{"id":"CVE-2026-68322","title":"rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled","summary":"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…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 7809344be3f0c1bbfdfdde1cefafeec14bf52d51","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 438dec9b0a06bd1f8db8c58539c655e735e17367","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < b61c9eb5931bb7389bc104faacd8c17d910da65d","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 8e48d7ab1e01936a172ff31531904b003895fd8c","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < a8302e758050e6a922765aee8d220a4fd350f52d","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < f6787fdffcae5490c779f0f3f33b11597525d1ae","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 00d5707217b5972554898ff734ae7b71bce704e6","Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 9c805e592a29be9e4e61ff1bd567da04aa8fd6f9","Linux 4.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:47:08.773587Z"},"published":"2026-08-10","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:55:13.018Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68322","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"}],"tags":["cve.org"],"epss":0.00216,"epssPercentile":0.12151,"ingestedAt":"2026-11-06T18:00:12.612Z","slug":"CVE-2026-68322","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 7809344be3f0c1bbfdfdde1cefafeec14bf52d51`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 438dec9b0a06bd1f8db8c58539c655e735e17367`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < b61c9eb5931bb7389bc104faacd8c17d910da65d`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 8e48d7ab1e01936a172ff31531904b003895fd8c`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < a8302e758050e6a922765aee8d220a4fd350f52d`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < f6787fdffcae5490c779f0f3f33b11597525d1ae`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 00d5707217b5972554898ff734ae7b71bce704e6`\n- `Linux >= eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 < 9c805e592a29be9e4e61ff1bd567da04aa8fd6f9`\n- `Linux 4.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}