CVE-2026-90405— media: stm32: dcmi: fix some error handling bugs in probe()
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Linux 内核中，已解决以下漏洞： 媒体：stm32：dcmi：修复 probe() 函数中的若干错误处理缺陷 此处存在以下几个问题： 1) 在以下赋值操作之后： chan = dma_request_chan(&pdev->dev, "tx"); 各个错误处理路径在返回前需要进行清理工作。但第一个错误处理路径直接返回了，未执行清理。 2) 错误处理路径中检查的是 "dcmi->mdma_chan"，但该字段直到后续代码才被赋值，因此会导致内存泄漏。应改为检查局部变量 "mdma_chan"。 3) 错误处理
Possible ATT&CK Techniques 1 AI
T1140 · Deobfuscate/Decode Files or InformationAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | bc901885fae0a0273288666609d143e960b6ad3a< 4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659 |
affected |
bc901885fae0a0273288666609d143e960b6ad3a< f1d1ed39ced825615aeac61f0b6a322178756632 |
affected | ||
7.1 |
affected | ||
< 7.1 |
unaffected | ||
7.2.6≤ 7.2.* |
unaffected | ||
7.3-rc1≤ * |
unaffected |
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I. Basic Information for CVE-2026-90405
Vulnerability Information
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Vulnerability Title
media: stm32: dcmi: fix some error handling bugs in probe()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
media: stm32: dcmi: fix some error handling bugs in probe()
There are a few issues here:
1) After we assign:
chan = dma_request_chan(&pdev->dev, "tx");
Then the error paths need to clean up before returning. The first
error path does a direct return.
2) The error paths check "dcmi->mdma_chan" but that is not assigned
until later so it results in memory leaks. Test "mdma_chan"
instead.
3) The error handling calls dma_release_channel(dcmi->dma_chan) before
"dcmi->dma_chan" has been assigned which leads to a NULL pointer
dereference. Use the "chan" variable instead.
I also moved the call to dma_release_channel() after the call to
dma_release_channel() so it mirrors the allocation code better.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-90405
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-90405 (2)
Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total
| CVE-2026-90173 | 9.8 CRITICAL | smb: smbdirect: free completion queues with ib_free_cq() |
| CVE-2026-92489 | 9.8 CRITICAL | xfrm: Fix skb double-free in xfrm_dev_direct_output() |
| CVE-2026-90151 | 9.8 CRITICAL | NFSv4: remove callback IDR entry on client allocation failure |
| CVE-2026-90235 | 9.8 CRITICAL | sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE |
| CVE-2026-90104 | 9.8 CRITICAL | NFSv4.1: zero referring call lists before decoding |
| CVE-2026-90110 | 9.4 CRITICAL | inetpeer: randomize RB-tree node comparison using SipHash |
| CVE-2026-90413 | 9.1 CRITICAL | IB/isert: reject login PDUs declaring more data than was received |
| CVE-2026-90230 | 9.1 CRITICAL | nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate() |
| CVE-2026-90414 | 9.1 CRITICAL | IB/isert: reject PDUs declaring more data than was received |
| CVE-2026-90255 | 8.8 HIGH | Bluetooth: hci_conn: fix the SCO setup context lifetime |
| CVE-2026-90329 | 8.8 HIGH | HID: synchronize input before cleaning up a failed probe |
| CVE-2026-90357 | 8.8 HIGH | wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement |
| CVE-2026-90367 | 8.8 HIGH | wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER |
| CVE-2026-90256 | 8.8 HIGH | Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind |
| CVE-2026-90371 | 8.8 HIGH | wifi: mt76: fix RXDMAD_C buffer recycling race |
| CVE-2026-93189 | 8.8 HIGH | HID: core: quiesce input in hid_hw_stop() to prevent use-after-free |
| CVE-2026-90425 | 8.8 HIGH | iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID |
| CVE-2026-90240 | 8.8 HIGH | iommu/vt-d: Flush context cache with correct SID when tearing down aliases |
| CVE-2026-90162 | 8.8 HIGH | ksmbd: defer publishing granted locks to prevent UAF/double-free race |
| CVE-2026-90286 | 8.8 HIGH | drm/amdgpu/gfx6: Use PFP on the compute queues too |
Showing top 20 of 600 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-90405
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