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CVE-2026-90238— media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path

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，已修复以下漏洞： 媒体子系统（AMD ISP4）：修复 isp4sd_pwron_and_init() 错误路径中的自死锁 通过 持有 。如果在初始化过程中发生任何错误，流程会跳转到 并调用 。该辅助函数会再次获取同一个 ，而当前线程已经持有了这个非递归互斥锁，从而导致任何初始化失败都会引发死锁。 修复方案是改为分阶段展开（unwind）错误路径，在每个故障点仅释放该点实际获取的资源。这种方式也避免了无条件执行完整去初始化流程在早期失败点可能引发的问题，例如： 由于调用 导致的运行时电源管理

AI Predicted 5.0 Difficulty: Moderate

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3< 74669cc3483e9729ca26b4e06a096ccdd607db64 affected
4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3< ef46d80a7015269a98c9505b5912a83798799199 affected
7.2 affected
< 7.2 unaffected
7.2.6≤ 7.2.* unaffected
7.3-rc1≤ * unaffected
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I. Basic Information for CVE-2026-90238

Vulnerability Information
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Vulnerability Title
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path isp4sd_pwron_and_init() holds ops_mutex via guard(mutex) and, on any init failure, jumps to err_deinit and calls isp4sd_pwroff_and_deinit(). That helper takes the same ops_mutex, re-acquiring a non-recursive mutex already held by the current thread, so any init failure deadlocks. Unwind the error path in stages instead, releasing only what each failure point acquired. This also avoids the issues that an unconditional teardown would hit at the earlier failures, such as a runtime-PM underflow from pm_runtime_resume_and_get() and MMIO access while the device is unpowered.
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 4e5e7a7ddb4ab9ac35928d7dc72efc8797639dc3 ~ 74669cc3483e9729ca26b4e06a096ccdd607db64 -
Linux Linux 7.2 -

II. Public POCs for CVE-2026-90238

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III. Intelligence Information for CVE-2026-90238

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Patches & Fixes for CVE-2026-90238 (1)

Other References for CVE-2026-90238 (1)

Same Patch Batch · Linux · 2026-09-17 · 602 CVEs total

CVE-2026-90257 Bluetooth: virtio_bt: avoid OOB read of build info string
CVE-2026-90240 iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90239 media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
CVE-2026-90241 iommu/vt-d: Tear down scalable-mode context on probe failure
CVE-2026-90243 iommu/vt-d: Clear Present bit before tearing down copied context entry
CVE-2026-90242 iommu/vt-d: Fix iopf_refcount leak on RID domain replacement
CVE-2026-90244 iommu/dma: Restore locking around msi_page_list
CVE-2026-90245 fbdev: kyro: Validate overlay viewport coordinates
CVE-2026-90246 apparmor: fix integer overflow in verify_tags() bounds check
CVE-2026-90247 bpf: Fix mmap_lock leak in irq_work path
CVE-2026-90248 net/sched: cls_api: fix teardown of an adopted proto on insert-race loss
CVE-2026-90249 iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
CVE-2026-90250 bpf, cgroup: Fix storage null-ptr-deref after replacing prog
CVE-2026-90251 Bluetooth: MSFT: validate evt_prefix_len against the response length
CVE-2026-90253 Bluetooth: MGMT: free the mesh send cancel command when it is cancelled
CVE-2026-90252 Bluetooth: MGMT: free the HCI command when it is cancelled
CVE-2026-90254 Bluetooth: hci_sync: free the advertising instance on the failure and cancel paths
CVE-2026-90256 Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90255 Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90267 scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails

Showing top 20 of 602 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90238

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