Linux Kernel up to 7.2.4 ov02a10 ov02a10_check_hwcfg use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been declared as very critical. This affects the function ov02a10_check_hwcfg of the component ov02a10. The manipulation results in use after free. This vulnerability is identified as CVE-2026-89888. The attack is only possible with local access. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been classified as very critical. Affected is the function ov02a10_check_hwcfg of the component ov02a10. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov02a10: fix endpoint parsing use-after-free The ov02a10_check_hwcfg() function calls fwnode_handle_put(ep) immediately after allocating and parsing the endpoint. However, it subsequently calls fwnode_property_read_u32() using the same 'ep' handle, leading to a potential use-after-free. Additionally, reading the optional 'ovti,mipi-clock-voltage' property used to overwrite the 'ret' variable. If the property was missing, 'ret' would become negative, and this failure code would be incorrectly returned at the end of the function, causing probe to fail entirely. Fix the use-after-free by moving fwnode_property_read_u32() before the endpoint is parsed and freed. Avoid the error leak by not assigning the result of fwnode_property_read_u32() to 'ret'.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-89888 since 09/11/2026. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation needs additional levels of successful authentication. 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 09/16/2026).

Upgrading to version 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5 or 7.3-rc1 eliminates this vulnerability. Applying the patch 9de48ba68f56de9fe20ebd3f9728d22af25f9a91/8ddb3b69f67b0632ff3830da18de3e8dcaf5884b/4c2988bf1ad2753240a38db10ce23e87ec542f8f/213b2489130357c8d3e8d4fb2bdab88791ce3185/90f9b421fc6d4f2edab7521efdb1e58571468d33/6e13784452785cd8402b228bea53bc6a027ade84/94971ba0592ca77ec99b292226a4b398763315b8 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: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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 5.15.221/6.1.188/6.6.157/6.12.110/6.18.51/7.2.5/7.3-rc1
Patch: 9de48ba68f56de9fe20ebd3f9728d22af25f9a91/8ddb3b69f67b0632ff3830da18de3e8dcaf5884b/4c2988bf1ad2753240a38db10ce23e87ec542f8f/213b2489130357c8d3e8d4fb2bdab88791ce3185/90f9b421fc6d4f2edab7521efdb1e58571468d33/6e13784452785cd8402b228bea53bc6a027ade84/94971ba0592ca77ec99b292226a4b398763315b8

Timelineinfo

09/11/2026 CVE reserved
09/16/2026 +5 days Advisory disclosed
09/16/2026 +0 days VulDB entry created
09/16/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-89888 (🔒)
GCVE (CVE): GCVE-0-2026-89888
GCVE (VulDB): GCVE-100-405726

Entryinfo

Created: 09/16/2026 14:16
Changes: 09/16/2026 14:16 (59)
Complete: 🔍
Cache ID: 216::103

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