CVE-2026-74452

Local kernel memory corruption via oversized firmware section

Published Aug 15, 2026 · Updated Aug 15, 2026

Heap buffer overflow in the Linux kernel panthor driver 6.10 allows local users to corrupt kernel memory via crafted GPU firmware. The panthor_fw_load_section_entry() function subtracts untrusted firmware offsets without checking the result against section_size, and panthor_fw_init_section_mem() uses the oversized length in memcpy and an underflowable memset. Low-privileged local access and a system using the Panthor GPU driver are required; the overwrite can crash the kernel or compromise protected kernel data.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the Linux kernel panthor driver 6.10 allows local users to corrupt kernel memory via crafted GPU firmware. The panthor_fw_load_section_entry() function subtracts untrusted firmware offsets without checking the result against section_size, and panthor_fw_init_section_mem() uses the oversized length in memcpy and an underflowable memset. Low-privileged local access and a system using the Panthor GPU driver are required; the overwrite can crash the kernel or compromise protected kernel data.

The record

CVE
CVE-2026-74452
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2718d91816eeed03c09c8abe872e45f59078768c <0e57165ca025a67d8dfd17efd2765fdd4925fdab
  2. Affected versionversion=2718d91816eeed03c09c8abe872e45f59078768c <2a761b9be5863e1d26a584f0c2d1e114a684ed9a
  3. Affected versionversion=2718d91816eeed03c09c8abe872e45f59078768c <7f4674d986c15c74327cb6ac6e2e2afecf061e04
  4. Affected versionversion=2718d91816eeed03c09c8abe872e45f59078768c <a3caaa06809248b996254be5b47e10804a3494e2
  5. Affected versionversion=6.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2718d91816eeed03c09c8abe872e45f59078768c <0e57165ca025a67d8dfd17efd2765fdd4925fdab; version=2718d91816eeed03c09c8abe872e45f59078768c <2a761b9be5863e1d26a584f0c2d1e114a684ed9a; version=2718d91816eeed03c09c8abe872e45f59078768c <7f4674d986c15c74327cb6ac6e2e2afecf061e04; version=2718d91816eeed03c09c8abe872e45f59078768c <a3caaa06809248b996254be5b47e10804a3494e2; version=6.10

Published CVSS scores

7.8CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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