[CLSA-2026:1785410023] unbound: Fix of CVE-2026-50252
Type:
security
Severity:
Critical
Release date:
2026-07-30 11:13:53 UTC
Description:
- CVE-2026-50252: DNS cache poisoning via per-thread source port partitioning; with 'so-reuseport: yes' and multiple threads the outgoing source port revealed the worker thread, lowering effective port entropy
CVEs fixed:
Updated packages:
  • unbound-1.6.6-5.el7_8.tuxcare.els7.x86_64.rpm
    sha:ea127ddba9d2f413d02d4b4892281d6aa20855edf9550002fb1dd471f04389d4
  • unbound-devel-1.6.6-5.el7_8.tuxcare.els7.i686.rpm
    sha:c37bc32ca7b2f554d2105b083b20d83aed7e2e35365c7d17e76d01d4d4dfb453
  • unbound-devel-1.6.6-5.el7_8.tuxcare.els7.x86_64.rpm
    sha:981cb6a2cadabdab31c65cf07fda83b5c79271eaa7281c070b1d1f086752eb4d
  • unbound-libs-1.6.6-5.el7_8.tuxcare.els7.i686.rpm
    sha:abafd35af4e473a7ee0c657aad5e0a7a27ee3b51665714f79ccfe08218b02296
  • unbound-libs-1.6.6-5.el7_8.tuxcare.els7.x86_64.rpm
    sha:0190bdaee339060533c191ce540b74ba0a05bdb0f741356c827efeecb3f1378c
  • unbound-python-1.6.6-5.el7_8.tuxcare.els7.x86_64.rpm
    sha:3b5b118b0d6640de2585a340e0e97e80e9935ca12d250b5248b20b60b96035f2
Notes:
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