{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-53214", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:25.023Z", "datePublished": "2024-12-27T13:49:59.555Z", "dateUpdated": "2026-08-05T11:44:40.196Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:44:40.196Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Properly hide first-in-list PCIe extended capability\n\nThere are cases where a PCIe extended capability should be hidden from\nthe user. For example, an unknown capability (i.e., capability with ID\ngreater than PCI_EXT_CAP_ID_MAX) or a capability that is intentionally\nchosen to be hidden from the user.\n\nHiding a capability is done by virtualizing and modifying the 'Next\nCapability Offset' field of the previous capability so it points to the\ncapability after the one that should be hidden.\n\nThe special case where the first capability in the list should be hidden\nis handled differently because there is no previous capability that can\nbe modified. In this case, the capability ID and version are zeroed\nwhile leaving the next pointer intact. This hides the capability and\nleaves an anchor for the rest of the capability list.\n\nHowever, today, hiding the first capability in the list is not done\nproperly if the capability is unknown, as struct\nvfio_pci_core_device->pci_config_map is set to the capability ID during\ninitialization but the capability ID is not properly checked later when\nused in vfio_config_do_rw(). This leads to the following warning [1] and\nto an out-of-bounds access to ecap_perms array.\n\nFix it by checking cap_id in vfio_config_do_rw(), and if it is greater\nthan PCI_EXT_CAP_ID_MAX, use an alternative struct perm_bits for direct\nread only access instead of the ecap_perms array.\n\nNote that this is safe since the above is the only case where cap_id can\nexceed PCI_EXT_CAP_ID_MAX (except for the special capabilities, which\nare already checked before).\n\n[1]\n\nWARNING: CPU: 118 PID: 5329 at drivers/vfio/pci/vfio_pci_config.c:1900 vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\nCPU: 118 UID: 0 PID: 5329 Comm: simx-qemu-syste Not tainted 6.12.0+ #1\n(snip)\nCall Trace:\n \n ? show_regs+0x69/0x80\n ? __warn+0x8d/0x140\n ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\n ? report_bug+0x18f/0x1a0\n ? handle_bug+0x63/0xa0\n ? exc_invalid_op+0x19/0x70\n ? asm_exc_invalid_op+0x1b/0x20\n ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\n ? vfio_pci_config_rw+0x244/0x430 [vfio_pci_core]\n vfio_pci_rw+0x101/0x1b0 [vfio_pci_core]\n vfio_pci_core_read+0x1d/0x30 [vfio_pci_core]\n vfio_device_fops_read+0x27/0x40 [vfio]\n vfs_read+0xbd/0x340\n ? vfio_device_fops_unl_ioctl+0xbb/0x740 [vfio]\n ? __rseq_handle_notify_resume+0xa4/0x4b0\n __x64_sys_pread64+0x96/0xc0\n x64_sys_call+0x1c3d/0x20d0\n do_syscall_64+0x4d/0x120\n entry_SYSCALL_64_after_hwframe+0x76/0x7e" } ], "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 vulnerability is reached only through pread()/pwrite() (or ioctl-driven config access) on a local /dev/vfio device file held by the process that owns the assigned PCI device. There is no network-facing path into vfio_config_do_rw().\nAC:L - Once a device whose first extended capability is unknown to the kernel's table is assigned, a single unprivileged pread() at offset 0x100 deterministically indexes ecap_perms[] out of bounds — no race, no memory-layout grooming, and no timing window to win. The precondition is a property of the vulnerable configuration, not an attack-time hurdle.\nPR:L - The IOMMU-backed VFIO path has no capable() gate (only VFIO_NO_IOMMU requires CAP_SYS_RAWIO); access is granted by file permissions on /dev/vfio/*, which is routinely given to unprivileged users such as the qemu user or DPDK/SPDK applications. That unprivileged process can trigger the OOB directly.\nUI:N - The attacker triggers the bug entirely on its own with a read or write on a file descriptor it already holds; no victim action is required. QEMU even hits it unprompted during its normal config-space scan at device realize.\nS:U - The out-of-bounds access, the corrupted state, and the resulting compromise all occur within the host kernel, which is the same security authority the local attacker escalates within. This is standard local kernel memory corruption, not an IOMMU or hypervisor boundary bypass.\nC:H - The OOB read pulls a struct perm_bits from up to ~6.6 KB past the array, and its virt/write members are dereferenced as pointers in vfio_default_config_read(), memcpy-ing from an arbitrary kernel address and using the result to mask data returned to userspace — an arbitrary kernel-memory disclosure oracle on top of the leaked module .data contents.\nI:H - perm->readfn and perm->writefn are invoked as indirect calls through function pointers loaded from out-of-bounds memory, with perm->writefn additionally receiving attacker-controlled val and pos — a control-flow hijack primitive leading to arbitrary kernel code execution.\nA:H - At minimum the path takes a WARN_ON (panic under panic_on_warn) and then calls a garbage function pointer and dereferences wild pointers, producing an oops, CFI violation panic, or page fault. The crash is fully repeatable on demand." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/vfio/pci/vfio_pci_config.c" ], "versions": [ { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "4464e5aa3aa4574063640f1082f7d7e323af8eb4", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "7d121f66b67921fb3b95e0ea9856bfba53733e91", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "0918f5643fc6c3f7801f4a22397d2cc09ba99207", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "9567bd34aa3b986736c290c5bcba47e0182ac47a", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "6c6502d944168cbd7e03a4a08ad6488f78d73485", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "06f2fcf49854ad05a09d09e0dbee6544fff04695", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "949bee8065a85a5c6607c624dc05b5bc17119699", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "1ef195178fb552478eb2587df4ad3be14ef76507", "status": "affected", "versionType": "git" }, { "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153", "lessThan": "fe4bf8d0b6716a423b16495d55b35d3fe515905d", "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/vfio/pci/vfio_pci_config.c" ], "versions": [ { "version": "3.6", "status": "affected" }, { "version": "0", "lessThan": "3.6", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.325", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.287", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.231", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.174", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.64", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.11", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.2", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "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": "3.6", "versionEndExcluding": "4.19.325" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "5.4.287" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "5.10.231" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "5.15.174" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "6.1.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "6.6.64" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "6.11.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "6.12.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4464e5aa3aa4574063640f1082f7d7e323af8eb4" }, { "url": "https://git.kernel.org/stable/c/7d121f66b67921fb3b95e0ea9856bfba53733e91" }, { "url": "https://git.kernel.org/stable/c/0918f5643fc6c3f7801f4a22397d2cc09ba99207" }, { "url": "https://git.kernel.org/stable/c/9567bd34aa3b986736c290c5bcba47e0182ac47a" }, { "url": "https://git.kernel.org/stable/c/6c6502d944168cbd7e03a4a08ad6488f78d73485" }, { "url": "https://git.kernel.org/stable/c/06f2fcf49854ad05a09d09e0dbee6544fff04695" }, { "url": "https://git.kernel.org/stable/c/949bee8065a85a5c6607c624dc05b5bc17119699" }, { "url": "https://git.kernel.org/stable/c/1ef195178fb552478eb2587df4ad3be14ef76507" }, { "url": "https://git.kernel.org/stable/c/fe4bf8d0b6716a423b16495d55b35d3fe515905d" } ], "title": "vfio/pci: Properly hide first-in-list PCIe extended capability", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-53214", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:03:33.423876Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-129", "description": "CWE-129 Improper Validation of Array Index" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:07:19.463Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:47:42.592Z" } } ] } }