01 Record

CVE-2022-48943

KVM: x86/mmu: make apf token non-zero to fix bug

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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02 Description

KVM: x86/mmu: make apf token non-zero to fix bug

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.2% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-08-22 03:30Z2 YR AGO

Last updated

2026-08-05 08:53Z1 MO AGO

Reserved

2024-08-22

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.2

Document digest

f9a98f220c9ffd690876e7a7e496a95001c24a3b994309de9c3a6722258acabe

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux2635b5c4a0e407b84f68e188c719f28ba0e9ae1b to < 72fdfc75d4217b32363cc80def3de2cb3fef3f02, 2635b5c4a0e407b84f68e188c719f28ba0e9ae1b to < 4c3644b6c96c5daa5149e5abddc07234eea47c7c, 2635b5c4a0e407b84f68e188c719f28ba0e9ae1b to < 62040f5cd7d937de547836e747b6aa8212fec573, 2635b5c4a0e407b84f68e188c719f28ba0e9ae1b to < 6f3c1fc53d86d580d8d6d749c4af23705e4f6f79, 5.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/72fdfc75d4217b32363cc80def3de2cb3fef3f02
git.kernel.orghttps://git.kernel.org/stable/c/4c3644b6c96c5daa5149e5abddc07234eea47c7c
git.kernel.orghttps://git.kernel.org/stable/c/62040f5cd7d937de547836e747b6aa8212fec573
git.kernel.orghttps://git.kernel.org/stable/c/6f3c1fc53d86d580d8d6d749c4af23705e4f6f79

01 Record index

CVE-2022-48943

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2022-48943

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References