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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98970: drm/vc4: Free the BO cache size list on 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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 035ad1bc964f6698e9b06c26ffe94bcac08dadea, 27c17ca90202d2a20def0316fb9403971ac9dfa7, 2f19ddd4bf56a057dbf17e434a3c9ea45adaf7e8; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 035ad1bc964f6698e9b06c26ffe94bcac08dadea, 27c17ca90202d2a20def0316fb9403971ac9dfa7, 2f19ddd4bf56a057dbf17e434a3c9ea45adaf7e8; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1 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/vc4: Free the BO cache size list on teardown vc4_bo_cache_destroy() purges the cached BOs but never frees the size list, leaking it on every unbind.

—No exploit Fix available
Published
Oct 23, 2026
Updated
Oct 30, 2026
EPSS
0.2% · 11th 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 · 0.2%

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.

Follow CVE-2026-98970

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

    • 4.5affected
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 75f89ab8cb4c9f136af790cc5df1f88d2726953aaffected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 2f19ddd4bf56a057dbf17e434a3c9ea45adaf7e8affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 27c17ca90202d2a20def0316fb9403971ac9dfa7affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before bf2848e50bd73782c2942ec023b5b60231f16e9baffected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 035ad1bc964f6698e9b06c26ffe94bcac08dadeaaffected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before bea10b84e22efa22b005e8dba1a19df4e04a7649affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before 40870a0290cd913c9d94f98ed87ebe00dd091e53affected · git
    • c826a6e1064419f78855463cf29ce9e8b9d25bf4 and later · before b41ff8b529278216cba22a5dcdc93fea2a3a9619affected · git
    • before 4.5not 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:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.11-17.2.11-1

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-2026-98968Oct 23, 2026 · amt: send the relay's General Query directly from the receive path
    32Monitor
  • ← EarlierCVE-2026-98969Oct 23, 2026 · net/sched: em_text: reject unterminated algo before autoload
    0Monitor
  • Later →CVE-2026-98971Oct 23, 2026 · gpio: exar: initialize the ID before registering its cleanup
    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 Linux035ad1bc964f6698e9b06c26ffe94bcac08dadeaVendor (CNA)
Linux Linux27c17ca90202d2a20def0316fb9403971ac9dfa7Vendor (CNA)
Linux Linux2f19ddd4bf56a057dbf17e434a3c9ea45adaf7e8Vendor (CNA)
Linux Linux40870a0290cd913c9d94f98ed87ebe00dd091e53Vendor (CNA)
Linux Linux75f89ab8cb4c9f136af790cc5df1f88d2726953aVendor (CNA)
Linux Linuxb41ff8b529278216cba22a5dcdc93fea2a3a9619Vendor (CNA)
Linux Linuxbea10b84e22efa22b005e8dba1a19df4e04a7649Vendor (CNA)
Linux Linuxbf2848e50bd73782c2942ec023b5b60231f16e9bVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.159.1-1 on Azure Linux 3.06.6.161.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 7, 2026+15 d
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. Exploit maturity— → none
  2. 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