CVE-2026-43440

net/mana: Null service_wq on setup error to prevent double destroy

HIGH
7.8
CVSS Score
Published: May 8, 2026 at 02:22 PM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on setup error to prevent double destroy In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup.

Affected

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

6.18.16 ≤ v < 6.18.196.19.6 ≤ v < 6.19.96.18.166.19.67.0 rc27.0 rc3a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77ef975a0955276579e2176a134366ed586071c7c6afa3c2f8d9152344a478abb847081c1b5f84a94f5
Vendor states this is fixed in 59489ce60d7412ed82fb1d8002faa3102dcd4916 (fixed)
Vendor states this is fixed in 6c92392602b451e3869f15ab685f8f650e942b13 (fixed)
Vendor states this is fixed in 87c2302813abc55c46485711a678e3c312b00666 (fixed)
Affected range stops below 6.18.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.19.9, so it looks safe — our inference, not a vendor statement

CVSS

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

Quick Info

StatusANALYZED
CWE
CWE-416

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