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NVD / CVE Program· CNA Linux

CVE-2026-68233: drm/vc4: Shut down BO cache timer before teardown

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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).
  • Fixed version: Linux Linux 6273dd3ffb54ec581855b82ae77331b66028249c, 948cd4876dafbfab826384516df19fe813d9f1d1, a38f2724eb93a78ba250b01e0caf3468df4d3956; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 6273dd3ffb54ec581855b82ae77331b66028249c, 948cd4876dafbfab826384516df19fe813d9f1d1, a38f2724eb93a78ba250b01e0caf3468df4d3956; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes 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/vc4: Shut down BO cache timer before teardown The BO cache timer callback schedules time_work, and time_work can rearm the timer through vc4_bo_cache_free_old(). vc4_bo_cache_destroy() deletes the timer and then cancels the work, which does not break that cycle: the work being cancelled can rearm the timer, and the timer then queues work again after teardown. Use timer_shutdown_sync() instead, so the timer cannot be rearmed and the cycle ends with cancel_work_sync().

—No exploit Fix available
Published
Aug 10, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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

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  • 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

    • 4.5affected
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 948cd4876dafbfab826384516df19fe813d9f1d1affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before cf55c6f1b62a89bf365c48bf731ccf69340e3a16affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before e9264ee59bd94970b80b7548f693bccf0d4628daaffected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before a38f2724eb93a78ba250b01e0caf3468df4d3956affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before bac4c1a9af690b8635c6924872075c41d8763ed9affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 6273dd3ffb54ec581855b82ae77331b66028249caffected · git
    • before 4.5not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:14linuxbefore 7.1.6-17.1.6-1
openSUSE:Leap 16.0dtb-aarch64before 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-64kbbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-azurebefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-defaultbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-default-basebefore 6.12.0-160000.40.1.160000.2.296.12.0-160000.40.1.160000.2.29
openSUSE:Leap 16.0kernel-docsbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-kvmsmallbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-obs-buildbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-obs-qabefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-rtbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-sourcebefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-symsbefore 6.12.0-160000.40.16.12.0-160000.40.1
openSUSE:Leap 16.0kernel-zfcpdumpbefore 6.12.0-160000.40.16.12.0-160000.40.1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.336.14.12.14-122.336.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_89before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.336.14.12.14-122.336.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.336.14.12.14-122.336.1
SUSE:Linux Micro 6.0kernel-defaultbefore 6.4.0-159998.54.16.4.0-159998.54.1
SUSE:Linux Micro 6.0kernel-default-basebefore 6.4.0-159998.54.1.159998.21.406.4.0-159998.54.1.159998.21.40
SUSE:Linux Micro 6.0kernel-kvmsmallbefore 6.4.0-159998.54.16.4.0-159998.54.1
SUSE:Linux Micro 6.0kernel-sourcebefore 6.4.0-159998.54.16.4.0-159998.54.1
SUSE:Linux Micro 6.1kernel-default-basebefore 6.4.0-159998.54.1.159998.21.396.4.0-159998.54.1.159998.21.39

+7

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-2026-68213Aug 10, 2026 · media: rtl2832_sdr: Return queued buffers on start_streaming() failure
    31Monitor
  • ← EarlierCVE-2026-68216Aug 10, 2026 · media: pwc: Return queued buffers on start_streaming() failure
    31Monitor
  • Later →CVE-2026-68236Aug 10, 2026 · drm/amd/display: set new_stream to NULL after release
    31Monitor

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 Linux6273dd3ffb54ec581855b82ae77331b66028249cVendor (CNA)
Linux Linux948cd4876dafbfab826384516df19fe813d9f1d1Vendor (CNA)
Linux Linuxa38f2724eb93a78ba250b01e0caf3468df4d3956Vendor (CNA)
Linux Linuxbac4c1a9af690b8635c6924872075c41d8763ed9Vendor (CNA)
Linux Linuxcf55c6f1b62a89bf365c48bf731ccf69340e3a16Vendor (CNA)
Linux Linuxe9264ee59bd94970b80b7548f693bccf0d4628daVendor (CNA)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:linux7.1.6-1 · Debian:14Package registry (OSV)
opensuse:dtb-aarch646.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-64kb6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-azure6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default-base6.12.0-160000.40.1.160000.2.29 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-docs6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-kvmsmall6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-build6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-qa6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-rt6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-source6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-syms6.12.0-160000.40.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:kernel-64kb6.12.0-160000.40.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-default4.12.14-122.336.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-default6.4.0-159998.54.1 · SUSE:Linux Micro 6.0Package registry (OSV)
suse:kernel-default-base6.4.0-159998.54.1.159998.21.40 · SUSE:Linux Micro 6.0Package registry (OSV)
suse:kernel-kvmsmall6.4.0-159998.54.1 · SUSE:Linux Micro 6.0Package registry (OSV)
suse:kernel-obs-build6.12.0-160000.40.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-rt6.12.0-160000.40.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-source4.12.14-122.336.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-source6.4.0-159998.54.1 · SUSE:Linux Micro 6.0Package registry (OSV)

+3

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (5 more)

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

All records