{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-35915", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.122Z", "datePublished": "2024-05-19T08:35:08.239Z", "dateUpdated": "2026-08-05T11:30:57.434Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:30:57.434Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet\n\nsyzbot reported the following uninit-value access issue [1][2]:\n\nnci_rx_work() parses and processes received packet. When the payload\nlength is zero, each message type handler reads uninitialized payload\nand KMSAN detects this issue. The receipt of a packet with a zero-size\npayload is considered unexpected, and therefore, such packets should be\nsilently discarded.\n\nThis patch resolved this issue by checking payload size before calling\neach message type handler codes." } ], "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 - NCI control/notification frames are delivered to `nci_rx_work()` by the NFC controller whose notification stream is driven by an NFC peer/tag in adjacent RF range, and the same parser is fed by the N_NCI tty line discipline and /dev/virtual_nci on the local host. This matches the kernel CNA's scoring of the directly related NCI packet-validation fixes (CVE-2025-40043, CVE-2026-43291, CVE-2026-63915) as Adjacent.\nAC:L - Triggering only requires that a single NCI frame with a zero payload length field reach the RX queue; the missing check is unconditional, with no race, timing window, or memory-layout precondition. Every dispatch through `nci_rsp_packet()`/`nci_ntf_packet()` then reads past the received data deterministically.\nPR:N - The RF-side path requires no authentication or privileges of any kind — an NFC peer in range needs no credentials, and the NCI parser runs before any application-level policy. The local fallbacks (N_NCI ldisc via TIOCSETD on a pty) are reachable by an ordinary unprivileged user.\nUI:N - Frames are consumed by the `nci_rx_work` workqueue as soon as they are queued by `nci_recv_frame()`; NFC polling/discovery runs autonomously on the device. No victim action is needed.\nS:U - The uninitialized reads, out-of-bounds accesses, and state corruption are all confined to kernel memory and the NFC device state within the same security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - Uninitialized/out-of-bounds heap bytes are memcpy'd into `nfc_target.nfcid1`, `sensb_res`, and `sensf_res` by `nci_extract_rf_params_*()` and then exported to userspace by `nfc_genl_send_target()` as netlink attributes, a direct kernel heap information leak; `nci_core_init_rsp_packet_v1()` additionally reads up to ~270 bytes past the payload via an uninitialized `num_supported_rf_interfaces` offset.\nI:H - `nci_core_conn_credits_ntf_packet()` writes `conn_entries[i].conn_id` back into the skb beyond the received payload and adds uninitialized credit values to connection flow control, while uninit values are stored into `ndev->nci_ver`, `max_ctrl_pkt_payload_len`, `supported_rf_interfaces`, and `manufact_specific_info`, corrupting kernel state used by subsequent parsing and transmission decisions.\nA:H - Out-of-bounds reads past the skb buffer and the corrupted length/interface counts driving further parsing can fault or oops the kernel, and the poisoned NCI device state (credit counters, `nci_ver`, packet length limits) leaves the NFC stack in an inconsistent state. Any such memory-safety error in softirq/workqueue context is a full kernel crash." } ] } ], "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": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "11387b2effbb55f58dc2111ef4b4b896f2756240", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "03fe259649a551d336a7f20919b641ea100e3fff", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "755e53bbc61bc1aff90eafa64c8c2464fd3dfa3c", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "ac68d9fa09e410fa3ed20fb721d56aa558695e16", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "b51ec7fc9f877ef869c01d3ea6f18f6a64e831a7", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "a946ebee45b09294c8b0b0e77410b763c4d2817a", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "8948e30de81faee87eeee01ef42a1f6008f5a83a", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "d24b03535e5eb82e025219c2f632b485409c898f", "status": "affected", "versionType": "git" } ] }, { "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": "3.2", "status": "affected" }, { "version": "0", "lessThan": "3.2", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.312", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.274", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.215", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.154", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.85", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.26", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.5", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "3.2", "versionEndExcluding": "4.19.312" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.4.274" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.10.215" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.15.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.1.85" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.6.26" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.8.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/11387b2effbb55f58dc2111ef4b4b896f2756240" }, { "url": "https://git.kernel.org/stable/c/03fe259649a551d336a7f20919b641ea100e3fff" }, { "url": "https://git.kernel.org/stable/c/755e53bbc61bc1aff90eafa64c8c2464fd3dfa3c" }, { "url": "https://git.kernel.org/stable/c/ac68d9fa09e410fa3ed20fb721d56aa558695e16" }, { "url": "https://git.kernel.org/stable/c/b51ec7fc9f877ef869c01d3ea6f18f6a64e831a7" }, { "url": "https://git.kernel.org/stable/c/a946ebee45b09294c8b0b0e77410b763c4d2817a" }, { "url": "https://git.kernel.org/stable/c/8948e30de81faee87eeee01ef42a1f6008f5a83a" }, { "url": "https://git.kernel.org/stable/c/d24b03535e5eb82e025219c2f632b485409c898f" } ], "title": "nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", 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"Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html" } ] } ] }, "dataVersion": "5.2" }