Linux Kernel up to 6.12.109/6.18.51/7.2.5 bcm2835-unicam v4l2_async_nf_add_fwnode_remote memory leak

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.12.109/6.18.51/7.2.5. It has been rated as problematic. This affects the function v4l2_async_nf_add_fwnode_remote of the component bcm2835-unicam. Performing a manipulation results in memory leak. This vulnerability is known as CVE-2026-93071. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.109/6.18.51/7.2.5. It has been classified as problematic. This affects the function v4l2_async_nf_add_fwnode_remote of the component bcm2835-unicam. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: media: bcm2835-unicam: Fix asc leaked in error/remove path v4l2_async_nf_add_fwnode_remote() allocates the asc, which is freed when v4l2_async_nf_cleanup() is called. Call v4l2_async_nf_cleanup() properly in the driver paths. Discovered with kmemleak after rmmod: unreferenced object 0xffff000084526b80 (size 64): comm "modprobe", pid 185, jiffies 4295013512 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 e8 0d ff bf 00 00 ff ff ................ 40 83 bc 84 00 00 ff ff 60 83 bc 84 00 00 ff ff @.......`....... backtrace (crc ac584083): [<00000000ffb081a7>] kmemleak_alloc+0x38/0x44 [<00000000d2fd9301>] __kmalloc+0x1b0/0x250 [<000000004dd5354d>] __v4l2_async_nf_add_fwnode+0x28/0x9c [<0000000067587657>] __v4l2_async_nf_add_fwnode_remote+0x3c/0x64

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-93071 since 09/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 5479372db364c80bb6bd59f640f5c31de3984bab/2c29cd408ef86e695acb2a5d4e00fa2f5695368d/de9be39cefda1ecd762e6a913665c01f7bb18100/253c9659e25131b0169f718e7d094ac1aa0d9279 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: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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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 6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 5479372db364c80bb6bd59f640f5c31de3984bab/2c29cd408ef86e695acb2a5d4e00fa2f5695368d/de9be39cefda1ecd762e6a913665c01f7bb18100/253c9659e25131b0169f718e7d094ac1aa0d9279

Timelineinfo

09/17/2026 Advisory disclosed
09/17/2026 +0 days CVE reserved
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-2026-93071 (🔒)
GCVE (CVE): GCVE-0-2026-93071
GCVE (VulDB): GCVE-100-407085

Entryinfo

Created: 09/17/2026 23:02
Changes: 09/17/2026 23:02 (59)
Complete: 🔍
Cache ID: 216::103

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