CVE-2025-38408

genirq/irq_sim: Initialize work context pointers properly

MEDIUM
5.5
CVSS Score
Published: July 25, 2025 at 01:20 PM UTC
Updated: October 15, 2026 at 10:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: genirq/irq_sim: Initialize work context pointers properly Initialize `ops` member's pointers properly by using kzalloc() instead of kmalloc() when allocating the simulation work context. Otherwise the pointers contain random content leading to invalid dereferencing.

Affected

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

5.8 ≤ v < 6.12.376.13 ≤ v < 6.15.6337cbeb2c13eb4cab84f576fd402d7ae4ed31ae16.166.16 rc16.16 rc2
Vendor states this is fixed in 186df821de0f34490ed5fc0861243748b2483861 (fixed)
Vendor states this is fixed in 19bd7597858dd15802c1d99fcc38e528f469080a (fixed)
Vendor states this is fixed in 7f73d1def72532bac4d55ea8838f457a6bed955c (fixed)
Vendor states this is fixed in 8a2277a3c9e4cc5398f80821afe7ecbe9bdf2819 (fixed)
Vendor states this is fixed in c71aa4bb528ae6f8fd7577a0a39e5a03c60b04fb (fixed)
Vendor states this is fixed in ec3656a8cb428d763def32bc2fa695f94be23629 (fixed)
Vendor states this is fixed in 5.15.199 (unaffected)
Vendor states this is fixed in 5.8 (unaffected)
Vendor states this is fixed in 6.1.162 (unaffected)
Vendor states this is fixed in 6.12.37 (unaffected)
Vendor states this is fixed in 6.15.6 (unaffected)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.6.120 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-476

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