CVE-2026-93052— misc: bcm-vk: Use acquire/release for msgq_inited
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： misc: bcm-vk：对 msgq_inited 使用 acquire/release 语义 函数会填充消息队列信息，随后将 置位。读取方在访问消息队列及其缓存的队列信息之前，会调用 。 使用 / 并不能对相应的内存访问进行排序（ordering）。因此，读取方可能会看到 已置位，却仍然观察到过时的（stale）队列信息。应当在发布已初始化的队列时使用 release 语义，在检查门控（gate）时使用 acquire 语义。 同时，保留 中的清零操作仍为 。该操作
Affected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 111d746bb4767ad476f80fe49067e3df3d9a9375< bab66a9e30e39a06f3463b19f8c704386dfd5268 |
affected |
111d746bb4767ad476f80fe49067e3df3d9a9375< 679cfada6868723ccf162ec3b78c7402ff2405bf |
affected | ||
111d746bb4767ad476f80fe49067e3df3d9a9375< f7a8f4cbc8cede0be55220367dc52b126e2d39e5 |
affected | ||
111d746bb4767ad476f80fe49067e3df3d9a9375< 1df3926ed8771edf286ff753428b243f334e6041 |
affected | ||
111d746bb4767ad476f80fe49067e3df3d9a9375< a45d6dd3c11e921882a2e74c7c8710b975f2eaa7 |
affected | ||
111d746bb4767ad476f80fe49067e3df3d9a9375< 4984277bc43f84d7506346a09b29af138246d54a |
affected | ||
111d746bb4767ad476f80fe49067e3df3d9a9375< 61b101c6a150057b6d512421ed108aed16e822ea |
affected | ||
5.12 |
affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2026-93052
Vulnerability Information
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Vulnerability Title
misc: bcm-vk: Use acquire/release for msgq_inited
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
misc: bcm-vk: Use acquire/release for msgq_inited
bcm_vk_sync_msgq() fills the message queue information and then sets
msgq_inited. Readers call bcm_vk_drv_access_ok() before accessing the
message queues and their cached queue information.
atomic_set()/atomic_read() do not order those accesses. A reader can see
msgq_inited set while still seeing stale queue information. Use release
when publishing the initialized queues and acquire when checking the gate.
Keep the clear in bcm_vk_blk_drv_access() as atomic_set(). It closes the
gate and does not publish queue state to readers.
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-2026-93052
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-93052 (7)
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-2026-90235 | 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-2026-90104 | 9.8 CRITICAL | NFSv4.1: zero referring call lists before decoding |
| 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-2026-90230 | 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-2026-90413 | 9.1 CRITICAL | IB/isert: reject login PDUs declaring more data than was received |
| CVE-2026-90367 | 8.8 HIGH | wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER |
| CVE-2026-90329 | 8.8 HIGH | HID: synchronize input before cleaning up a failed probe |
| CVE-2026-93189 | 8.8 HIGH | HID: core: quiesce input in hid_hw_stop() to prevent use-after-free |
| CVE-2026-90240 | 8.8 HIGH | iommu/vt-d: Flush context cache with correct SID when tearing down aliases |
| 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-2026-93042 | 8.8 HIGH | dmaengine: dw-edma: Terminate all descriptors without callbacks |
| CVE-2026-90256 | 8.8 HIGH | Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind |
| CVE-2026-90380 | 8.8 HIGH | wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete |
| CVE-2026-90381 | 8.8 HIGH | wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx() |
| CVE-2026-90425 | 8.8 HIGH | iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID |
Showing top 20 of 600 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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Same vendor: Linux
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CVE-2026-98385
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bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
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