Linux Kernel up to 7.1.8 evdev evdev_pass_values information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.1.8. It has been declared as problematic. This affects the function evdev_pass_values of the component evdev. Such manipulation leads to information disclosure. This vulnerability is traded as CVE-2026-74673. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.1.8 and classified as problematic. Affected by this issue is the function evdev_pass_values of the component evdev. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: Input: evdev - fix information leak in evdev_pass_values() In evdev_pass_values(), the input_event structure is allocated on the kernel stack and populated field-by-field. However, it is never fully initialized. On architectures where struct input_event contains explicit or implicit padding (such as the 32-bit __pad field on SPARC64), these padding bytes are left uninitialized. When this event structure is subsequently passed to the client buffer and later copied to userspace, the uninitialized padding bytes leak kernel stack memory, potentially exposing sensitive information. Similar issues exist in __evdev_queue_syn_dropped and __pass_event. Fix this by explicitly zeroing the entire event structure with memset() before populating its fields. This ensures all padding bytes are cleared before the data crosses the security boundary.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-74673 since 08/15/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 5.10.265, 5.15.216, 6.1.183, 6.6.152, 6.12.104, 6.18.45 or 7.1.9 eliminates this vulnerability. Applying the patch d2e3839419ac4047835762c4d7712bda1101b57e/c6d5fa46c1ee25d068fc730fd377f0f54188d290/e748811d9b80a3e101110ff4b3c612e5fca54d98/06a286b320236508d02ab2ccc9496352748652a8/7d17e9454a9af3ec7aebb88b41a9deedd5b19a6b/bd3c4108a56de34380edab670065e86283cb3029/7e55ca1080f09d9f7112c7f20ac31f682c1f2374/90f305f2c7a30257c683e13f4bf7c798eea992a0 is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.265/5.15.216/6.1.183/6.6.152/6.12.104/6.18.45/7.1.9
Patch: d2e3839419ac4047835762c4d7712bda1101b57e/c6d5fa46c1ee25d068fc730fd377f0f54188d290/e748811d9b80a3e101110ff4b3c612e5fca54d98/06a286b320236508d02ab2ccc9496352748652a8/7d17e9454a9af3ec7aebb88b41a9deedd5b19a6b/bd3c4108a56de34380edab670065e86283cb3029/7e55ca1080f09d9f7112c7f20ac31f682c1f2374/90f305f2c7a30257c683e13f4bf7c798eea992a0

Timelineinfo

08/15/2026 CVE reserved
08/22/2026 +7 days Advisory disclosed
08/22/2026 +0 days VulDB entry created
08/22/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-74673 (🔒)
GCVE (CVE): GCVE-0-2026-74673
GCVE (VulDB): GCVE-100-394484

Entryinfo

Created: 08/22/2026 19:01
Changes: 08/22/2026 19:01 (59)
Complete: 🔍
Cache ID: 216::103

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