{"id":"CVE-2026-98384","state":"PUBLISHED","title":"bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common. A timewait\nor request sock handed to bpf_sock_destroy() by the tcp iterator is\nneither, so reading sk->sk_protocol runs past the object:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0\nRead of size 2 at addr ffff8881047d11b4 by task test_progs/428\n\nTainted: [W]=WARN\nCall Trace:\n <TASK>\n dump_stack_lvl+0x91/0xf0\n print_report+0xd1/0x630\n kasan_report+0xf3/0x130\n __asan_report_load2_noabort+0x14/0x30\n bpf_sock_destroy+0xc7/0xe0\n bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7\n bpf_iter_run_prog+0x538/0xde0\n bpf_iter_tcp_seq_show+0x26b/0x4b0\n bpf_seq_read+0x424/0x1210\n vfs_read+0x197/0xe40\n ksys_read+0x119/0x240\n __x64_sys_read+0x72/0xc0\n x64_sys_call+0x647/0x27e0\n do_syscall_64+0xe5/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nOnly check sk_protocol on full socks. tcp_abort() already knows how to\ndeal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it\nnever matched the code.","publishedAt":"2026-10-09T07:34:23.097Z","updatedAt":"2026-10-19T09:18:35.149Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"5b4eb82475ae17d55974235c09e97044829426a8","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"a9651704c6fd64590b5ad4fbe7c3768accf95993","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"91a482a81eabddebf5430cbbdf12027e1a91b767","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"2534a5e5d360c2b10203cfa80f4ab9d021e48f2f","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"01b245ba016d44861690594e10f67e026ce8552f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/filter.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","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":["net/core/filter.c"]}],"references":["https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8","https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993","https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767","https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f","https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98384.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98384","state":"PUBLISHED","datePublished":"2026-10-09T07:34:23.097Z","dateUpdated":"2026-10-19T09:18:35.149Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.345Z"},"containers":{"cna":{"title":"bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common. A timewait\nor request sock handed to bpf_sock_destroy() by the tcp iterator is\nneither, so reading sk->sk_protocol runs past the object:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0\nRead of size 2 at addr ffff8881047d11b4 by task test_progs/428\n\nTainted: [W]=WARN\nCall Trace:\n <TASK>\n dump_stack_lvl+0x91/0xf0\n print_report+0xd1/0x630\n kasan_report+0xf3/0x130\n __asan_report_load2_noabort+0x14/0x30\n bpf_sock_destroy+0xc7/0xe0\n bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7\n bpf_iter_run_prog+0x538/0xde0\n bpf_iter_tcp_seq_show+0x26b/0x4b0\n bpf_seq_read+0x424/0x1210\n vfs_read+0x197/0xe40\n ksys_read+0x119/0x240\n __x64_sys_read+0x72/0xc0\n x64_sys_call+0x647/0x27e0\n do_syscall_64+0xe5/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nOnly check sk_protocol on full socks. tcp_abort() already knows how to\ndeal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it\nnever matched the code."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"5b4eb82475ae17d55974235c09e97044829426a8","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"a9651704c6fd64590b5ad4fbe7c3768accf95993","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"91a482a81eabddebf5430cbbdf12027e1a91b767","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"2534a5e5d360c2b10203cfa80f4ab9d021e48f2f","versionType":"git"},{"version":"4ddbcb886268af8d12a23e6640b39d1d9c652b1b","status":"affected","lessThan":"01b245ba016d44861690594e10f67e026ce8552f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/filter.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","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":["net/core/filter.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8"},{"url":"https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993"},{"url":"https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767"},{"url":"https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f"},{"url":"https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:18:35.149Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}