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NVD / CVE Program· CNA Linux

CVE-2025-40277: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.23% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af, 54d458b244893e47bda52ec3943fdfbc8d7d068b, 5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc; azl3 kernel 6.6.112.1-2 on Azure Linux 3.0 6.6.117.1-1.

Low priority for now. Upgrade to Linux Linux 32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af, 54d458b244893e47bda52ec3943fdfbc8d7d068b, 5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc; azl3 kernel 6.6.112.1-2 on Azure Linux 3.0 6.6.117.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE This data originates from userspace and is used in buffer offset calculations which could potentially overflow causing an out-of-bounds access.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Dec 6, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 14th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.3affected
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before e58559845021c3bad5e094219378b869157fad53affected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before 54d458b244893e47bda52ec3943fdfbc8d7d068baffected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before 709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173affected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before a3abb54c27b2c393c44362399777ad2f6e1ff17eaffected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before b5df9e06eed3df6a4f5c6f8453013b0cabb927b4affected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before 5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfcaffected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0affected · git
    • 8ce75f8ab9044fe11caaaf2b2c82471023212f9f and later · before 32b415a9dc2c212e809b7ebc2b14bc3fbda2b9afaffected · git
    • before 4.3not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.27.1.el10_16.12.0-124.27.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.27.1.el10_16.12.0-124.27.1.el10_1
AlmaLinux:8bpftoolbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernelbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-corebefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-cross-headersbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-debugbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-debug-corebefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-debug-develbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-develbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-docbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-headersbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-modulesbefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-modules-extrabefore 4.18.0-553.97.1.el8_104.18.0-553.97.1.el8_10
AlmaLinux:8kernel-rtbefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10
AlmaLinux:8kernel-rt-corebefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10
AlmaLinux:8kernel-rt-debugbefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-553.97.1.rt7.438.el8_104.18.0-553.97.1.rt7.438.el8_10

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-40275Dec 6, 2025 · ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd
    0Monitor
  • ← EarlierCVE-2025-40276Dec 6, 2025 · drm/panthor: Flush shmem writes before mapping buffers CPU-uncached
    29Monitor
  • Later →CVE-2025-40278Dec 6, 2025 · net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux32b415a9dc2c212e809b7ebc2b14bc3fbda2b9afVendor (CNA)
Linux Linux54d458b244893e47bda52ec3943fdfbc8d7d068bVendor (CNA)
Linux Linux5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfcVendor (CNA)
Linux Linux709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173Vendor (CNA)
Linux Linuxa3abb54c27b2c393c44362399777ad2f6e1ff17eVendor (CNA)
Linux Linuxb5df9e06eed3df6a4f5c6f8453013b0cabb927b4Vendor (CNA)
Linux Linuxe58559845021c3bad5e094219378b869157fad53Vendor (CNA)
Linux Linuxf3f3a8eb3f0ba799fae057091d8c67cca12d6fa0Vendor (CNA)
azl3 kernel 6.6.112.1-2 on Azure Linux 3.06.6.117.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:kernel5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-abi-stablelists6.12.0-124.27.1.el10_1 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-doc6.12.0-124.27.1.el10_1 · AlmaLinux:10Package registry (OSV)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-debug-devel0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-debug-devel-matched0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-debuginfo0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-devel0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-devel-matched0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-debug-debuginfo0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-debug-devel0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)

+10

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records