{"api_version":"1","generated_at":"2026-06-25T12:59:06+00:00","cve":"CVE-2026-53096","urls":{"html":"https://cve.report/CVE-2026-53096","api":"https://cve.report/api/cve/CVE-2026-53096.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53096","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53096"},"summary":{"title":"bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path\n\nThe DEVMAP_HASH branch in dev_map_redirect_multi() uses\nhlist_for_each_entry_safe() to iterate hash buckets, but this function\nruns under RCU protection (called from xdp_do_generic_redirect_map()\nin softirq context). Concurrent writers (__dev_map_hash_update_elem,\ndev_map_hash_delete_elem) modify the list using RCU primitives\n(hlist_add_head_rcu, hlist_del_rcu).\n\nhlist_for_each_entry_safe() performs plain pointer dereferences without\nrcu_dereference(), missing the acquire barrier needed to pair with\nwriters' rcu_assign_pointer(). On weakly-ordered architectures (ARM64,\nPOWER), a reader can observe a partially-constructed node. It also\ndefeats CONFIG_PROVE_RCU lockdep validation and KCSAN data-race\ndetection.\n\nReplace with hlist_for_each_entry_rcu() using rcu_read_lock_bh_held()\nas the lockdep condition, consistent with the rcu_dereference_check()\nused in the DEVMAP (non-hash) branch of the same functions. Also fix\nthe same incorrect lockdep_is_held(&dtab->index_lock) condition in\ndev_map_enqueue_multi(), where the lock is not held either.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:23","updated_at":"2026-06-24 17:17:23"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b089aa6e94d7a08e74d076a0fe274842dc9feccc","name":"https://git.kernel.org/stable/c/b089aa6e94d7a08e74d076a0fe274842dc9feccc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19","name":"https://git.kernel.org/stable/c/8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/571a05ea1baaccc0dc1e0d227b2cbc978b96d392","name":"https://git.kernel.org/stable/c/571a05ea1baaccc0dc1e0d227b2cbc978b96d392","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d4c4bd231ebad70e6f30db429e9640bf378b2f52","name":"https://git.kernel.org/stable/c/d4c4bd231ebad70e6f30db429e9640bf378b2f52","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4a3d0fe30b907ff324b1b49756f7e713d67f3645","name":"https://git.kernel.org/stable/c/4a3d0fe30b907ff324b1b49756f7e713d67f3645","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7027e705062482a8cea43a1c13ede3c35653966f","name":"https://git.kernel.org/stable/c/7027e705062482a8cea43a1c13ede3c35653966f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a","name":"https://git.kernel.org/stable/c/cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53096","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53096","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 4a3d0fe30b907ff324b1b49756f7e713d67f3645 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 b089aa6e94d7a08e74d076a0fe274842dc9feccc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 571a05ea1baaccc0dc1e0d227b2cbc978b96d392 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 d4c4bd231ebad70e6f30db429e9640bf378b2f52 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 7027e705062482a8cea43a1c13ede3c35653966f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 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":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/devmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4a3d0fe30b907ff324b1b49756f7e713d67f3645","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"},{"lessThan":"b089aa6e94d7a08e74d076a0fe274842dc9feccc","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"},{"lessThan":"571a05ea1baaccc0dc1e0d227b2cbc978b96d392","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"},{"lessThan":"cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"},{"lessThan":"d4c4bd231ebad70e6f30db429e9640bf378b2f52","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"},{"lessThan":"7027e705062482a8cea43a1c13ede3c35653966f","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"},{"lessThan":"8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19","status":"affected","version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/devmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.14"},{"lessThan":"5.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","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":"5.15.209","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path\n\nThe DEVMAP_HASH branch in dev_map_redirect_multi() uses\nhlist_for_each_entry_safe() to iterate hash buckets, but this function\nruns under RCU protection (called from xdp_do_generic_redirect_map()\nin softirq context). Concurrent writers (__dev_map_hash_update_elem,\ndev_map_hash_delete_elem) modify the list using RCU primitives\n(hlist_add_head_rcu, hlist_del_rcu).\n\nhlist_for_each_entry_safe() performs plain pointer dereferences without\nrcu_dereference(), missing the acquire barrier needed to pair with\nwriters' rcu_assign_pointer(). On weakly-ordered architectures (ARM64,\nPOWER), a reader can observe a partially-constructed node. It also\ndefeats CONFIG_PROVE_RCU lockdep validation and KCSAN data-race\ndetection.\n\nReplace with hlist_for_each_entry_rcu() using rcu_read_lock_bh_held()\nas the lockdep condition, consistent with the rcu_dereference_check()\nused in the DEVMAP (non-hash) branch of the same functions. Also fix\nthe same incorrect lockdep_is_held(&dtab->index_lock) condition in\ndev_map_enqueue_multi(), where the lock is not held either."}],"providerMetadata":{"dateUpdated":"2026-06-24T16:30:34.477Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4a3d0fe30b907ff324b1b49756f7e713d67f3645"},{"url":"https://git.kernel.org/stable/c/b089aa6e94d7a08e74d076a0fe274842dc9feccc"},{"url":"https://git.kernel.org/stable/c/571a05ea1baaccc0dc1e0d227b2cbc978b96d392"},{"url":"https://git.kernel.org/stable/c/cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a"},{"url":"https://git.kernel.org/stable/c/d4c4bd231ebad70e6f30db429e9640bf378b2f52"},{"url":"https://git.kernel.org/stable/c/7027e705062482a8cea43a1c13ede3c35653966f"},{"url":"https://git.kernel.org/stable/c/8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19"}],"title":"bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53096","datePublished":"2026-06-24T16:30:34.477Z","dateReserved":"2026-06-09T07:44:35.384Z","dateUpdated":"2026-06-24T16:30:34.477Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:23","lastModifiedDate":"2026-06-24 17:17:23","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53096","Ordinal":"1","Title":"bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path","CVE":"CVE-2026-53096","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53096","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path\n\nThe DEVMAP_HASH branch in dev_map_redirect_multi() uses\nhlist_for_each_entry_safe() to iterate hash buckets, but this function\nruns under RCU protection (called from xdp_do_generic_redirect_map()\nin softirq context). Concurrent writers (__dev_map_hash_update_elem,\ndev_map_hash_delete_elem) modify the list using RCU primitives\n(hlist_add_head_rcu, hlist_del_rcu).\n\nhlist_for_each_entry_safe() performs plain pointer dereferences without\nrcu_dereference(), missing the acquire barrier needed to pair with\nwriters' rcu_assign_pointer(). On weakly-ordered architectures (ARM64,\nPOWER), a reader can observe a partially-constructed node. It also\ndefeats CONFIG_PROVE_RCU lockdep validation and KCSAN data-race\ndetection.\n\nReplace with hlist_for_each_entry_rcu() using rcu_read_lock_bh_held()\nas the lockdep condition, consistent with the rcu_dereference_check()\nused in the DEVMAP (non-hash) branch of the same functions. Also fix\nthe same incorrect lockdep_is_held(&dtab->index_lock) condition in\ndev_map_enqueue_multi(), where the lock is not held either.","Type":"Description","Title":"bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path"}]}}}