CVE-2026-80594

Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing

State: Published
Severity: Not scored
Published: Aug 28, 2026
Updated: Aug 28, 2026
Reserved: Aug 26, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	628329d52474323938a03826941e166bc7c8eff4 to before 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28Affected 628329d52474323938a03826941e166bc7c8eff4 to before 6314bd9e2a6b3362998dc85485dd4b0f133a3532Affected 628329d52474323938a03826941e166bc7c8eff4 to before 76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32Affected 628329d52474323938a03826941e166bc7c8eff4 to before e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295Affected 628329d52474323938a03826941e166bc7c8eff4 to before b847f2725ef47a26b3d01eca3d54fd811e5a544dAffected 628329d52474323938a03826941e166bc7c8eff4 to before 383934c249a9817d242d02d30bfbc8defbf0d533Affected 628329d52474323938a03826941e166bc7c8eff4 to before bbbe31486cf2d12177462e4a814244c2597c9849Affected 628329d52474323938a03826941e166bc7c8eff4 to before d4579af29e67ca8722db0a1194227f8015c8981dAffected
LinuxLinux	3.10Affected before 3.10Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

628329d52474323938a03826941e166bc7c8eff4 to before 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28Affected
628329d52474323938a03826941e166bc7c8eff4 to before 6314bd9e2a6b3362998dc85485dd4b0f133a3532Affected
628329d52474323938a03826941e166bc7c8eff4 to before 76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32Affected
628329d52474323938a03826941e166bc7c8eff4 to before e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295Affected
628329d52474323938a03826941e166bc7c8eff4 to before b847f2725ef47a26b3d01eca3d54fd811e5a544dAffected
628329d52474323938a03826941e166bc7c8eff4 to before 383934c249a9817d242d02d30bfbc8defbf0d533Affected
628329d52474323938a03826941e166bc7c8eff4 to before bbbe31486cf2d12177462e4a814244c2597c9849Affected
628329d52474323938a03826941e166bc7c8eff4 to before d4579af29e67ca8722db0a1194227f8015c8981dAffected

LinuxLinux

3.10Affected
before 3.10Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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