CVE-2024-42276

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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 \u2014 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 \u2014 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": 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No timing race the attacker cannot control is involved.\nPR:L - Only an unprivileged local user with access to an NVMe namespace is required \u2014 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 \u2014 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": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "3f8ec1d6b0ebd8268307d52be8301973fa5a01ec", "versionType": "git"}, {"status": "affected", "version": "4aedb705437f6f98b45f45c394e6803ca67abd33", "lessThan": "be23ae63080e0bf9e246ab20207200bca6585eba", "versionType": "git"}, {"status": "affected", 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Se llama a nvme_map_data() cuando la solicitud tiene segmentos f\u00edsicos, por lo tanto, nvme_unmap_data() debe tener la misma condici\u00f3n para evitar la desreferencia."}], "id": "CVE-2024-42276", "lastModified": "2026-10-15T01:18:45.217", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-42276", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:11:52.374763Z", "version": "2.0.3"}}]}, "published": "2024-08-17T09:15:08.673", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f8ec1d6b0ebd8268307d52be8301973fa5a01ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/70100fe721840bf6d8e5abd25b8bffe4d2e049b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/77848b379e9f85a08048a2c8b3b4a7e8396f5f83"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7cc1f4cd90a00b6191cb8cda2d1302fdce59361c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/be23ae63080e0bf9e246ab20207200bca6585eba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c31fad1470389666ac7169fe43aa65bf5b7e2cfd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d135c3352f7c947a922da93c8e763ee6bc208b64"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "kernel: nvme-pci: add missing condition check for existence of mapped data", "id": "2305421", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2305421"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnvme-pci: add missing condition check for existence of mapped data\nnvme_map_data() is called when request has physical segments, hence\nthe nvme_unmap_data() should have same condition to avoid dereference."], "name": "CVE-2024-42276", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-08-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42276\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42276\nhttps://lore.kernel.org/linux-cve-announce/2024081741-CVE-2024-42276-cb0a@gregkh/T"], "threat_severity": "Moderate"}

{}