GHSA-5xg6-r8mx-769h

GHSA-5xg6-r8mx-769h PUBLISHED CVSS 8.800000190734863 HIGH

Record from GitHub Advisory Database · Published May 24, 2022

An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.

Risk scores

CVSS 3.1

8.800000190734863

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Timeline

May 24, 2022 CVE Published
Apr 9, 2026 Distribution Patch (10 in total, the first dated here)
Apr 9, 2026 Security Advisory

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vulnetix vdb vuln GHSA-5xg6-r8mx-769h
vulnetix vdb fixes GHSA-5xg6-r8mx-769h

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-5xg6-r8mx-769h/fixes/registry"

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