Linux Kernel up to 7.2.5 formatter_pcm xlnx_formatter_pcm_open use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as very critical was found in Linux Kernel up to 7.2.5. The affected element is the function xlnx_formatter_pcm_open of the component formatter_pcm. Such manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2026-90214. Local access is required to approach this attack. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.5 and classified as very critical. Affected by this issue is the function xlnx_formatter_pcm_open of the component formatter_pcm. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ASoC: xilinx: formatter_pcm: fix stream_data leak on open error In xlnx_formatter_pcm_open(), stream_data is allocated and adata->play_stream or adata->capture_stream is assigned early. If a later step, such as snd_pcm_hw_constraint_step() or snd_pcm_hw_constraint_integer(), fails, the function returns the error immediately. ALSA does not call the close callback when open fails, so stream_data is leaked and the stream pointer is left dangling, pointing to a substream that ALSA frees. A later interrupt would then call snd_pcm_period_elapsed() on the freed substream. Free stream_data and clear the stream pointer on the error paths.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-90214 since 09/11/2026. The exploitation is known to be easy. Local access is required to approach this attack. 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 09/17/2026).

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 5e1a2d9fff57f3a2b1a0f54d128d64245a253004/edf81b293cba1b00a5e71becf184414f6991a6ca/3fd89a51b8cfe788df67f54b716b305dd45b8468/8c38ae4a465691947977c25d10394da22a64a19f/9030aa4e14b704dc39ee208207cb65064020d857/8b30628dfc2b2fad3b55a9441776a226035045fa/4e0ce77df7d9808926719d7950a07fbad14ea9ef/b992511180e126150c6ad3580a6fd568c385f4c6 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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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
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: Use after free
CWE: CWE-416 / CWE-119
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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 5e1a2d9fff57f3a2b1a0f54d128d64245a253004/edf81b293cba1b00a5e71becf184414f6991a6ca/3fd89a51b8cfe788df67f54b716b305dd45b8468/8c38ae4a465691947977c25d10394da22a64a19f/9030aa4e14b704dc39ee208207cb65064020d857/8b30628dfc2b2fad3b55a9441776a226035045fa/4e0ce77df7d9808926719d7950a07fbad14ea9ef/b992511180e126150c6ad3580a6fd568c385f4c6

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90214 (🔒)
GCVE (CVE): GCVE-0-2026-90214
GCVE (VulDB): GCVE-100-406742

Entryinfo

Created: 09/17/2026 20:51
Changes: 09/17/2026 20:51 (59)
Complete: 🔍
Cache ID: 216::103

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