{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2024-38381","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-06-21T10:12:11.547Z","datePublished":"2024-06-21T10:18:12.302Z","dateUpdated":"2026-08-05T11:32:33.123Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:32:33.123Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: Fix uninit-value in nci_rx_work\n\nsyzbot reported the following uninit-value access issue [1]\n\nnci_rx_work() parses received packet from ndev->rx_q. It should be\nvalidated header size, payload size and total packet size before\nprocessing the packet. If an invalid packet is detected, it should be\nsilently discarded."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - The NCI RX path parses frames delivered by the NFC controller, which are driven by the NFC air interface, so a rogue tag/peer or NFCC within NFC radio range reaches this code. This matches the kernel CNA's established AV:A treatment of NCI packet-parsing bugs, including the direct follow-ups to this very `nci_valid_size()` helper (CVE-2025-40043, CVE-2026-43291).\nAC:L - Triggering only requires delivering a truncated NCI frame (`skb->len < 3`, or `skb->len < 3 + plen`); there is no race, no timing window, and no memory-layout precondition the attacker cannot influence. The condition is deterministic and reproducible on every frame.\nPR:N - `nci_recv_frame()` queues frames and `nci_rx_work()` parses them with no capability, credential, or authentication check anywhere on the path — NFC peering is entirely unauthenticated. No privileges of any kind are needed.\nUI:N - Parsing happens asynchronously in the `rx_wq` workqueue as soon as a frame arrives; no victim action is required beyond the NFC stack being active in its normal discovery/polling state.\nS:U - The out-of-bounds reads, the resulting state corruption, and the downstream heap overflow all occur within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - Handlers read up to ~260 bytes past a small heap object (e.g. `rsp_2 = skb->data + 6 + num_supported_rf_interfaces` with an uncontrolled 0–255 offset), and those bytes are copied into `ndev->targets[]` and `ndev->remote_gb`, which are exported to userspace via NFC netlink `NFC_EVENT_TARGETS_FOUND` and LLCP — a direct kernel-memory disclosure primitive.\nI:H - Out-of-bounds bytes are written into kernel state (`conn_info->max_pkt_payload_len`, `ndev->max_ctrl_pkt_payload_len`, `credits_cnt`), and a garbage `max_pkt_payload_len` makes `len = max_pkt_payload_len - skb->len - 1` in `nci_hci_send_data()` underflow, driving `skb_put_data()` past the skb tail for a heap out-of-bounds write.\nA:H - The unbounded reads (`skb->data[-1]` on a zero-length skb, and a 0–255-byte uncontrolled pointer offset) fault or trip KASAN, and the derived length underflow corrupts the heap, producing an oops or panic that is repeatable on demand."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/core.c"],"versions":[{"version":"11387b2effbb55f58dc2111ef4b4b896f2756240","lessThan":"406cfac9debd4a6d3dc5d9258ee086372a8c08b6","status":"affected","versionType":"git"},{"version":"03fe259649a551d336a7f20919b641ea100e3fff","lessThan":"485ded868ed62ceb2acb3a459d7843fd71472619","status":"affected","versionType":"git"},{"version":"755e53bbc61bc1aff90eafa64c8c2464fd3dfa3c","lessThan":"f80b786ab0550d0020191a59077b2c7e069db2d1","status":"affected","versionType":"git"},{"version":"ac68d9fa09e410fa3ed20fb721d56aa558695e16","lessThan":"ad4d196d2008c7f413167f0a693feb4f0439d7fe","status":"affected","versionType":"git"},{"version":"b51ec7fc9f877ef869c01d3ea6f18f6a64e831a7","lessThan":"e8c8e0d0d214c877fbad555df5b3ed558cd9b0c3","status":"affected","versionType":"git"},{"version":"a946ebee45b09294c8b0b0e77410b763c4d2817a","lessThan":"e53a7f8afcbd2886f2a94c5d56757328109730ea","status":"affected","versionType":"git"},{"version":"d24b03535e5eb82e025219c2f632b485409c898f","lessThan":"017ff397624930fd7ac7f1761f3c9d6a7100f68c","status":"affected","versionType":"git"},{"version":"d24b03535e5eb82e025219c2f632b485409c898f","lessThan":"e4a87abf588536d1cdfb128595e6e680af5cf3ed","status":"affected","versionType":"git"},{"version":"8948e30de81faee87eeee01ef42a1f6008f5a83a","status":"affected","versionType":"git"},{"version":"4.19.312","lessThan":"4.19.316","status":"affected","versionType":"semver"},{"version":"5.4.274","lessThan":"5.4.278","status":"affected","versionType":"semver"},{"version":"5.10.215","lessThan":"5.10.219","status":"affected","versionType":"semver"},{"version":"5.15.154","lessThan":"5.15.161","status":"affected","versionType":"semver"},{"version":"6.1.85","lessThan":"6.1.93","status":"affected","versionType":"semver"},{"version":"6.6.26","lessThan":"6.6.33","status":"affected","versionType":"semver"},{"version":"6.8.5","lessThan":"6.9","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/core.c"],"versions":[{"version":"6.9","status":"affected"},{"version":"0","lessThan":"6.9","status":"unaffected","versionType":"semver"},{"version":"4.19.316","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.278","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.219","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.161","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.93","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.33","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9.4","lessThanOrEqual":"6.9.*","status":"unaffected","versionType":"semver"},{"version":"6.10","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":"4.19.312","versionEndExcluding":"4.19.316"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.274","versionEndExcluding":"5.4.278"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.215","versionEndExcluding":"5.10.219"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.154","versionEndExcluding":"5.15.161"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.85","versionEndExcluding":"6.1.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.26","versionEndExcluding":"6.6.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.9.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8.5"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/406cfac9debd4a6d3dc5d9258ee086372a8c08b6"},{"url":"https://git.kernel.org/stable/c/485ded868ed62ceb2acb3a459d7843fd71472619"},{"url":"https://git.kernel.org/stable/c/f80b786ab0550d0020191a59077b2c7e069db2d1"},{"url":"https://git.kernel.org/stable/c/ad4d196d2008c7f413167f0a693feb4f0439d7fe"},{"url":"https://git.kernel.org/stable/c/e8c8e0d0d214c877fbad555df5b3ed558cd9b0c3"},{"url":"https://git.kernel.org/stable/c/e53a7f8afcbd2886f2a94c5d56757328109730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