Linux Kernel up to 7.2.4 saa7164 saa7164-core.c saa7164_dev_setup allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability identified as very critical has been detected in Linux Kernel up to 6.1.187/6.6.156/6.12.109/6.18.50/7.2.4. This affects the function saa7164_dev_setup of the file drivers/media/pci/saa7164/saa7164-core.c of the component saa7164. This manipulation causes allocation of resources. This vulnerability is registered as CVE-2026-89877. The attack needs to be launched locally. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.1.187/6.6.156/6.12.109/6.18.50/7.2.4 and classified as very critical. Affected by this vulnerability is the function saa7164_dev_setup of the file drivers/media/pci/saa7164/saa7164-core.c of the component saa7164. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is 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. 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: media: saa7164: fix cleanup on resource allocation failure saa7164_dev_setup() adds the device to the global saa7164_devlist before requesting the PCI BAR memory regions. If get_resources() fails, saa7164_dev_setup() decrements the device count and returns an error, but leaves the device on saa7164_devlist. The probe error path then frees the device, leaving a dangling entry on the global list. Reuse the existing MMIO mapping error path to remove the device from saa7164_devlist and decrement the device count before returning. Also release BAR0 if it was successfully requested but the BAR2 request fails.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-89877 since 09/11/2026. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/16/2026).

Upgrading to version 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 daa5b32cdf7db81a07ee2a91ce092a363e7754aa/77f216f8de6221efb6f6c471bc9e598f1879825b/69259c627009bf7621010ae9e997dad2dad3339c/4d2048466af9e2c960c5be6dcd317e3b657d268b/fc65623524b5bf23baddc6ae688d954fba0d5de2/28e84c6e2e6753ed238ea097b2842a32a6a6879b is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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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: 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 6.1.188/6.6.157/6.12.110/6.18.51/7.2.5/7.3-rc1
Patch: daa5b32cdf7db81a07ee2a91ce092a363e7754aa/77f216f8de6221efb6f6c471bc9e598f1879825b/69259c627009bf7621010ae9e997dad2dad3339c/4d2048466af9e2c960c5be6dcd317e3b657d268b/fc65623524b5bf23baddc6ae688d954fba0d5de2/28e84c6e2e6753ed238ea097b2842a32a6a6879b

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-2026-89877 (🔒)
GCVE (CVE): GCVE-0-2026-89877
GCVE (VulDB): GCVE-100-405715

Entryinfo

Created: 09/16/2026 14:10
Changes: 09/16/2026 14:10 (60)
Complete: 🔍
Cache ID: 216::103

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