{"api_version":"1","generated_at":"2026-07-01T05:10:30+00:00","cve":"CVE-2026-53035","urls":{"html":"https://cve.report/CVE-2026-53035","api":"https://cve.report/api/cve/CVE-2026-53035.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53035","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53035"},"summary":{"title":"bpf, sockmap: Fix af_unix iter deadlock","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix af_unix iter deadlock\n\nbpf_iter_unix_seq_show() may deadlock when lock_sock_fast() takes the fast\npath and the iter prog attempts to update a sockmap. Which ends up spinning\nat sock_map_update_elem()'s bh_lock_sock():\n\nWARNING: possible recursive locking detected\ntest_progs/1393 is trying to acquire lock:\nffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: sock_map_update_elem+0xdb/0x1f0\n\nbut task is already holding lock:\nffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: __lock_sock_fast+0x37/0xe0\n\nother info that might help us debug this:\n Possible unsafe locking scenario:\n\n       CPU0\n       ----\n  lock(slock-AF_UNIX);\n  lock(slock-AF_UNIX);\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n4 locks held by test_progs/1393:\n #0: ffff88814b59c790 (&p->lock){+.+.}-{4:4}, at: bpf_seq_read+0x59/0x10d0\n #1: ffff88811ec25fd8 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: bpf_seq_read+0x42c/0x10d0\n #2: ffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: __lock_sock_fast+0x37/0xe0\n #3: ffffffff85a6a7c0 (rcu_read_lock){....}-{1:3}, at: bpf_iter_run_prog+0x51d/0xb00\n\nCall Trace:\n dump_stack_lvl+0x5d/0x80\n print_deadlock_bug.cold+0xc0/0xce\n __lock_acquire+0x130f/0x2590\n lock_acquire+0x14e/0x2b0\n _raw_spin_lock+0x30/0x40\n sock_map_update_elem+0xdb/0x1f0\n bpf_prog_2d0075e5d9b721cd_dump_unix+0x55/0x4f4\n bpf_iter_run_prog+0x5b9/0xb00\n bpf_iter_unix_seq_show+0x1f7/0x2e0\n bpf_seq_read+0x42c/0x10d0\n vfs_read+0x171/0xb20\n ksys_read+0xff/0x200\n do_syscall_64+0x6b/0x3a0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:14","updated_at":"2026-06-24 17:17:14"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bd3592129f24243713673a07225cf1f15a9bb835","name":"https://git.kernel.org/stable/c/bd3592129f24243713673a07225cf1f15a9bb835","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3cef33b9813b78f227942572fb317afcd5c9ac94","name":"https://git.kernel.org/stable/c/3cef33b9813b78f227942572fb317afcd5c9ac94","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/87828b380956d4986f59f2c086e0b09b3e6cdaae","name":"https://git.kernel.org/stable/c/87828b380956d4986f59f2c086e0b09b3e6cdaae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/66d9fab4565eafe1afe7ba0581f79b76073b60fa","name":"https://git.kernel.org/stable/c/66d9fab4565eafe1afe7ba0581f79b76073b60fa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4d328dd695383224aa750ddee6b4ad40c0f8d205","name":"https://git.kernel.org/stable/c/4d328dd695383224aa750ddee6b4ad40c0f8d205","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/527057ebe8076dfbcaef51195ff1b7508646be2c","name":"https://git.kernel.org/stable/c/527057ebe8076dfbcaef51195ff1b7508646be2c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53035","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53035","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c860a43dd77f969bb959336a2f743d7103a8f63 bd3592129f24243713673a07225cf1f15a9bb835 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c860a43dd77f969bb959336a2f743d7103a8f63 3cef33b9813b78f227942572fb317afcd5c9ac94 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c860a43dd77f969bb959336a2f743d7103a8f63 87828b380956d4986f59f2c086e0b09b3e6cdaae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c860a43dd77f969bb959336a2f743d7103a8f63 527057ebe8076dfbcaef51195ff1b7508646be2c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c860a43dd77f969bb959336a2f743d7103a8f63 66d9fab4565eafe1afe7ba0581f79b76073b60fa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c860a43dd77f969bb959336a2f743d7103a8f63 4d328dd695383224aa750ddee6b4ad40c0f8d205 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.141 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.91 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.33 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53035","cve":"CVE-2026-53035","epss":"0.001720000","percentile":"0.068940000","score_date":"2026-06-29","updated_at":"2026-06-30 00:06:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/unix/af_unix.