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CVE-2026-90425— iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID

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： iommu/tegra241-cmdqv：要求 vSID 必须对应恰好一个流 ID 函数将虚拟流 ID（vSID）映射到从 获取的单个物理流 ID，并且仅在设备未恰好拥有一个流时发出警告。如果设备拥有多个流，只有第一个流会被映射，因此针对该 vSID 的失效操作（invalidation）无法触达其他流的 ATC 和 IOTLB 缓存项；而如果设备没有任何流，则 是一个零大小指针（ZERO_SIZE_PTR），导致越界读取。 当 不等于 1 时，以 错误码拒绝该映射。

CVSS 8.8 · High EPSS 0.13% · P3

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7< 9b37afb2d34d99ec4f8db28134181b5a8ec9a4a5 affected
4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7< 0b139ec4641c7d4163d8e345c26cc630e24fa43b affected
4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7< fb292bfc9be936dade7eef7ec5762de1201983d8 affected
6.17 affected
< 6.17 unaffected
6.18.52≤ 6.18.* unaffected
7.2.6≤ 7.2.* unaffected
7.3-rc1≤ * unaffected
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I. Basic Information for CVE-2026-90425

Vulnerability Information
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Vulnerability Title
iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID tegra241_vintf_init_vsid() maps a guest vSID to a single physical Stream ID taken from master->streams[0], and only warns when the device does not have exactly one stream. A device with several streams gets only its first one mapped, so a guest vSID invalidation cannot reach the others' ATC and IOTLB entries; a device with none makes master->streams a ZERO_SIZE_PTR, read out of bounds. Reject the mapping with -EOPNOTSUPP if master->num_streams is not one.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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 4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 ~ 9b37afb2d34d99ec4f8db28134181b5a8ec9a4a5 -
Linux Linux 6.17 -

II. Public POCs for CVE-2026-90425

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III. Intelligence Information for CVE-2026-90425

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Patches & Fixes for CVE-2026-90425 (3)

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-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
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-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
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-2026-90255 8.8 HIGH Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

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-2026-90425

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