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kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()

🗓️ 17 Aug 2026 18:35:12Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Linux kernel IPv6 ICMP error handling in ip6_err_gen_icmpv6_unreach() leaks skb2->cb[] causing OOB access and DoS or info disclosure.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2ppc64lekpatch-patch-5_14_0-284_117_11-19.el9_2kpatch-patch-5_14_0-284_117_1-1-19.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2x86_64kpatch-patch-5_14_0-284_117_11-19.el9_2kpatch-patch-5_14_0-284_117_1-1-19.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2ppc64lekpatch-patch-5_14_0-284_117_1-debuginfo1-19.el9_2kpatch-patch-5_14_0-284_117_1-debuginfo-1-19.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2x86_64kpatch-patch-5_14_0-284_117_1-debuginfo1-19.el9_2kpatch-patch-5_14_0-284_117_1-debuginfo-1-19.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2ppc64lekpatch-patch-5_14_0-284_117_1-debugsource1-19.el9_2kpatch-patch-5_14_0-284_117_1-debugsource-1-19.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2x86_64kpatch-patch-5_14_0-284_117_1-debugsource1-19.el9_2kpatch-patch-5_14_0-284_117_1-debugsource-1-19.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2ppc64lekpatch-patch-5_14_0-284_134_11-13.el9_2kpatch-patch-5_14_0-284_134_1-1-13.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2x86_64kpatch-patch-5_14_0-284_134_11-13.el9_2kpatch-patch-5_14_0-284_134_1-1-13.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2ppc64lekpatch-patch-5_14_0-284_134_1-debuginfo1-13.el9_2kpatch-patch-5_14_0-284_134_1-debuginfo-1-13.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2x86_64kpatch-patch-5_14_0-284_134_1-debuginfo1-13.el9_2kpatch-patch-5_14_0-284_134_1-debuginfo-1-13.el9_2.x86_64.rpm
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21 Aug 2026 12:46Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.8
EPSS0.00255
4