CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HIn the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry vgic_its_invalidate_cache() walks the per-ITS translation cache with xa_for_each() and drops the cache's reference on each entry with vgic_put_irq(). It puts the iterated pointer, though, rather than the value returned by xa_erase(). The function is called from contexts that do not exclude one another: the ITS command handlers hold its_lock, the GITS_CTLR write path holds cmd_lock, and the path that clears EnableLPIs in a redistributor's GICR_CTLR holds neither. Two or more of them can drain the same cache concurrently, and if each one observes the same entry, erases it and then puts it, the single reference the cache holds on that entry is dropped more than once. The entry can then be freed while an ITE still maps it. xa_erase() is atomic and returns the previous entry, so put only the entry that this context actually removed. The cache reference is then dropped exactly once per entry even when the invalidations run concurrently, and the behavior is unchanged when only one context runs.
A vulnerability (CVE-2026-64561) in the KVM virtualization software allows a privileged guest user to potentially escape the virtualization environment and execute code on the host system. This stems from a stale-root ch…
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Some of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and data integrity compromise. These vulnerabiliti…
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Some of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and denial of service attacks. The vulnerabilities…
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Some of these vulnerabilities allow for privilege escalation, remote denial of service, and data confidentiality compromise. The vulnerabilitie…
Multiple vulnerabilities have been discovered in Red Hat's Linux kernel. These vulnerabilities can lead to arbitrary code execution, privilege escalation, and a denial-of-service attack. Red Hat has released security adv…
A 16-year-old use-after-free vulnerability in Linux's KVM hypervisor, dubbed ‘Januscape’ (CVE-2026-53359), allows guest virtual machines to corrupt the host kernel's shadow-page state. Researcher Hyunwoo Kim discovered t…
