Linux Kernel up to 6.18.41/7.1.5 stm32-dcmipp dcmipp_bytecap_start_streaming memory leak

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k1.07+

Summaryinfo

A vulnerability categorized as very critical has been discovered in Linux Kernel up to 6.18.41/7.1.5. This issue affects the function dcmipp_bytecap_start_streaming of the component stm32-dcmipp. Executing a manipulation can lead to memory leak. This vulnerability is handled as CVE-2026-68211. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.41/7.1.5. It has been declared as very critical. This vulnerability affects the function dcmipp_bytecap_start_streaming of the component stm32-dcmipp. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: media: stm32-dcmipp: Return queued buffers on start_streaming() failure The vb2 framework hands buffers to the driver via buf_queue() before calling start_streaming(). If start_streaming() returns an error without first returning those buffers via vb2_buffer_done(), vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued buffers leak. dcmipp_bytecap_start_streaming() returned -EINVAL when the source subdevice could not be resolved from the media graph, before pm_runtime_resume_and_get() and media_pipeline_start() had been called. The remaining error paths already converge on the err_buffer_done label, which calls dcmipp_bytecap_all_buffers_done(..., VB2_BUF_STATE_QUEUED). Jump to that label directly: the intermediate err_pm_put / err_media_pipeline_stop labels are skipped, which is correct because nothing they would undo has happened yet. This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo: Return queued buffers on start_streaming() failure").

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-68211 since 07/30/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/10/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 6.18.42, 7.1.6 or 7.2-rc1 eliminates this vulnerability. Applying the patch ed342a86bb2f9c1b44a0fc4f6b08c14073946e4f/624af2d4b5e9d3dd366538e4fb4a2a037792a7e3/ffc8eec06378a340d708c889184ab3e14b57d540 is able to eliminate this problem.

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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: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
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: Memory leak
CWE: CWE-401 / 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 6.18.42/7.1.6/7.2-rc1
Patch: ed342a86bb2f9c1b44a0fc4f6b08c14073946e4f/624af2d4b5e9d3dd366538e4fb4a2a037792a7e3/ffc8eec06378a340d708c889184ab3e14b57d540

Timelineinfo

07/30/2026 CVE reserved
08/10/2026 +11 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68211 (🔒)
GCVE (CVE): GCVE-0-2026-68211
GCVE (VulDB): GCVE-100-387556

Entryinfo

Created: 08/10/2026 16:08
Changes: 08/10/2026 16:08 (59)
Complete: 🔍
Cache ID: 216::103

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