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NVD / CVE Program· CNA Linux

CVE-2026-53068: drm/komeda: fix integer overflow in AFBC framebuffer size check

HighCVSS 7.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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 02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583, 779ec12c85c9e4547519e3903a371a3b26a289de, 8165e8b28fdf392c2c7412518d602b4f193812a8; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.143.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583, 779ec12c85c9e4547519e3903a371a3b26a289de, 8165e8b28fdf392c2c7412518d602b4f193812a8; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.143.1-1 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/komeda: fix integer overflow in AFBC framebuffer size check The AFBC framebuffer size validation calculates the minimum required buffer size by adding the AFBC payload size to the framebuffer offset. This addition is performed without checking for integer overflow. If the addition oveflows, the size check may incorrectly succed and allow userspace to provide an undersized drm_gem_object, potentially leading to out-of-bounds memory access. Add usage of check_add_overflow() to safely compute the minimum required size and reject the framebuffer if an overflow is detected. This makes the AFBC size validation more robust against malformed. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Published
Jun 24, 2026
Updated
Aug 5, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.1
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.

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  • 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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Follow CVE-2026-53068

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

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

    • 5.3affected
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7affected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before e27b58095d7d3ac72f230e318838dee956258460affected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before 02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583affected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before d8a541906860aa3519b1874780d933c766918a7caffected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before 8165e8b28fdf392c2c7412518d602b4f193812a8affected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before fe1f80f8f6e8611ac6349b9d464e8750443390cfaffected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before 872d923b852705054bc099af663da862fdc1097daffected · git
    • 65ad2392dd6d1691db93e82b08d3311298b9d64a and later · before 779ec12c85c9e4547519e3903a371a3b26a289deaffected · git
    • before 5.3not affected · semver
Affected versions · NVD (7)

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

  • linux linux kernel5.3 and later · before 5.10.258
  • linux linux kernel5.11 and later · before 5.15.209
  • linux linux kernel5.16 and later · before 6.1.175
  • linux linux kernel6.2 and later · before 6.6.141
  • linux linux kernel6.7 and later · before 6.12.91
  • linux linux kernel6.13 and later · before 6.18.33
  • linux linux kernel6.19 and later · before 7.0.10

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.94-16.12.94-1
Debian:14linuxbefore 7.0.10-17.0.10-1

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-2026-53066Jun 24, 2026 · drm/sun4i: backend: fix error pointer dereference
    22Monitor
  • ← EarlierCVE-2026-53067Jun 24, 2026 · PCI: endpoint: pci-ep-msi: Fix error unwind and prevent double alloc
    31Monitor
  • Later →CVE-2026-53077Jun 24, 2026 · net/rds: Restrict use of RDS/IB to the initial network namespace
    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 Linux02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583Vendor (CNA)
Linux Linux779ec12c85c9e4547519e3903a371a3b26a289deVendor (CNA)
Linux Linux8165e8b28fdf392c2c7412518d602b4f193812a8Vendor (CNA)
Linux Linux872d923b852705054bc099af663da862fdc1097dVendor (CNA)
Linux Linuxa3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7Vendor (CNA)
Linux Linuxd8a541906860aa3519b1874780d933c766918a7cVendor (CNA)
Linux Linuxe27b58095d7d3ac72f230e318838dee956258460Vendor (CNA)
Linux Linuxfe1f80f8f6e8611ac6349b9d464e8750443390cfVendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.143.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.176-1 · 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.

Variant candidates

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

  • CVE-2026-4632515 days apartRDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE
    39Monitor
  • CVE-2026-4603928 days apartrxgk: Fix potential integer overflow in length check
    39Monitor
  • CVE-2026-4334147 days apartnet/ipv6: ioam6: prevent schema length wraparound in trace fill
    39Monitor
  • CVE-2026-3163361 days apartrxrpc: Fix integer overflow in rxgk_verify_response()
    39Monitor
  • CVE-2026-3164961 days apartnet: stmmac: fix integer underflow in chain mode
    39Monitor
  • CVE-2026-3165961 days apartbatman-adv: reject oversized global TT response buffers
    39Monitor

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

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
none
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
None
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

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

ATT&CK techniques

—

References

Show all references (7 more)

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

All records