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5.3 Medium

CVE-2026-75029 In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an…

Description

In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Affected products and versions

Product Affected versions Fixed in
BIND 9 9.21 9.21.0 → 9.21.25 No fix stated
BIND 9 9.20 9.20.0 → 9.20.27 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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