Linux Kernel up to 7.1.9 formatter_pcm dev_get_drvdata null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k1.40

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 7.1.9. The impacted element is the function dev_get_drvdata of the component formatter_pcm. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2026-80743. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.1.9. This vulnerability affects the function dev_get_drvdata of the component formatter_pcm. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ASoC: xilinx: formatter_pcm: pass aud_drv_data to irq handlers The irq handlers take a struct device pointer and call dev_get_drvdata() to obtain the driver data. However, the driver data is only set at the end of probe, after devm_request_irq(), so an interrupt taken in between causes the handlers to pass a NULL pointer to readl() and crash. Pass the private data directly as the devm_request_irq() argument instead of the device pointer, matching what the handlers expect.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-80743 since 08/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/03/2026).

Upgrading to version 5.10.266, 5.15.217, 6.1.184, 6.6.153, 6.12.105, 6.18.46 or 7.1.10 eliminates this vulnerability. Applying the patch 7d857aec162fb02d10ce326aecc1ac7509c31f43/a85315f2eb06adc5597a7103e1910fc7d0d35ffd/721cfeb0b9572084435695ae535411b921d1ea68/b4ef887bee4d3c177adac5d1eab8b2de31b08ac3/0d58a70b6dc7b65772e3ef7c43beb91882cf9ed5/f51a540b14eecb8667bbe450192318271b87631e/09e4c486348e176c083f8bee9169ae8f408cf8d1/f12afefb7b01f94d6d66d397f323a9914edbf70e is able to eliminate this problem.

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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: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Null pointer dereference
CWE: CWE-476 / 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 5.10.266/5.15.217/6.1.184/6.6.153/6.12.105/6.18.46/7.1.10
Patch: 7d857aec162fb02d10ce326aecc1ac7509c31f43/a85315f2eb06adc5597a7103e1910fc7d0d35ffd/721cfeb0b9572084435695ae535411b921d1ea68/b4ef887bee4d3c177adac5d1eab8b2de31b08ac3/0d58a70b6dc7b65772e3ef7c43beb91882cf9ed5/f51a540b14eecb8667bbe450192318271b87631e/09e4c486348e176c083f8bee9169ae8f408cf8d1/f12afefb7b01f94d6d66d397f323a9914edbf70e

Timelineinfo

08/26/2026 CVE reserved
09/03/2026 +8 days Advisory disclosed
09/03/2026 +0 days VulDB entry created
09/03/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80743 (🔒)
GCVE (CVE): GCVE-0-2026-80743
GCVE (VulDB): GCVE-100-398350

Entryinfo

Created: 09/03/2026 10:58
Changes: 09/03/2026 10:58 (59)
Complete: 🔍
Cache ID: 216::103

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