{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-42276", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-30T07:40:12.261Z", "datePublished": "2024-08-17T09:08:44.694Z", "dateUpdated": "2026-08-05T11:36:17.006Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:36:17.006Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: add missing condition check for existence of mapped data\n\nnvme_map_data() is called when request has physical segments, hence\nthe nvme_unmap_data() should have same condition to avoid dereference." } ], "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" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is in the NVMe PCI host driver's request submission path (`nvme_prep_rq`), reached only by locally submitted block I/O — ordinary filesystem/direct I/O or `NVME_IOCTL_IO_CMD`/io_uring passthrough on `/dev/nvme0n1`. There is no remote or adjacent-network path to this code.\nAC:L - The error path is entered when the metadata DMA mapping fails, which an attacker can drive by flooding concurrent I/O to exhaust swiotlb bounce-buffer slots or IOVA space (guaranteed bounce-through in confidential-compute guests or DMA-mask-limited setups), and the stale `iod` state is deterministic once the path is taken. No timing race the attacker cannot control is involved.\nPR:L - Only an unprivileged local user with access to an NVMe namespace is required — normal file I/O on a PI/metadata-formatted namespace sets `REQ_INTEGRITY` with no capability at all, and `nvme_cmd_allowed()` explicitly permits unprivileged passthrough of non-intrusive I/O commands without `CAP_SYS_ADMIN`.\nUI:N - The attacker triggers the condition entirely through its own I/O submissions; no action by another user or administrator is needed.\nS:U - The corruption is confined to kernel memory and DMA mappings managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `nvme_unmap_data()` reads a stale, already-freed `iod->sgt.sgl` scatterlist, and the resulting mempool double-free lets two concurrent requests share one SGL so one request's data can be steered into another's buffers; spurious `dma_unmap_page()` of a reassigned IOVA can likewise expose unrelated memory contents to the device.\nI:H - The double `mempool_free()` of the scatterlist is a heap double-free primitive suitable for controlled heap corruption, and tearing down a DMA mapping that has been reallocated leaves the device DMA-writing into memory now owned by other subsystems — both give arbitrary-write-class integrity impact.\nA:H - The path hits `WARN_ON_ONCE()` and then unmaps DMA using garbage addresses and frees an invalid pointer, producing IOMMU faults, slab/mempool corruption, and kernel oops or panic." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nvme/host/pci.c" ], "versions": [ { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "3f8ec1d6b0ebd8268307d52be8301973fa5a01ec", "status": "affected", "versionType": "git" }, { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "be23ae63080e0bf9e246ab20207200bca6585eba", "status": "affected", "versionType": "git" }, { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "7cc1f4cd90a00b6191cb8cda2d1302fdce59361c", "status": "affected", "versionType": "git" }, { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "d135c3352f7c947a922da93c8e763ee6bc208b64", "status": "affected", "versionType": "git" }, { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "77848b379e9f85a08048a2c8b3b4a7e8396f5f83", "status": "affected", "versionType": "git" }, { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "70100fe721840bf6d8e5abd25b8bffe4d2e049b7", "status": "affected", "versionType": "git" }, { "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "c31fad1470389666ac7169fe43aa65bf5b7e2cfd", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nvme/host/pci.c" ], "versions": [ { "version": "5.2", "status": "affected" }, { "version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.282", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.224", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.165", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.103", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.44", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.3", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "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": "5.2", "versionEndExcluding": "5.4.282" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.10.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.15.165" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.1.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.6.44" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.10.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3f8ec1d6b0ebd8268307d52be8301973fa5a01ec" }, { "url": "https://git.kernel.org/stable/c/be23ae63080e0bf9e246ab20207200bca6585eba" }, { "url": "https://git.kernel.org/stable/c/7cc1f4cd90a00b6191cb8cda2d1302fdce59361c" }, { "url": "https://git.kernel.org/stable/c/d135c3352f7c947a922da93c8e763ee6bc208b64" }, { "url": "https://git.kernel.org/stable/c/77848b379e9f85a08048a2c8b3b4a7e8396f5f83" }, { "url": "https://git.kernel.org/stable/c/70100fe721840bf6d8e5abd25b8bffe4d2e049b7" }, { "url": "https://git.kernel.org/stable/c/c31fad1470389666ac7169fe43aa65bf5b7e2cfd" } ], "title": "nvme-pci: add missing condition check for existence of mapped data", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-42276", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:11:52.374763Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:31.619Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:03:15.961Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T11:56:44.403Z" }, "affected": [ { "vendor": "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" } ] } ] } }