Linux Kernel up to 6.6.156/6.12.108/6.18.49/7.2.3 tegra-video tegra_vip_channel_of_parse reference count

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.7$0-$5k0.00+

Summaryinfo

A vulnerability classified as very critical has been found in Linux Kernel up to 6.6.156/6.12.108/6.18.49/7.2.3. This impacts the function tegra_vip_channel_of_parse of the component tegra-video. This manipulation causes reference count. The identification of this vulnerability is CVE-2026-93223. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Linux Kernel up to 6.6.156/6.12.108/6.18.49/7.2.3. Affected by this vulnerability is the function tegra_vip_channel_of_parse of the component tegra-video. The manipulation with an unknown input leads to a reference count vulnerability. The CWE definition for the vulnerability is CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. 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: staging: media: tegra-video: fix of_node_put() on VIP parse errors tegra_vip_channel_of_parse() initializes np from dev->of_node without taking a reference, but its error paths drop one through the err_node_put label. This underflows the refcount of the VIP device's OF node when endpoint parsing fails on a malformed device tree. The only reference the function takes on np is the success-path of_node_get() stored in vip->chan.of_node, and that one is already released by the tegra_vip_init() error path and by tegra_vip_exit(). Return errors directly instead of jumping to the bogus cleanup label.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-93223 since 09/17/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. 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 09/24/2026).

Upgrading to version 6.6.157, 6.12.109, 6.18.50, 7.2.4 or 7.3-rc1 eliminates this vulnerability. Applying the patch a3783800c9475fa58b8db0885893f96a23f949da/1295ba29ac590bbb5c4a586afd408018168af10b/656d047dc0c29c0964d840217a0593f16aa9bc5e/fc9937019cf7e2fe4e29f9341e6400bcd2cde721/7393372f79db940acff206b43e2905685a0c57ad is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 9.1
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.1
VulDB Temp Score: 8.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
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 6.6.157/6.12.109/6.18.50/7.2.4/7.3-rc1
Patch: a3783800c9475fa58b8db0885893f96a23f949da/1295ba29ac590bbb5c4a586afd408018168af10b/656d047dc0c29c0964d840217a0593f16aa9bc5e/fc9937019cf7e2fe4e29f9341e6400bcd2cde721/7393372f79db940acff206b43e2905685a0c57ad

Timelineinfo

09/17/2026 CVE reserved
09/24/2026 +7 days Advisory disclosed
09/24/2026 +0 days VulDB entry created
09/24/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-93223 (🔒)
GCVE (CVE): GCVE-0-2026-93223
GCVE (VulDB): GCVE-100-409429

Entryinfo

Created: 09/24/2026 17:52
Changes: 09/24/2026 17:52 (59)
Complete: 🔍
Cache ID: 216::103

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