2026-10-14T08:45:24.684Z","x_redhatCweChain":"CWE-125: Out-of-bounds Read","workarounds":[{"lang":"en","value":"Do not use BusyBox dpkg for package management on systems where package integrity is critical. Remove packages one at a time if BusyBox dpkg must be used. Upstream should reset field_start at the beginning of each stanza iteration in write_status_file()."}],"timeline":[{"lang":"en","time":"2026-09-07T07:10:06.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-10-14T08:45:24.684Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T10:52:03.773503Z","id":"CVE-2026-88842","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":"2026-10-14T10:52:14.893Z"}}]}}}