Linux Kernel up to 7.2.3 int1092 sar_probe memory leak

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00+

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.2.3. It has been classified as critical. Affected by this issue is the function sar_probe of the component int1092. This manipulation causes memory leak. The identification of this vulnerability is CVE-2026-89437. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 7.2.3 and classified as critical. Affected by this vulnerability is the function sar_probe of the component int1092. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: platform/x86: int1092: Fix potential memory leak in sar_probe() The memory allocated for device_mode_info in parse_package() called by sar_get_data() is not freed in some of the error paths in sar_probe(). Fix that by converting to use device managed allocations.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-89437 since 09/11/2026. The exploitation appears to be easy. The attack can be launched remotely. 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 09/12/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 7.2.4 or 7.3-rc1 eliminates this vulnerability. Applying the patch 582b82e573a059be9319bb16b84c45d0ef66f471/30c906cff490c3601ee9ff110fe8115fabe75fd4 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Memory leak
CWE: CWE-401 / CWE-404
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 7.2.4/7.3-rc1
Patch: 582b82e573a059be9319bb16b84c45d0ef66f471/30c906cff490c3601ee9ff110fe8115fabe75fd4

Timelineinfo

09/11/2026 CVE reserved
09/11/2026 +0 days VulDB entry created
09/12/2026 +0 days Advisory disclosed
09/12/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-89437 (🔒)
GCVE (CVE): GCVE-0-2026-89437
GCVE (VulDB): GCVE-100-402799

Entryinfo

Created: 09/12/2026 00:42
Changes: 09/12/2026 00:42 (59)
Complete: 🔍
Cache ID: 216::103

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