SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2014-8594

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation…

MEDIUM 5.4EPSS 2.22%

Does this matter?

Lower severity and a low EPSS score (2.22%). Track it; it rarely justifies an emergency change on its own.

Description

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).

CVSS 2.0
5.4 MEDIUMAV:N/AC:H/Au:N/C:N/I:N/A:C
EPSS
2.22% probability · 82th percentile
CISA KEV
Not listed
Weakness
CWE-20
Affected
opensuse/opensuse · debian/debian linux · xen/xen
Source
cve@mitre.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.