{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53096","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.384Z","datePublished":"2026-06-24T16:30:34.477Z","dateUpdated":"2026-06-28T06:39:18.779Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:39:18.779Z"},"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."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/devmap.c"],"versions":[{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"4a3d0fe30b907ff324b1b49756f7e713d67f3645","status":"affected","versionType":"git"},{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"b089aa6e94d7a08e74d076a0fe274842dc9feccc","status":"affected","versionType":"git"},{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"571a05ea1baaccc0dc1e0d227b2cbc978b96d392","status":"affected","versionType":"git"},{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a","status":"affected","versionType":"git"},{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"d4c4bd231ebad70e6f30db429e9640bf378b2f52","status":"affected","versionType":"git"},{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"7027e705062482a8cea43a1c13ede3c35653966f","status":"affected","versionType":"git"},{"version":"e624d4ed4aa8cc3c69d1359b0aaea539203ed266","lessThan":"8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/devmap.c"],"versions":[{"version":"5.14","status":"affected"},{"version":"0","lessThan":"5.14","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.141","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.91","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.33","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.1"}]}]}],"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"}}}}