Linux Kernel up to 7.2.5 sa2ul sa_ul_probe unusual condition

CVSS Meta Temp Score
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CTI Interest Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 7.2.5 and classified as very critical. This issue affects the function sa_ul_probe of the component sa2ul. Performing a manipulation results in unusual condition. This vulnerability is known as CVE-2026-93158. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 7.2.5. This affects the function sa_ul_probe of the component sa2ul. The manipulation with an unknown input leads to a unusual condition vulnerability. CWE is classifying the issue as CWE-754. The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: crypto: sa2ul - stop probe if context pool creation fails sa_ul_probe() calls sa_init_mem() to create the DMA pool used for security context buffers, but ignores its return value. If pool creation fails, probe still continues with DMA setup, algorithm registration and child population even though later request setup depends on that pool. Stop probing when sa_init_mem() fails, and route that failure to the PM cleanup path without attempting to destroy an uncreated DMA pool.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-93158 since 09/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/17/2026).

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 304dcd26bfc3ce6771c2bd3b7c0299dcfd5f4e06/9907426b438e4dbc8c45138bd440ad6d732d80b7/9a692a6a2b47328a36c8d80c7fbf81da16b6d6b1/04c46784ec249cac995e31f0691397b82bdaa5fd/f72c7837614a9705f8b3021828d49c9f095803ba/91ded4742fcde6ad415c4d8a20e5ea0dcdf4f73e/b68b35ed97d3e18edb9dea500d88420a95006742/d03f980a25853f6a380895119a572a3bb1194e8d is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.1
VulDB Temp Score: 8.7
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: Unusual condition
CWE: CWE-754
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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 304dcd26bfc3ce6771c2bd3b7c0299dcfd5f4e06/9907426b438e4dbc8c45138bd440ad6d732d80b7/9a692a6a2b47328a36c8d80c7fbf81da16b6d6b1/04c46784ec249cac995e31f0691397b82bdaa5fd/f72c7837614a9705f8b3021828d49c9f095803ba/91ded4742fcde6ad415c4d8a20e5ea0dcdf4f73e/b68b35ed97d3e18edb9dea500d88420a95006742/d03f980a25853f6a380895119a572a3bb1194e8d

Timelineinfo

09/17/2026 Advisory disclosed
09/17/2026 +0 days CVE reserved
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-93158 (🔒)
GCVE (CVE): GCVE-0-2026-93158
GCVE (VulDB): GCVE-100-407235

Entryinfo

Created: 09/17/2026 23:58
Changes: 09/17/2026 23:58 (59)
Complete: 🔍
Cache ID: 216::103

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