Linux Kernel up to 7.2.4 sunxi-cir rc_register_device allocation of resources

CVSS Meta Temp Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 7.2.4. This issue affects the function rc_register_device of the component sunxi-cir. Performing a manipulation results in allocation of resources. This vulnerability is reported as CVE-2026-89883. The attack requires a local approach. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been classified as problematic. This affects the function rc_register_device of the component sunxi-cir. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: media: rc: sunxi-cir: Unregister rc device on probe failure After rc_register_device() succeeds, later probe failures must undo the registration with rc_unregister_device(). The current error path jumps to the allocation cleanup label and only calls rc_free_device(), leaving the rc device registration and resources created by rc_register_device() behind. Add a registered-device unwind label for the IRQ lookup, IRQ request, and hardware initialization failure paths. Keep rc_free_device() for failures before rc_register_device() succeeds.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-89883 since 09/11/2026. The exploitability is told to be easy. An attack has to be approached locally. Additional levels of successful authentication are required for exploitation. Technical details are known, but no exploit is available.

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 4655a591478e4b31a3396695a2457daad9d4c899/4efd7146dcf959afe64e9c51531cd8f82e60eab6/826763adbd8bd3137c5b3756650da473dc6216d5/59951b8a87ef4fb4b5b9409f70ba07663681a040/5b58d8c206f37525c8217171e1f3e91dd2fa55e5/5e6f5bffaa80fc8ecce348ec0e34fed9d843e47e/479aa6fa8c50f1052f1451326ef7d4d586d340c3 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: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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 5.15.221/6.1.188/6.6.157/6.12.110/6.18.51/7.2.5/7.3-rc1
Patch: 4655a591478e4b31a3396695a2457daad9d4c899/4efd7146dcf959afe64e9c51531cd8f82e60eab6/826763adbd8bd3137c5b3756650da473dc6216d5/59951b8a87ef4fb4b5b9409f70ba07663681a040/5b58d8c206f37525c8217171e1f3e91dd2fa55e5/5e6f5bffaa80fc8ecce348ec0e34fed9d843e47e/479aa6fa8c50f1052f1451326ef7d4d586d340c3

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-2026-89883 (🔒)
GCVE (CVE): GCVE-0-2026-89883
GCVE (VulDB): GCVE-100-405717

Entryinfo

Created: 09/16/2026 14:11
Changes: 09/16/2026 14:11 (59)
Complete: 🔍
Cache ID: 216::103

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