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CVE-2026-90296— cpufreq: imx6q: fix devres accumulation across driver rebind

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，以下漏洞已得到修复： cpufreq: imx6q: 修复驱动重新绑定时 devres 的累积问题 是通过 分配的，其中 是 返回的 CPU 设备。由于该 CPU 设备从未被解绑，其 devres 列表也从未被释放，而 也没有释放该数组。因此，每次 都会增加一个分配，且该分配会在整个系统生命周期内保留下来。 改为针对平台设备（platform device）进行分配。当驱动解绑时，该平台设备的 devres 会被释放，这正好符合该数组应有的生命周期： 会读取该数组，而在 之后，不应再访问到它

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< 493c4d5982f037f288509a1cee352b8b9705fb38 affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< d91f07381e2b70578ff92b83d9422ac31e7b9096 affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< 38d2c3c9238b9d499e1829a3b8e80c2f73c73b5c affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< 92e53a5274276a7b1ca815b9aacebea4fb7efe75 affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< 9e314b3ecd2594958d4f4999313641290ad28ebe affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< e2d2612e63e294ebcdec7c6f08a1a052b7dfdc59 affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< 0f77d1a0a25056146eea1f8619fa06ce287c91f7 affected
b4573d1d657aae28bedf3a9a1f5367e09c80d1d6< 22c23c72c3b21fa3ec3db5070dfc0582794e0ef9 affected
… +10 more rows
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I. Basic Information for CVE-2026-90296

Vulnerability Information
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Vulnerability Title
cpufreq: imx6q: fix devres accumulation across driver rebind
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cpufreq: imx6q: fix devres accumulation across driver rebind imx6_soc_volt is allocated with devm_kcalloc(cpu_dev, ...), where cpu_dev is the CPU device from get_cpu_device(0). That device is never unbound, so its devres list is never released, and imx6q_cpufreq_remove() does not free the array either. Every probe therefore adds an allocation that stays for the lifetime of the system. Allocate against the platform device instead. Its devres is released when the driver is unbound, which is exactly the lifetime the array wants: imx6q_set_target() reads it, and nothing may reach that after cpufreq_unregister_driver(). That makes the array actually go away on unbind, so also clear the file-scope pointer in remove and on the failed-probe path, rather than leave it pointing at memory devres is about to release. Tested by rebinding the driver on qemu's mcimx6ul-evk.
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 ~ 493c4d5982f037f288509a1cee352b8b9705fb38 -
Linux Linux 3.14 -

II. Public POCs for CVE-2026-90296

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III. Intelligence Information for CVE-2026-90296

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Patches & Fixes for CVE-2026-90296 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
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-2026-90414 9.1 CRITICAL IB/isert: reject 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-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90162 8.8 HIGH ksmbd: defer publishing granted locks to prevent UAF/double-free race
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90296

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