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CVE-2022-50440· NVD / CVE Program· CNA Linux

drm/vmwgfx: Validate the box size for the snooped cursor

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate the box size for the snooped cursor Invalid userspace dma surface copies could potentially overflow the memcpy from the surface to the snooped image leading to crashes. To fix it the dimensions of the copybox have to be validated against the expected size of the snooped cursor.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 1, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 5th percentile
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Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

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

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

Noroxi analysis

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Affected systems

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel3.2 and later · before 4.9.337
  • linux linux kernel4.10 and later · before 4.14.303
  • linux linux kernel4.15 and later · before 4.19.270
  • linux linux kernel4.20 and later · before 5.4.229
  • linux linux kernel5.5 and later · before 5.10.163
  • linux linux kernel5.11 and later · before 5.15.87
  • linux linux kernel5.16 and later · before 6.0.18
  • linux linux kernel6.1 and later · before 6.1.4

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

    • 3.2affected
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before ee8d31836cbe7c26e207bfa0a4a726f0a25cfcf6affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 50d177f90b63ea4138560e500d92be5e4c928186affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 6b4e70a428b5a11f56db94047b68e144529fe512affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 94b283341f9f3f0ed56a360533766377a01540e0affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 439cbbc1519547f9a7b483f0de33b556ebfec901affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 6948e570f54f2044dd4da444b10471373a047eebaffected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 4d54d11b49860686331c58a00f733b16a93edfc4affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 622d527decaac0eb65512acada935a0fdc1d0202affected · git
    • 2ac863719e518ae1a8f328849e64ea26a222f079 and later · before 4cf949c7fafe21e085a4ee386bb2dade9067316eaffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now
  • CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
    77This week
  • CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
    77This week
  • CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
    77This week

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 Linux439cbbc1519547f9a7b483f0de33b556ebfec901Vendor (CNA)
Linux Linux4cf949c7fafe21e085a4ee386bb2dade9067316eVendor (CNA)
Linux Linux4d54d11b49860686331c58a00f733b16a93edfc4Vendor (CNA)
Linux Linux50d177f90b63ea4138560e500d92be5e4c928186Vendor (CNA)
Linux Linux622d527decaac0eb65512acada935a0fdc1d0202Vendor (CNA)
Linux Linux6948e570f54f2044dd4da444b10471373a047eebVendor (CNA)
Linux Linux6b4e70a428b5a11f56db94047b68e144529fe512Vendor (CNA)
Linux Linux94b283341f9f3f0ed56a360533766377a01540e0Vendor (CNA)
Linux Linuxee8d31836cbe7c26e207bfa0a4a726f0a25cfcf6Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-primary

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

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

All records