A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.
https://access.redhat.com/errata/RHSA-2026:74674
https://access.redhat.com/errata/RHSA-2026:74463
https://access.redhat.com/errata/RHSA-2026:74462
https://access.redhat.com/errata/RHSA-2026:74461
https://access.redhat.com/errata/RHSA-2026:74460
https://access.redhat.com/errata/RHSA-2026:74459
https://access.redhat.com/errata/RHSA-2026:74458
https://access.redhat.com/errata/RHSA-2026:73962
https://access.redhat.com/errata/RHSA-2026:73961
https://access.redhat.com/errata/RHSA-2026:73960
https://access.redhat.com/errata/RHSA-2026:73959
https://access.redhat.com/errata/RHSA-2026:73909
https://access.redhat.com/errata/RHSA-2026:72502
https://access.redhat.com/errata/RHSA-2026:72476
https://access.redhat.com/errata/RHSA-2026:72475
https://access.redhat.com/errata/RHSA-2026:72470
https://access.redhat.com/errata/RHSA-2026:72399
https://access.redhat.com/errata/RHSA-2026:72395
https://access.redhat.com/errata/RHSA-2026:72394
https://access.redhat.com/errata/RHSA-2026:70615
https://access.redhat.com/errata/RHSA-2026:70586
https://access.redhat.com/errata/RHSA-2026:67935
https://access.redhat.com/errata/RHSA-2026:67857
https://access.redhat.com/errata/RHSA-2026:65851
https://access.redhat.com/errata/RHSA-2026:65839
https://access.redhat.com/errata/RHSA-2026:63100
https://access.redhat.com/errata/RHSA-2026:63044
https://access.redhat.com/errata/RHSA-2026:63041
https://access.redhat.com/errata/RHSA-2026:62409
https://access.redhat.com/errata/RHSA-2026:61783
https://access.redhat.com/errata/RHSA-2026:58981
https://access.redhat.com/errata/RHSA-2026:58574
https://access.redhat.com/errata/RHSA-2026:58573
https://access.redhat.com/errata/RHSA-2026:58558
https://access.redhat.com/errata/RHSA-2026:56954
https://access.redhat.com/errata/RHSA-2026:54769
https://access.redhat.com/errata/RHSA-2026:54760
https://access.redhat.com/errata/RHSA-2026:54387
https://access.redhat.com/errata/RHSA-2026:52675