Linux Kernel up to 7.2.4 ov7740 ov7740_remove double free

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been classified as problematic. Affected by this issue is the function ov7740_remove of the component ov7740. The manipulation leads to double free. This vulnerability is referenced as CVE-2026-89887. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.4 and classified as problematic. This issue affects the function ov7740_remove of the component ov7740. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov7740: fix use-after-destroy in remove The ov7740_remove() function had a severe teardown order bug where it destroyed the driver's mutex before freeing the V4L2 control handler which relies on that mutex, leading to a use-after-destroy kernel panic. Furthermore, the driver explicitly called v4l2_ctrl_handler_free() and mutex_destroy() sequentially, but then called ov7740_free_controls() which invokes both of them a second time, resulting in a double-free. This patch fixes the issue by unregistering the subdevice first, and relying exclusively on ov7740_free_controls() to safely tear down the mutex and control handler in the correct order.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-89887 since 09/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/16/2026).

Upgrading to version 5.10.270, 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 9e4693436c7dcf8584002500ce4b434b79bbf9ed/81e9765878d3ac8ad18e3a683332b5d6bc3a0e33/8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e/7512838a19af0a284a58435292243fad21e57ff1/25e2505866c577db2661e4d431f0907c6ec9a3b4/af81f35e4f429e769b784754e1aa4d7a922470ac/09453b467990e8ef8fe09f45a685f9a625248d33/5d1b3dea5a44124bab6c14a2d71b977dabed54e7 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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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
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: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.51/7.2.5/7.3-rc1
Patch: 9e4693436c7dcf8584002500ce4b434b79bbf9ed/81e9765878d3ac8ad18e3a683332b5d6bc3a0e33/8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e/7512838a19af0a284a58435292243fad21e57ff1/25e2505866c577db2661e4d431f0907c6ec9a3b4/af81f35e4f429e769b784754e1aa4d7a922470ac/09453b467990e8ef8fe09f45a685f9a625248d33/5d1b3dea5a44124bab6c14a2d71b977dabed54e7

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-2026-89887 (🔒)
GCVE (CVE): GCVE-0-2026-89887
GCVE (VulDB): GCVE-100-405725

Entryinfo

Created: 09/16/2026 14:15
Changes: 09/16/2026 14:15 (59)
Complete: 🔍
Cache ID: 216::103

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