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

🗓️ 17 Aug 2026 16:04:51Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

Linux kernel IPv6 ICMP error path mishandles CIPSO option causing OOB memory access and DoS.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10ppc64lekpatch-patch-4_18_0-553_109_11-9.el8_10kpatch-patch-4_18_0-553_109_1-1-9.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10x86_64kpatch-patch-4_18_0-553_109_11-9.el8_10kpatch-patch-4_18_0-553_109_1-1-9.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lekpatch-patch-4_18_0-553_109_1-debuginfo1-9.el8_10kpatch-patch-4_18_0-553_109_1-debuginfo-1-9.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10x86_64kpatch-patch-4_18_0-553_109_1-debuginfo1-9.el8_10kpatch-patch-4_18_0-553_109_1-debuginfo-1-9.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lekpatch-patch-4_18_0-553_109_1-debugsource1-9.el8_10kpatch-patch-4_18_0-553_109_1-debugsource-1-9.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10x86_64kpatch-patch-4_18_0-553_109_1-debugsource1-9.el8_10kpatch-patch-4_18_0-553_109_1-debugsource-1-9.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lekpatch-patch-4_18_0-553_125_11-6.el8_10kpatch-patch-4_18_0-553_125_1-1-6.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10x86_64kpatch-patch-4_18_0-553_125_11-6.el8_10kpatch-patch-4_18_0-553_125_1-1-6.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10ppc64lekpatch-patch-4_18_0-553_125_1-debuginfo1-6.el8_10kpatch-patch-4_18_0-553_125_1-debuginfo-1-6.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10x86_64kpatch-patch-4_18_0-553_125_1-debuginfo1-6.el8_10kpatch-patch-4_18_0-553_125_1-debuginfo-1-6.el8_10.x86_64.rpm
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21 Aug 2026 12:46Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.19.8
EPSS0.00255
2