{"id":"CVE-2021-47612","state":"PUBLISHED","title":"nfc: fix segfault in nfc_genl_dump_devices_done","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fix segfault in nfc_genl_dump_devices_done\n\nWhen kmalloc in nfc_genl_dump_devices() fails then\nnfc_genl_dump_devices_done() segfaults as below\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014\nWorkqueue: events netlink_sock_destruct_work\nRIP: 0010:klist_iter_exit+0x26/0x80\nCall Trace:\n<TASK>\nclass_dev_iter_exit+0x15/0x20\nnfc_genl_dump_devices_done+0x3b/0x50\ngenl_lock_done+0x84/0xd0\nnetlink_sock_destruct+0x8f/0x270\n__sk_destruct+0x64/0x3b0\nsk_destruct+0xa8/0xd0\n__sk_free+0x2e8/0x3d0\nsk_free+0x51/0x90\nnetlink_sock_destruct_work+0x1c/0x20\nprocess_one_work+0x411/0x710\nworker_thread+0x6fd/0xa80","publishedAt":"2024-06-19T14:58:01.108Z","updatedAt":"2026-05-11T13:57:54.815Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"ea55b3797878752aa076b118afb727dcf79cac34","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"214af18abbe39db05beb305b2d11e87d09a6529c","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"6644989642844de830f9b072cd65c553cb55946c","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"2a8845b9603c545fddd17862282dc4c4ce0971e3","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"d731ecc6f2eaec68f4ad1542283bbc7d07bd0112","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"c602863ad28ec86794cb4ab4edea5324f555f181","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"d89e4211b51752daf063d638af50abed2fd5f96d","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"fd79a0cbf0b2e34bcc45b13acf962e2032a82203","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/netlink.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.1","versionType":"semver"},{"version":"4.4.296","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.294","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.259","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.222","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.167","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.87","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.10","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/netlink.c"]}],"references":["https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34","https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c","https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c","https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3","https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112","https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181","https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d","https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47612.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47612","state":"PUBLISHED","datePublished":"2024-06-19T14:58:01.108Z","dateUpdated":"2026-05-11T13:57:54.815Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-06-19T14:55:32.795Z"},"containers":{"cna":{"title":"nfc: 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Trace:\n<TASK>\nclass_dev_iter_exit+0x15/0x20\nnfc_genl_dump_devices_done+0x3b/0x50\ngenl_lock_done+0x84/0xd0\nnetlink_sock_destruct+0x8f/0x270\n__sk_destruct+0x64/0x3b0\nsk_destruct+0xa8/0xd0\n__sk_free+0x2e8/0x3d0\nsk_free+0x51/0x90\nnetlink_sock_destruct_work+0x1c/0x20\nprocess_one_work+0x411/0x710\nworker_thread+0x6fd/0xa80"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"ea55b3797878752aa076b118afb727dcf79cac34","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"214af18abbe39db05beb305b2d11e87d09a6529c","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"6644989642844de830f9b072cd65c553cb55946c","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"2a8845b9603c545fddd17862282dc4c4ce0971e3","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"d731ecc6f2eaec68f4ad1542283bbc7d07bd0112","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"c602863ad28ec86794cb4ab4edea5324f555f181","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"d89e4211b51752daf063d638af50abed2fd5f96d","versionType":"git"},{"version":"4d12b8b129f170d0fc3188de1e51a2a1b0f87730","status":"affected","lessThan":"fd79a0cbf0b2e34bcc45b13acf962e2032a82203","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/netlink.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.1","versionType":"semver"},{"version":"4.4.296","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.294","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.259","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.222","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.167","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.87","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.10","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/netlink.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34"},{"url":"https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c"},{"url":"https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c"},{"url":"https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3"},{"url":"https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112"},{"url":"https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181"},{"url":"https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d"},{"url":"https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:57:54.815Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"4.4.296"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"4.9.294"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"4.14.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"4.19.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"5.4.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"5.10.87"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"5.15.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1","versionEndExcluding":"5.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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