Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc2 s390/crypto ctr_aes_crypt/gcm_aes_crypt information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc2. Affected by this issue is the function ctr_aes_crypt/gcm_aes_crypt of the component s390/crypto. The manipulation results in information disclosure. This vulnerability is known as CVE-2026-97592. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc2. Affected is the function ctr_aes_crypt/gcm_aes_crypt of the component s390/crypto. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Fix missing scrub of temp buffers with AES ctr and gcm algorithm In function ctr_aes_crypt() there is a buffer used to process remaining bytes < AES_BLOCK_SIZE. This buffer was not scrubbed and thus could lead to expose of unwanted data. When the buffer is used explicitly scrub it at the end of the code block to avoid exposure of maybe sensitive data. In a similar way the function gcm_aes_crypt() hat an error path where the CPACF param block was not scrubbed. Instead of return early now these error paths go to end of function where explicit scrubbing is done. Similar with the buffers which are part of the gcm_sg_walk structs from the variables gw_in and gw_out.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-97592 since 09/24/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/25/2026). This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 6.12.111, 6.18.53, 7.2.7 or 7.3-rc3 eliminates this vulnerability. Applying the patch 11eca05d2062032e1f07d56be58ed0b99f4b1d63/8b90a47c4fba27bb4f2f086611742493629e9696/a83488cecb35f924b7541306ed84893bb9906196/8b7c3b6914f19caf648d05726a86af6326d3c2c6 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: No
Local: No
Remote: Yes

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 6.12.111/6.18.53/7.2.7/7.3-rc3
Patch: 11eca05d2062032e1f07d56be58ed0b99f4b1d63/8b90a47c4fba27bb4f2f086611742493629e9696/a83488cecb35f924b7541306ed84893bb9906196/8b7c3b6914f19caf648d05726a86af6326d3c2c6

Timelineinfo

09/24/2026 CVE reserved
09/25/2026 +1 days Advisory disclosed
09/25/2026 +0 days VulDB entry created
09/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-97592 (🔒)
GCVE (CVE): GCVE-0-2026-97592
GCVE (VulDB): GCVE-100-410070

Entryinfo

Created: 09/25/2026 14:20
Changes: 09/25/2026 14:20 (59)
Complete: 🔍
Cache ID: 216::103

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