In the Linux kernel, the following vulnerability has been resolved:

net: airoha: Fix potential use-after-free in airoha_ppe_deinit()

airoha_ppe_deinit() replaces the NPU pointer with NULL via
rcu_replace_pointer() but does not wait for existing RCU readers
to exit before calling ppe_deinit() and airoha_npu_put(). This can
cause a use-after-free if a reader in an RCU read-side critical
section still holds a reference to the NPU when it is freed.

The init path (airoha_ppe_init) already calls synchronize_rcu()
after rcu_assign_pointer(), but the deinit path introduced in
commit 6abcf751bc08 ("net: airoha: Fix schedule while atomic in
airoha_ppe_deinit()") omitted the matching barrier when switching
from rcu_read_lock()/rcu_dereference() to rcu_replace_pointer().

Add synchronize_rcu() before ppe_deinit() to ensure all existing
RCU readers have completed before the NPU resources are released.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
72f93dc6d1a6b157e0c3d247085c74935893cca0 affected < 46e3bed4b071095ecc9384a7b349e1908728531f
6abcf751bc084804a9e5b3051442e8a2ce67f48a affected < ad28c4f9e0eae4993cb3fde3e7cea330acd8b97c
6abcf751bc084804a9e5b3051442e8a2ce67f48a affected < 2484568a335cd7bda951c75b3a7d95ea36161ae7
6.18.6 affected < 6.18.42
Linux Linux affected
Version Status Constraints
6.19 affected —
0 unaffected < 6.19
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc5 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/2484568a335cd7bda951c75b3a7d95ea36161ae7 cve-icon
https://git.kernel.org/stable/c/46e3bed4b071095ecc9384a7b349e1908728531f cve-icon
https://git.kernel.org/stable/c/ad28c4f9e0eae4993cb3fde3e7cea330acd8b97c cve-icon
History

Mon, 10 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix potential use-after-free in airoha_ppe_deinit() airoha_ppe_deinit() replaces the NPU pointer with NULL via rcu_replace_pointer() but does not wait for existing RCU readers to exit before calling ppe_deinit() and airoha_npu_put(). This can cause a use-after-free if a reader in an RCU read-side critical section still holds a reference to the NPU when it is freed. The init path (airoha_ppe_init) already calls synchronize_rcu() after rcu_assign_pointer(), but the deinit path introduced in commit 6abcf751bc08 ("net: airoha: Fix schedule while atomic in airoha_ppe_deinit()") omitted the matching barrier when switching from rcu_read_lock()/rcu_dereference() to rcu_replace_pointer(). Add synchronize_rcu() before ppe_deinit() to ensure all existing RCU readers have completed before the NPU resources are released.
Title net: airoha: Fix potential use-after-free in airoha_ppe_deinit()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T12:03:08.525Z

Reserved: 2026-07-30T09:28:09.383Z

Link: CVE-2026-68332

cve-icon Vulnrichment

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cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-10T17:00:03Z

Weaknesses