{"id":"CVE-2026-98089","state":"PUBLISHED","title":"bonding: alb: fix uninitialized transport header access in alb_determine_nd()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: alb: fix uninitialized transport header access in alb_determine_nd()\n\nalb_determine_nd() uses icmp6_hdr(skb) to inspect ICMPv6 headers.\nHowever, in xmit paths (e.g. packets sent via AF_PACKET / raw sockets\nor forwarded packets), skb->transport_header is not guaranteed to be\ninitialized. While pskb_network_may_pull() ensures the packet data is\nlinear starting from the network header, it does not set or adjust the\ntransport header offset.\n\nDereferencing icmp6_hdr(skb) can therefore access out-of-bounds memory.\n\nFetch the icmp6hdr directly after ipv6hdr following pskb_network_may_pull(),\nand reload ipv6hdr in case pskb_may_pull() reallocated skb->head.\nAlso remove the unused bond argument from alb_determine_nd().","publishedAt":"2026-09-25T10:24:22.877Z","updatedAt":"2026-10-19T09:13:41.394Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"862c8eb6947689c44fe11353755576a3672563a5","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"e39cf90bd856443542b97933289749fca07476bf","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"27314f96d29b54e815e7a9b84c3273f1895e68e2","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"3b178894931a268c09126a5b53630f343e10e296","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"70f3995830d3f1e79faa14eb0605914f778feca9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_alb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_alb.c"]}],"references":["https://git.kernel.org/stable/c/862c8eb6947689c44fe11353755576a3672563a5","https://git.kernel.org/stable/c/7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99","https://git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bf","https://git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2","https://git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296","https://git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98089.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98089","state":"PUBLISHED","datePublished":"2026-09-25T10:24:22.877Z","dateUpdated":"2026-10-19T09:13:41.394Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:19:56.075Z"},"containers":{"cna":{"title":"bonding: alb: fix uninitialized transport header access in alb_determine_nd()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: alb: fix uninitialized transport header access in alb_determine_nd()\n\nalb_determine_nd() uses icmp6_hdr(skb) to inspect ICMPv6 headers.\nHowever, in xmit paths (e.g. packets sent via AF_PACKET / raw sockets\nor forwarded packets), skb->transport_header is not guaranteed to be\ninitialized. While pskb_network_may_pull() ensures the packet data is\nlinear starting from the network header, it does not set or adjust the\ntransport header offset.\n\nDereferencing icmp6_hdr(skb) can therefore access out-of-bounds memory.\n\nFetch the icmp6hdr directly after ipv6hdr following pskb_network_may_pull(),\nand reload ipv6hdr in case pskb_may_pull() reallocated skb->head.\nAlso remove the unused bond argument from alb_determine_nd()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"862c8eb6947689c44fe11353755576a3672563a5","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"e39cf90bd856443542b97933289749fca07476bf","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"27314f96d29b54e815e7a9b84c3273f1895e68e2","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"3b178894931a268c09126a5b53630f343e10e296","versionType":"git"},{"version":"0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549","status":"affected","lessThan":"70f3995830d3f1e79faa14eb0605914f778feca9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_alb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_alb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/862c8eb6947689c44fe11353755576a3672563a5"},{"url":"https://git.kernel.org/stable/c/7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99"},{"url":"https://git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bf"},{"url":"https://git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2"},{"url":"https://git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296"},{"url":"https://git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:13:41.394Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}