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bd3592129f24243713673a07225cf1f15a9bb835","status":"affected","version":"2c860a43dd77f969bb959336a2f743d7103a8f63","versionType":"git"},{"lessThan":"3cef33b9813b78f227942572fb317afcd5c9ac94","status":"affected","version":"2c860a43dd77f969bb959336a2f743d7103a8f63","versionType":"git"},{"lessThan":"87828b380956d4986f59f2c086e0b09b3e6cdaae","status":"affected","version":"2c860a43dd77f969bb959336a2f743d7103a8f63","versionType":"git"},{"lessThan":"527057ebe8076dfbcaef51195ff1b7508646be2c","status":"affected","version":"2c860a43dd77f969bb959336a2f743d7103a8f63","versionType":"git"},{"lessThan":"66d9fab4565eafe1afe7ba0581f79b76073b60fa","status":"affected","version":"2c860a43dd77f969bb959336a2f743d7103a8f63","versionType":"git"},{"lessThan":"4d328dd695383224aa750ddee6b4ad40c0f8d205","status":"affected","version":"2c860a43dd77f969bb959336a2f743d7103a8f63","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/unix/af_unix.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix af_unix iter deadlock\n\nbpf_iter_unix_seq_show() may deadlock when lock_sock_fast() takes the fast\npath and the iter prog attempts to update a sockmap. Which ends up spinning\nat sock_map_update_elem()'s bh_lock_sock():\n\nWARNING: possible recursive locking detected\ntest_progs/1393 is trying to acquire lock:\nffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: sock_map_update_elem+0xdb/0x1f0\n\nbut task is already holding lock:\nffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: __lock_sock_fast+0x37/0xe0\n\nother info that might help us debug this:\n Possible unsafe locking scenario:\n\n       CPU0\n       ----\n  lock(slock-AF_UNIX);\n  lock(slock-AF_UNIX);\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n4 locks held by test_progs/1393:\n #0: ffff88814b59c790 (&p->lock){+.+.}-{4:4}, at: bpf_seq_read+0x59/0x10d0\n #1: ffff88811ec25fd8 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: bpf_seq_read+0x42c/0x10d0\n #2: ffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: __lock_sock_fast+0x37/0xe0\n #3: ffffffff85a6a7c0 (rcu_read_lock){....}-{1:3}, at: bpf_iter_run_prog+0x51d/0xb00\n\nCall Trace:\n dump_stack_lvl+0x5d/0x80\n print_deadlock_bug.cold+0xc0/0xce\n __lock_acquire+0x130f/0x2590\n lock_acquire+0x14e/0x2b0\n _raw_spin_lock+0x30/0x40\n sock_map_update_elem+0xdb/0x1f0\n bpf_prog_2d0075e5d9b721cd_dump_unix+0x55/0x4f4\n bpf_iter_run_prog+0x5b9/0xb00\n bpf_iter_unix_seq_show+0x1f7/0x2e0\n bpf_seq_read+0x42c/0x10d0\n vfs_read+0x171/0xb20\n ksys_read+0xff/0x200\n do_syscall_64+0x6b/0x3a0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e"}],"providerMetadata":{"dateUpdated":"2026-06-24T16:29:42.560Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bd3592129f24243713673a07225cf1f15a9bb835"},{"url":"https://git.kernel.org/stable/c/3cef33b9813b78f227942572fb317afcd5c9ac94"},{"url":"https://git.kernel.org/stable/c/87828b380956d4986f59f2c086e0b09b3e6cdaae"},{"url":"https://git.kernel.org/stable/c/527057ebe8076dfbcaef51195ff1b7508646be2c"},{"url":"https://git.kernel.org/stable/c/66d9fab4565eafe1afe7ba0581f79b76073b60fa"},{"url":"https://git.kernel.org/stable/c/4d328dd695383224aa750ddee6b4ad40c0f8d205"}],"title":"bpf, sockmap: Fix af_unix iter deadlock","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53035","datePublished":"2026-06-24T16:29:42.560Z","dateReserved":"2026-06-09T07:44:35.380Z","dateUpdated":"2026-06-24T16:29:42.560Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:14","lastModifiedDate":"2026-06-24 17:17:14","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53035","Ordinal":"1","Title":"bpf, sockmap: Fix af_unix iter deadlock","CVE":"CVE-2026-53035","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53035","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix af_unix iter deadlock\n\nbpf_iter_unix_seq_show() may deadlock when lock_sock_fast() takes the fast\npath and the iter prog attempts to update a sockmap. Which ends up spinning\nat sock_map_update_elem()'s bh_lock_sock():\n\nWARNING: possible recursive locking detected\ntest_progs/1393 is trying to acquire lock:\nffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: sock_map_update_elem+0xdb/0x1f0\n\nbut task is already holding lock:\nffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: __lock_sock_fast+0x37/0xe0\n\nother info that might help us debug this:\n Possible unsafe locking scenario:\n\n       CPU0\n       ----\n  lock(slock-AF_UNIX);\n  lock(slock-AF_UNIX);\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n4 locks held by test_progs/1393:\n #0: ffff88814b59c790 (&p->lock){+.+.}-{4:4}, at: bpf_seq_read+0x59/0x10d0\n #1: ffff88811ec25fd8 (sk_lock-AF_UNIX){+.+.}-{0:0}, at: bpf_seq_read+0x42c/0x10d0\n #2: ffff88811ec25f58 (slock-AF_UNIX){+...}-{3:3}, at: __lock_sock_fast+0x37/0xe0\n #3: ffffffff85a6a7c0 (rcu_read_lock){....}-{1:3}, at: bpf_iter_run_prog+0x51d/0xb00\n\nCall Trace:\n dump_stack_lvl+0x5d/0x80\n print_deadlock_bug.cold+0xc0/0xce\n __lock_acquire+0x130f/0x2590\n lock_acquire+0x14e/0x2b0\n _raw_spin_lock+0x30/0x40\n sock_map_update_elem+0xdb/0x1f0\n bpf_prog_2d0075e5d9b721cd_dump_unix+0x55/0x4f4\n bpf_iter_run_prog+0x5b9/0xb00\n bpf_iter_unix_seq_show+0x1f7/0x2e0\n bpf_seq_read+0x42c/0x10d0\n vfs_read+0x171/0xb20\n ksys_read+0xff/0x200\n do_syscall_64+0x6b/0x3a0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e","Type":"Description","Title":"bpf, sockmap: Fix af_unix iter deadlock"}]}}}