CVE-2026-5946

01/תיאור (מקור, אנגלית)

Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

02/מוצרים מושפעים

isc: bind

03/קישורים10

• kb.isc.org/docs/cve-2026-5946 Vendor Advisory
• downloads.isc.org/isc/bind9/9.18.49 Patch
• downloads.isc.org/isc/bind9/9.20.23 Patch
• downloads.isc.org/isc/bind9/9.21.22 Patch
• access.redhat.com/errata/RHSA-2026:20334
• access.redhat.com/errata/RHSA-2026:23360
• access.redhat.com/errata/RHSA-2026:24338
• access.redhat.com/errata/RHSA-2026:24339
• access.redhat.com/errata/RHSA-2026:24367
• access.redhat.com/errata/RHSA-2026:24368