CVE-2026-53114

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{"bugzilla": {"description": "kernel: perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler", "id": "2492402", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492402"}, "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"}, "cwe": "CWE-663", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nperf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler\nCalling perf_allow_kernel() from the NMI context is unsafe and could be\nfatal. Capture the permission at event-initialization time by storing it\nin event->hw.flags, and have the NMI handler rely on that cached flag\ninstead of making the call directly.", "A flaw was found in the Linux kernel's performance monitoring unit (perf/amd/ibs). An issue exists where calling `perf_allow_kernel()` from a Non-Maskable Interrupt (NMI) handler is unsafe. This could lead to a system crash, resulting in a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-53114", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53114\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53114\nhttps://lore.kernel.org/linux-cve-announce/2026062415-CVE-2026-53114-dc8b@gregkh/T"], "threat_severity": "Moderate"}

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