Linux Kernel up to 7.2.0 ALSA snd_dummy_probe out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 7.2.0. Affected by this issue is the function snd_dummy_probe of the component ALSA. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2026-80812. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.2.0. Affected by this vulnerability is the function snd_dummy_probe of the component ALSA. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. 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: ALSA: dummy: Check card index validity at probe snd_dummy_probe() blindly trusts that the given devptr->id value is within the proper card index range. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-80812 since 08/26/2026. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation needs additional levels of successful authentication. It demands that the victim is doing some kind of user interaction. 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 09/04/2026).

Upgrading to version 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.47, 7.1.11, 7.2.1 or 7.3-rc1 eliminates this vulnerability. Applying the patch b7579e86afcec932e169d10e2d603abed8dd2fdf/4d0892a90b57f0e89b274c3f3c51c2fa17937c88/b20eb7ecbdaa3e649023fe41b177d90983ffb487/c9f10a001c243d1f069ebb0e2f4999ad4043a254/f20c2c32ec1c5c3526f29a03b487c55a5890996c/3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec/690b721b9595f9a43395fd4047a832c42b5b6078 is able to eliminate this problem.

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: 7.7
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.7
VulDB Temp Score: 7.4
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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

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 5.15.218/6.1.185/6.6.154/6.12.106/6.18.47/7.1.11/7.2.1/7.3-rc1
Patch: b7579e86afcec932e169d10e2d603abed8dd2fdf/4d0892a90b57f0e89b274c3f3c51c2fa17937c88/b20eb7ecbdaa3e649023fe41b177d90983ffb487/c9f10a001c243d1f069ebb0e2f4999ad4043a254/f20c2c32ec1c5c3526f29a03b487c55a5890996c/3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec/690b721b9595f9a43395fd4047a832c42b5b6078

Timelineinfo

08/26/2026 CVE reserved
09/04/2026 +9 days Advisory disclosed
09/04/2026 +0 days VulDB entry created
09/04/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80812 (🔒)
GCVE (CVE): GCVE-0-2026-80812
GCVE (VulDB): GCVE-100-398971

Entryinfo

Created: 09/04/2026 18:38
Changes: 09/04/2026 18:38 (59)
Complete: 🔍
Cache ID: 216::103

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