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{"bugzilla": {"description": "kernel: pci_iounmap(): Fix MMIO mapping leak", "id": "2278348", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278348"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\npci_iounmap(): Fix MMIO mapping leak\nThe #ifdef ARCH_HAS_GENERIC_IOPORT_MAP accidentally also guards iounmap(),\nwhich means MMIO mappings are leaked.\nMove the guard so we call iounmap() for MMIO mappings.", "A vulnerability was found in the pci_iounmap() function in the Linux Kernel, where a lack of proper checks can result in memory leakage. This occurs due to the #ifdef ARCH_HAS_GENERIC_IOPORT_MAP macro which also guards the iounmap() function, causing MMIO mappings to leak. This issue can lead to resource exhaustion over time."], "name": "CVE-2024-26977", "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": "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": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26977\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26977\nhttps://lore.kernel.org/linux-cve-announce/2024050133-CVE-2024-26977-cf63@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T23:06:41.172992+00:00", "updated": "2025-07-12T23:06:41.173059+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}