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USN-8951-1: c-ares vulnerabilities

🗓️ 21 Oct 2026 18:20:42Reported by UbuntuType 
ubuntu
 ubuntu🔗 ubuntu.com👁 5 Views

Remote DoS or code execution in c-ares via incorrect parsing of DNS responses.

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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu16.04alllibc-ares-dev1.10.0-3ubuntu0.2+esm4libc-ares-dev_1.10.0-3ubuntu0.2+esm4_all.deb
Ubuntu18.04alllibc-ares-dev1.14.0-1ubuntu0.2+esm3libc-ares-dev_1.14.0-1ubuntu0.2+esm3_all.deb
Ubuntu20.04alllibc-ares-dev1.15.0-1ubuntu0.5+esm1libc-ares-dev_1.15.0-1ubuntu0.5+esm1_all.deb
Ubuntu22.04amd64libc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_amd64.deb
Ubuntu22.04arm64libc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_arm64.deb
Ubuntu22.04armhflibc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_armhf.deb
Ubuntu22.04i386libc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_i386.deb
Ubuntu22.04ppc64ellibc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_ppc64el.deb
Ubuntu22.04riscv64libc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_riscv64.deb
Ubuntu22.04s390xlibc-ares-dev1.18.1-1ubuntu0.22.04.4libc-ares-dev_1.18.1-1ubuntu0.22.04.4_s390x.deb
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21 Oct 2026 18:20Current
7.6High risk
Vulners AI Score7.6
CVSS 3.17.5 - 8.6
EPSS0.01222
SSVC
c-aresDNSdenial of servicecode executionremote attack
5