CVE-2025-38679

media: venus: Fix OOB read due to missing payload bound check

HIGH
7.1
CVSS Score
Published: September 4, 2025 at 03:32 PM UTC
Updated: October 19, 2026 at 09:10 PM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxSIMATIC CN 4100

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Severity
HIGH7.1
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: media: venus: Fix OOB read due to missing payload bound check Currently, The event_seq_changed() handler processes a variable number of properties sent by the firmware. The number of properties is indicated by the firmware and used to iterate over the payload. However, the payload size is not being validated against the actual message length. This can lead to out-of-bounds memory access if the firmware provides a property count that exceeds the data available in the payload. Such a condition can result in kernel crashes or potential information leaks if memory beyond the buffer is accessed. Fix this by properly validating the remaining size of the payload before each property access and updating bounds accordingly as properties are parsed. This ensures that property parsing is safely bounded within the received message buffer and protects against malformed or malicious firmware behavior.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.13 ≤ v < 6.1.1496.13 ≤ v < 6.15.116.16 ≤ v < 6.16.26.2 ≤ v < 6.6.1036.7 ≤ v < 6.12.434.139c2845e8fe4fcab942929480203f504a6e0a114
Vendor states this is fixed in 06d6770ff0d8cc8dfd392329a8cc03e2a83e7289 (fixed)
Vendor states this is fixed in 6f08bfb5805637419902f3d70069fe17a404545b (fixed)
Vendor states this is fixed in 8f274e2b05fdae7a53cee83979202b5ecb49035c (fixed)
Vendor states this is fixed in a3eef5847603cd8a4110587907988c3f93c9605a (fixed)
Vendor states this is fixed in bed4921055dd7bb4d2eea2729852ae18cf97a2c6 (fixed)
Vendor states this is fixed in c956c3758510b448b3d4d10d1da8230e8c9bf668 (fixed)
Vendor states this is fixed in 4.13 (unaffected)
Vendor states this is fixed in 6.1.149 (unaffected)
Vendor states this is fixed in 6.12.43 (unaffected)
Vendor states this is fixed in 6.15.11 (unaffected)
Vendor states this is fixed in 6.16.2 (unaffected)
Vendor states this is fixed in 6.17 (unaffected)
Vendor states this is fixed in 6.6.103 (unaffected)
v < V5.0
Affected range stops below V5.0, so it looks safe — our inference, not a vendor statement

References (8)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/06d6770ff0d8cc8dfd392329a8cc03e2a83e7289
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6f08bfb5805637419902f3d70069fe17a404545b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8f274e2b05fdae7a53cee83979202b5ecb49035c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a3eef5847603cd8a4110587907988c3f93c9605a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bed4921055dd7bb4d2eea2729852ae18cf97a2c6
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c956c3758510b448b3d4d10d1da8230e8c9bf668
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-032379.html

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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