{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40032", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.153Z", "datePublished": "2025-10-28T11:48:14.876Z", "dateUpdated": "2026-05-11T21:41:10.040Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:41:10.040Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-test: Add NULL check for DMA channels before release\n\nThe fields dma_chan_tx and dma_chan_rx of the struct pci_epf_test can be\nNULL even after EPF initialization. Then it is prudent to check that\nthey have non-NULL values before releasing the channels. Add the checks\nin pci_epf_test_clean_dma_chan().\n\nWithout the checks, NULL pointer dereferences happen and they can lead\nto a kernel panic in some cases:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050\n Call trace:\n dma_release_channel+0x2c/0x120 (P)\n pci_epf_test_epc_deinit+0x94/0xc0 [pci_epf_test]\n pci_epc_deinit_notify+0x74/0xc0\n tegra_pcie_ep_pex_rst_irq+0x250/0x5d8\n irq_thread_fn+0x34/0xb8\n irq_thread+0x18c/0x2e8\n kthread+0x14c/0x210\n ret_from_fork+0x10/0x20\n\n[mani: trimmed the stack trace]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/endpoint/functions/pci-epf-test.c"], "versions": [{"version": "5ebf3fc59bd20d17df3ba26159787d13cf20d362", "lessThan": "6411f840a9b5c47c00ca8e004733de232553870d", "status": "affected", "versionType": "git"}, {"version": "5ebf3fc59bd20d17df3ba26159787d13cf20d362", "lessThan": "0c5ce6b6ccc22d486cc7239ed908cb0ae5363a7b", "status": "affected", "versionType": "git"}, {"version": "5ebf3fc59bd20d17df3ba26159787d13cf20d362", "lessThan": "fb54ffd60064c4e5139a3eb216e877b1acae1c8b", "status": "affected", "versionType": "git"}, {"version": "5ebf3fc59bd20d17df3ba26159787d13cf20d362", "lessThan": "57f7fb0d1ac28540c0f6405c829bb9c3b89d8dba", "status": "affected", "versionType": "git"}, {"version": "5ebf3fc59bd20d17df3ba26159787d13cf20d362", "lessThan": "85afa9ea122dd9d4a2ead104a951d318975dcd25", "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/pci/endpoint/functions/pci-epf-test.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.157", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.113", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.54", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "5.7", "versionEndExcluding": "6.1.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6411f840a9b5c47c00ca8e004733de232553870d"}, {"url": "https://git.kernel.org/stable/c/0c5ce6b6ccc22d486cc7239ed908cb0ae5363a7b"}, {"url": "https://git.kernel.org/stable/c/fb54ffd60064c4e5139a3eb216e877b1acae1c8b"}, {"url": "https://git.kernel.org/stable/c/57f7fb0d1ac28540c0f6405c829bb9c3b89d8dba"}, {"url": "https://git.kernel.org/stable/c/85afa9ea122dd9d4a2ead104a951d318975dcd25"}], "title": "PCI: endpoint: pci-epf-test: Add NULL check for DMA channels before release", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-test: Add NULL check for DMA channels before release\n\nThe fields dma_chan_tx and dma_chan_rx of the struct pci_epf_test can be\nNULL even after EPF initialization. Then it is prudent to check that\nthey have non-NULL values before releasing the channels. Add the checks\nin pci_epf_test_clean_dma_chan().\n\nWithout the checks, NULL pointer dereferences happen and they can lead\nto a kernel panic in some cases:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050\n Call trace:\n dma_release_channel+0x2c/0x120 (P)\n pci_epf_test_epc_deinit+0x94/0xc0 [pci_epf_test]\n pci_epc_deinit_notify+0x74/0xc0\n tegra_pcie_ep_pex_rst_irq+0x250/0x5d8\n irq_thread_fn+0x34/0xb8\n irq_thread+0x18c/0x2e8\n kthread+0x14c/0x210\n ret_from_fork+0x10/0x20\n\n[mani: trimmed the stack trace]"}], "id": "CVE-2025-40032", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-10-28T12:15:37.010", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c5ce6b6ccc22d486cc7239ed908cb0ae5363a7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57f7fb0d1ac28540c0f6405c829bb9c3b89d8dba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6411f840a9b5c47c00ca8e004733de232553870d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/85afa9ea122dd9d4a2ead104a951d318975dcd25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fb54ffd60064c4e5139a3eb216e877b1acae1c8b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: PCI: endpoint: pci-epf-test: Add NULL check for DMA channels before release", "id": "2406753", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406753"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40032", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40032\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40032\nhttps://lore.kernel.org/linux-cve-announce/2025102810-CVE-2025-40032-a2fd@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-29T10:58:36.321135+00:00", "updated": "2025-10-29T10:58:36.321160+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}