Linux Kernel up to 7.2.4 cedrus cedrus_init_ctrls memory leak

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.44+

Summaryinfo

A vulnerability has been found in Linux Kernel up to 7.2.4 and classified as critical. This affects the function cedrus_init_ctrls of the component cedrus. The manipulation leads to memory leak. This vulnerability is uniquely identified as CVE-2026-89896. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been rated as critical. This issue affects the function cedrus_init_ctrls of the component cedrus. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: media: cedrus: fix memory leak in cedrus_init_ctrls() In cedrus_init_ctrls(), the V4L2 control handler is initialized before allocating memory for ctx->ctrls. If this allocation fails, the function returns -ENOMEM without freeing the previously allocated handler resources, leading to a memory leak. Fix this by calling v4l2_ctrl_handler_free() on the ctx->ctrls allocation failure path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have an Allwinner SoC or board with a Cedrus VPU available to test with, no runtime testing was able to be performed.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-89896 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). MITRE ATT&CK project uses the attack technique T1499 for this issue.

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 6fabacc3b79a528450aef4c32464da2ec681049e/729a1ffab968b3c493f61d1cd683f5bafec500ea/ce5693b6e3a693fcdc3800af309363f6250104c8/22441be29ec27c693f40c1ef499093275ef529d1/79fd0b0161506fc9507bf7a6fe4c975a857a5be8/f78cf36cabf911da348ea80e4e9f430d74f6905c/81aa608ac3a56cdd4aab0bd12442ed529a24ba31/9df2fbe563194da1967a5db083442186c1323efe is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
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: 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 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: 6fabacc3b79a528450aef4c32464da2ec681049e/729a1ffab968b3c493f61d1cd683f5bafec500ea/ce5693b6e3a693fcdc3800af309363f6250104c8/22441be29ec27c693f40c1ef499093275ef529d1/79fd0b0161506fc9507bf7a6fe4c975a857a5be8/f78cf36cabf911da348ea80e4e9f430d74f6905c/81aa608ac3a56cdd4aab0bd12442ed529a24ba31/9df2fbe563194da1967a5db083442186c1323efe

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-2026-89896 (🔒)
GCVE (CVE): GCVE-0-2026-89896
GCVE (VulDB): GCVE-100-405737

Entryinfo

Created: 09/16/2026 14:24
Changes: 09/16/2026 14:24 (59)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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