Source: libarchive Version: 3.8.5-1 Severity: important Tags: security upstream Forwarded: https://github.com/libarchive/libarchive/pull/2877 X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for libarchive. CVE-2026-4111[0]: | A flaw was identified in the RAR5 archive decompression logic of the | libarchive library, specifically within the archive_read_data() | processing path. When a specially crafted RAR5 archive is processed, | the decompression routine may enter a state where internal logic | prevents forward progress. This condition results in an infinite | loop that continuously consumes CPU resources. Because the archive | passes checksum validation and appears structurally valid, affected | applications cannot detect the issue before processing. This can | allow attackers to cause persistent denial-of-service conditions in | services that automatically process archives. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-4111 https://www.cve.org/CVERecord?id=CVE-2026-4111 [1] https://github.com/libarchive/libarchive/pull/2877 [2] https://github.com/libarchive/libarchive/commit/7273d04803a1e5a482f26d8d0fbaf2b204a72168 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
