CVE-2026-62432

A flaw was found in Xen. A timing issue, known as a race condition, exists in the event channel handling mechanism. This occurs when the system attempts to expand event channels without properly securing access, allowing another operation to interfere. This can lead to the system attempting to...

CVE-2026-64300

A flaw was found in the Linux kernel's perf/aux subsystem. A use-after-free UAF vulnerability exists in the maprange function due to a race condition. This can occur when two performance events share a ring buffer, allowing a local attacker to map a memory page that has already been freed...

CVE-2026-51261

Rejected reason: DO NOT USE THIS CVE RECORD. ConsultIDs: none. Reason: This record was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none...

CVE-2026-62436

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, ...

CVE-2026-62432

The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOPreset, resulting in dereferencing a NULL pointer...

CVE-2026-62430

Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usages of the index didn't take the necessary locking to avoid concurrent changes. As a result, a guest could change the index after it being checked,...

CVE-2026-62432

The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOPreset, resulting in dereferencing a NULL pointer...

CVE-2026-64233

A flaw was found in the Linux kernel's USB Video Class UVC gadget driver. A privileged local user can exploit a race condition during the binding of a UVC function by concurrently removing an extension subdirectory. This can lead to a use-after-free vulnerability, potentially causing system...

CVE-2026-62432

The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOPreset, resulting in dereferencing a NULL pointer...

CVE-2026-62432

CVE-2026-62432: The EVTCHNOP_expand_array hypercall in Xen signals a race with EVTCHNOP_reset when checking FIFO event channels, because the correct lock is not held, leading to potential dereference of a NULL pointer. Affected: Xen hypervisor interfaces referenced in the NVD entry and mirrored i...

CVE-2026-62432 evtchn: Race between FIFO expand and reset

The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOPreset, resulting in dereferencing a NULL pointer...

CVE-2026-62432 evtchn: Race between FIFO expand and reset

The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOPreset, resulting in dereferencing a NULL pointer...

EUVD-2026-49785

The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOPreset, resulting in dereferencing a NULL pointer...

CVE-2026-62429 vNUMA domain cleanup may race other operations

Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already started. The cleaning up of that configuration information is not synchronized with its retrieval by a device model controlling the guest...

CVE-2026-62435 grant-table: version change racing with other operations

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, ...

CVE-2026-62436

CVE-2026-62436 describes a race in Xen's Grant Table handling when switching between v2 and v1. The issue arises because, during the transition, the shared grant entry structure changes but the lock is intermittently released. Code that drops and re-acquires the grant table lock may wrongly assum...

CVE-2026-62435

CVE-2026-62435 : A race in grant-table handling during version switching in Xen grant-table v1→v2 can occur when the code temporarily drops and re-acquires the grant-table lock, potentially allowing the switch-related properties to change while unlocked. Affected products involve XenServer/Xen co...

CVE-2026-62436 grant-table: version change racing with other operations

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, ...

CVE-2026-62435 grant-table: version change racing with other operations

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, ...

CVE-2026-62436 grant-table: version change racing with other operations

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, ...