{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52915","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.367Z","datePublished":"2026-06-24T07:14:12.569Z","dateUpdated":"2026-06-28T06:36:33.329Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:36:33.329Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ip6t_hbh: reject oversized option lists\n\nstruct ip6t_opts stores at most IP6T_OPTS_OPTSNR option descriptors,\nbut hbh_mt6_check() does not reject larger optsnr values supplied from\nuserspace.\n\nValidate optsnr in the rule setup path so only match data that fits the\nfixed-size opts array can be installed. This follows the existing xtables\npattern of rejecting invalid user-provided counts in checkentry() and\nkeeps the packet matching path unchanged.\n\n`struct ip6t_opts` has a fixed `opts[IP6T_OPTS_OPTSNR]` array,\nwhere `IP6T_OPTS_OPTSNR` is 16, then off-by-one array access is possible:\n\n[  137.924693][ T8692] UBSAN: array-index-out-of-bounds in ../net/ipv6/netfilter/ip6t_hbh.c:110:29\n[  137.926167][ T8692] index 16 is out of range for type '__u16 [16]'"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv6/netfilter/ip6t_hbh.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2d523ba48d4ecc46acfb6aba548292cfcce1ac02","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"588933f1a2ca5ff99274f8c9f25dc3a25d0191c3","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"784aadea7a108c9f90985683caa87fb0198c6a39","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"41ec2e242f1702e8370ddfe14d22b7a766021c3e","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"db0250470f023f159094052c0bd5ab026a88ae93","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"57b0ac5e1b46f1f0338dff392ef2092e2871b412","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"6feb43c0995ab3a9c826707eb46541a1696fe4f7","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"4322dcde6b4173c2d8e8e6118ed290794263bcc8","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv6/netfilter/ip6t_hbh.c"],"versions":[{"version":"2.6.12","status":"affected"},{"version":"0","lessThan":"2.6.12","status":"unaffected","versionType":"semver"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.142","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.92","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.34","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.11","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2d523ba48d4ecc46acfb6aba548292cfcce1ac02"},{"url":"https://git.kernel.org/stable/c/588933f1a2ca5ff99274f8c9f25dc3a25d0191c3"},{"url":"https://git.kernel.org/stable/c/784aadea7a108c9f90985683caa87fb0198c6a39"},{"url":"https://git.kernel.org/stable/c/41ec2e242f1702e8370ddfe14d22b7a766021c3e"},{"url":"https://git.kernel.org/stable/c/db0250470f023f159094052c0bd5ab026a88ae93"},{"url":"https://git.kernel.org/stable/c/57b0ac5e1b46f1f0338dff392ef2092e2871b412"},{"url":"https://git.kernel.org/stable/c/6feb43c0995ab3a9c826707eb46541a1696fe4f7"},{"url":"https://git.kernel.org/stable/c/4322dcde6b4173c2d8e8e6118ed290794263bcc8"}],"title":"netfilter: ip6t_hbh: reject oversized option lists","x_generator":{"engine":"bippy-1.2.0"}}}}