{"id":"CVE-2026-68322","state":"PUBLISHED","title":"rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled\n\nWhen booting with the 'ipv6.disable=1' parameter, inet6_addr_lst\nis never initialized because inet6_init() exits before addrconf_init()\nis called to initialize it. An attempt to bind an RDS socket to\nan ipv6 address results in a crash in __ipv6_chk_addr_and_flags()\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nRIP: 0010:__ipv6_chk_addr_and_flags+0x1df/0x7e0\nCall Trace:\n <TASK>\n ipv6_chk_addr+0x3b/0x50\n rds_tcp_laddr_check+0x155/0x3b0 [rds_tcp]\n rds_trans_get_preferred+0x15d/0x2d0 [rds]\n ? trace_hardirqs_on+0x2d/0x110\n rds_bind+0x1433/0x1d60 [rds]\n ? rds_remove_bound+0xd50/0xd50 [rds]\n ? aa_af_perm+0x250/0x250\n ? __might_fault+0xde/0x190\n ? __sys_bind+0x1dc/0x210\n __sys_bind+0x1dc/0x210\n ? __ia32_sys_socketpair+0x100/0x100\n ? restore_fpregs_from_fpstate+0x53/0x100\n __x64_sys_bind+0x73/0xb0\n ? syscall_enter_from_user_mode+0x1c/0x50\n do_syscall_64+0x34/0x80\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\nRIP: 0033:0x7f47f8269ea9\n </TASK>\n\nThe following code reproduces the issue:\n\nstruct sockaddr_in6 addr;\ns = socket(PF_RDS, SOCK_SEQPACKET, 0);\n\nmemset(&addr, 0, sizeof(addr));\ninet_pton(AF_INET6, ADDRESS, &addr.sin6_addr);\naddr.sin6_family = AF_INET6;\naddr.sin6_port = htons(PORT);\n\nbind(s, &addr, sizeof(addr));\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with Syzkaller.","publishedAt":"2026-08-10T12:02:57.499Z","updatedAt":"2026-08-19T16:33:12.816Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"7809344be3f0c1bbfdfdde1cefafeec14bf52d51","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"438dec9b0a06bd1f8db8c58539c655e735e17367","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"b61c9eb5931bb7389bc104faacd8c17d910da65d","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"8e48d7ab1e01936a172ff31531904b003895fd8c","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"a8302e758050e6a922765aee8d220a4fd350f52d","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"f6787fdffcae5490c779f0f3f33b11597525d1ae","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"00d5707217b5972554898ff734ae7b71bce704e6","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"9c805e592a29be9e4e61ff1bd567da04aa8fd6f9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/rds/ib.c","net/rds/ib_cm.c","net/rds/tcp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/rds/ib.c","net/rds/ib_cm.c","net/rds/tcp.c"]}],"references":["https://git.kernel.org/stable/c/7809344be3f0c1bbfdfdde1cefafeec14bf52d51","https://git.kernel.org/stable/c/438dec9b0a06bd1f8db8c58539c655e735e17367","https://git.kernel.org/stable/c/b61c9eb5931bb7389bc104faacd8c17d910da65d","https://git.kernel.org/stable/c/8e48d7ab1e01936a172ff31531904b003895fd8c","https://git.kernel.org/stable/c/a8302e758050e6a922765aee8d220a4fd350f52d","https://git.kernel.org/stable/c/f6787fdffcae5490c779f0f3f33b11597525d1ae","https://git.kernel.org/stable/c/00d5707217b5972554898ff734ae7b71bce704e6","https://git.kernel.org/stable/c/9c805e592a29be9e4e61ff1bd567da04aa8fd6f9"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68322.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68322","state":"PUBLISHED","datePublished":"2026-08-10T12:02:57.499Z","dateUpdated":"2026-08-19T16:33:12.816Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.382Z"},"containers":{"cna":{"title":"rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nrds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled\n\nWhen booting with the 'ipv6.disable=1' parameter, inet6_addr_lst\nis never initialized because inet6_init() exits before addrconf_init()\nis called to initialize it. An attempt to bind an RDS socket to\nan ipv6 address results in a crash in __ipv6_chk_addr_and_flags()\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nRIP: 0010:__ipv6_chk_addr_and_flags+0x1df/0x7e0\nCall Trace:\n <TASK>\n ipv6_chk_addr+0x3b/0x50\n rds_tcp_laddr_check+0x155/0x3b0 [rds_tcp]\n rds_trans_get_preferred+0x15d/0x2d0 [rds]\n ? trace_hardirqs_on+0x2d/0x110\n rds_bind+0x1433/0x1d60 [rds]\n ? rds_remove_bound+0xd50/0xd50 [rds]\n ? aa_af_perm+0x250/0x250\n ? __might_fault+0xde/0x190\n ? __sys_bind+0x1dc/0x210\n __sys_bind+0x1dc/0x210\n ? __ia32_sys_socketpair+0x100/0x100\n ? restore_fpregs_from_fpstate+0x53/0x100\n __x64_sys_bind+0x73/0xb0\n ? syscall_enter_from_user_mode+0x1c/0x50\n do_syscall_64+0x34/0x80\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\nRIP: 0033:0x7f47f8269ea9\n </TASK>\n\nThe following code reproduces the issue:\n\nstruct sockaddr_in6 addr;\ns = socket(PF_RDS, SOCK_SEQPACKET, 0);\n\nmemset(&addr, 0, sizeof(addr));\ninet_pton(AF_INET6, ADDRESS, &addr.sin6_addr);\naddr.sin6_family = AF_INET6;\naddr.sin6_port = htons(PORT);\n\nbind(s, &addr, sizeof(addr));\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with Syzkaller."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"7809344be3f0c1bbfdfdde1cefafeec14bf52d51","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"438dec9b0a06bd1f8db8c58539c655e735e17367","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"b61c9eb5931bb7389bc104faacd8c17d910da65d","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"8e48d7ab1e01936a172ff31531904b003895fd8c","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"a8302e758050e6a922765aee8d220a4fd350f52d","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"f6787fdffcae5490c779f0f3f33b11597525d1ae","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"00d5707217b5972554898ff734ae7b71bce704e6","versionType":"git"},{"version":"eee2fa6ab3225192d6d894c54a6fb02ac9efdff6","status":"affected","lessThan":"9c805e592a29be9e4e61ff1bd567da04aa8fd6f9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/rds/ib.c","net/rds/ib_cm.c","net/rds/tcp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/rds/ib.c","net/rds/ib_cm.c","net/rds/tcp.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7809344be3f0c1bbfdfdde1cefafeec14bf52d51"},{"url":"https://git.kernel.org/stable/c/438dec9b0a06bd1f8db8c58539c655e735e17367"},{"url":"https://git.kernel.org/stable/c/b61c9eb5931bb7389bc104faacd8c17d910da65d"},{"url":"https://git.kernel.org/stable/c/8e48d7ab1e01936a172ff31531904b003895fd8c"},{"url":"https://git.kernel.org/stable/c/a8302e758050e6a922765aee8d220a4fd350f52d"},{"url":"https://git.kernel.org/stable/c/f6787fdffcae5490c779f0f3f33b11597525d1ae"},{"url":"https://git.kernel.org/stable/c/00d5707217b5972554898ff734ae7b71bce704e6"},{"url":"https://git.kernel.org/stable/c/9c805e592a29be9e4e61ff1bd567da04aa8fd6f9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-19T16:33:12.816Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}