Linux Kernel up to 7.1.4 ims-pcu ims_pcu_get_cdc_union_desc infinite loop

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5.3	$0-$5k	0.65

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 7.1.4. This issue affects the function ims_pcu_get_cdc_union_desc of the component ims-pcu. Executing a manipulation can lead to infinite loop. This vulnerability is tracked as CVE-2026-80594. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.1.4. This vulnerability affects the function ims_pcu_get_cdc_union_desc of the component ims-pcu. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing The driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc() by iterating through the extra descriptor data. However, it does not verify that the bLength of each descriptor is at least 2. A malicious device could provide a descriptor with bLength = 0, leading to an infinite loop in the driver. Add a check to ensure bLength is at least 2 before proceeding with parsing.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-80594 since 08/26/2026. The exploitation appears to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40 or 7.1.5 eliminates this vulnerability. Applying the patch 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28/6314bd9e2a6b3362998dc85485dd4b0f133a3532/76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32/e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295/b847f2725ef47a26b3d01eca3d54fd811e5a544d/383934c249a9817d242d02d30bfbc8defbf0d533/bbbe31486cf2d12177462e4a814244c2597c9849/d4579af29e67ca8722db0a1194227f8015c8981d is able to eliminate this problem.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.260
• 5.15.211
• 6.1.177
• 6.6.144
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
• 6.12.6
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• 6.12.77
• 6.12.78
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• 6.12.80
• 6.12.81
• 6.12.82
• 6.12.83
• 6.12.84
• 6.12.85
• 6.12.86
• 6.12.87
• 6.12.88
• 6.12.89
• 6.12.90
• 6.12.91
• 6.12.92
• 6.12.93
• 6.12.94
• 6.12.95
• 6.12.96
• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
• 6.18.9
• 6.18.10
• 6.18.11
• 6.18.12
• 6.18.13
• 6.18.14
• 6.18.15
• 6.18.16
• 6.18.17
• 6.18.18
• 6.18.19
• 6.18.20
• 6.18.21
• 6.18.22
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• 6.18.24
• 6.18.25
• 6.18.26
• 6.18.27
• 6.18.28
• 6.18.29
• 6.18.30
• 6.18.31
• 6.18.32
• 6.18.33
• 6.18.34
• 6.18.35
• 6.18.36
• 6.18.37
• 6.18.38
• 6.18.39
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.97/6.18.40/7.1.5
Patch: 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28/6314bd9e2a6b3362998dc85485dd4b0f133a3532/76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32/e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295/b847f2725ef47a26b3d01eca3d54fd811e5a544d/383934c249a9817d242d02d30bfbc8defbf0d533/bbbe31486cf2d12177462e4a814244c2597c9849/d4579af29e67ca8722db0a1194227f8015c8981d

Timelineinfo

08/26/2026 CVE reserved
08/28/2026 +2 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
08/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80594 (🔒)
GCVE (CVE): GCVE-0-2026-80594
GCVE (VulDB): GCVE-100-396532

Entryinfo

Created: 08/28/2026 09:58
Changes: 08/28/2026 09:58 (59)
Complete: 🔍
Cache ID: 216::103

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