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7.5 High

CVE-2026-19630 In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with…

Description

In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

Affected products and versions

Product Affected versions Fixed in
BIND 9 9.21 9.21.0 → 9.21.26 No fix stated
BIND 9 9.20 9.20.0 → 9.20.29 No fix stated
BIND 9 9.11 9.11.0 → 9.18.50 No fix stated

References

Timeline

  1. Published
  2. Last modified

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