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NVD / CVE Program· CNA Linux

CVE-2024-36944: Reapply "drm/qxl: simplify qxl_fence_wait"

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.16% (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 148ed8b4d64f94ab079c8f0d88c3f444db97ba97, 3628e0383dd349f02f882e612ab6184e4bb3dc10, 3dfe35d8683daf9ba69278643efbabe40000bbf6.

Low priority for now. Upgrade to Linux Linux 148ed8b4d64f94ab079c8f0d88c3f444db97ba97, 3628e0383dd349f02f882e612ab6184e4bb3dc10, 3dfe35d8683daf9ba69278643efbabe40000bbf6 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: Reapply "drm/qxl: simplify qxl_fence_wait" This reverts commit 07ed11afb68d94eadd4ffc082b97c2331307c5ea. Stephen Rostedt reports: "I went to run my tests on my VMs and the tests hung on boot up. Unfortunately, the most I ever got out was: [ 93.607888] Testing event system initcall: OK [ 93.667730] Running tests on all trace events: [ 93.669757] Testing all events: OK [ 95.631064] ------------[ cut here ]------------ Timed out after 60 seconds" and further debugging points to a possible circular locking dependency between the console_owner locking and the worker pool locking. Reverting the commit allows Steve's VM to boot to completion again. [ This may obviously result in the "[TTM] Buffer eviction failed" messages again, which was the reason for that original revert. But at this point this seems preferable to a non-booting system... ]

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 30, 2024
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile

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 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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

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  • 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.

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 kernel5.15.156 and later · before 5.15.159
  • linux linux kernel6.1.87 and later · before 6.1.91
  • linux linux kernel6.6.28 and later · before 6.6.31
  • linux linux kernel6.8.7 and later · before 6.8.10
  • linux linux kernel6.9

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

    • 8d278fc34cdd8a44e995fa93dfd31d619a2e1fe6 and later · before 4a89ac4b0921c4ea21eb1b4cf3a469a91bacfceaaffected · git
    • 84fb60063509e462e39c0e097c7d6dbb71c95967 and later · before b548c53bc3ab83dc6fc86c8e840f013b2032267aaffected · git
    • 42cbe04a5c77da74fb7161b0ae63f1f6e105d633 and later · before 148ed8b4d64f94ab079c8f0d88c3f444db97ba97affected · git
    • 13ab5db42a593f9904acc39055ee3ae75963fc88 and later · before 3dfe35d8683daf9ba69278643efbabe40000bbf6affected · git
    • 07ed11afb68d94eadd4ffc082b97c2331307c5ea and later · before 3628e0383dd349f02f882e612ab6184e4bb3dc10affected · git
    • 5.15.156 and later · before 5.15.159affected · semver
    • 6.1.87 and later · before 6.1.91affected · semver
    • 6.6.28 and later · before 6.6.31affected · semver
    • 6.8.7 and later · before 6.8.10affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.94-16.1.94-1
Debian:13linuxbefore 6.8.11-16.8.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • 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

Published before and after this one in the same product

  • ← EarlierCVE-2024-36941May 30, 2024 · wifi: nl80211: don't free NULL coalescing rule
    22Monitor
  • ← EarlierCVE-2024-36943May 30, 2024 · fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan
    18Monitor
  • Later →CVE-2024-36945May 30, 2024 · net/smc: fix neighbour and rtable leak in smc_ib_find_route()
    22Monitor

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 Linux148ed8b4d64f94ab079c8f0d88c3f444db97ba97Vendor (CNA)
Linux Linux3628e0383dd349f02f882e612ab6184e4bb3dc10Vendor (CNA)
Linux Linux3dfe35d8683daf9ba69278643efbabe40000bbf6Vendor (CNA)
Linux Linux4a89ac4b0921c4ea21eb1b4cf3a469a91bacfceaVendor (CNA)
Linux Linux5.15.159Vendor (CNA)
Linux Linux6.1.91Vendor (CNA)
Linux Linux6.6.31Vendor (CNA)
Linux Linux6.8.10Vendor (CNA)
Linux Linuxb548c53bc3ab83dc6fc86c8e840f013b2032267aVendor (CNA)
debian:linux6.1.94-1 · 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-667 · Improper Locking

CVSS vector

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

Change log

  1. Fix✗ → ✓

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

References

Show all references (4 more)

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

All records