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CVE-2026-93061— gpu: host1x: Avoid stack over-read in debug output helpers

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.

以下是该漏洞描述的中文翻译： Linux 内核中已修复以下漏洞： gpu: host1x: 避免在调试输出辅助函数中发生栈越界读取 和 使用了 ，该函数返回的是在无限大缓冲区下格式化字符串本应达到的长度。该返回值被直接作为要输出的字节数传递给 。 如果 产生的字符串长度超过 256 字节，就可能导致在输出缓冲区末尾之后发生读取（即栈越界读取）。由于 调试输出接口会忽略字节数参数，因此该问题仅影响 debugfs 文件。在实际应用中，这种情况发生的可能性极低。 修复方法： 改用 ，该函数返回实际写入的字节数。

AI Predicted 3.1 Difficulty: Theoretical EPSS 0.22% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 6236451d83a720072053855fa63d51934024a707< d7a560dc912756fd8b39b28b10818d931e863d2d affected
6236451d83a720072053855fa63d51934024a707< 41517c46002afd717f0f2d0975c740dd610f87fe affected
6236451d83a720072053855fa63d51934024a707< ebab3a25a0403bcbc0c40ef77d69d23270e45547 affected
6236451d83a720072053855fa63d51934024a707< 4f9f0afdbdf513a49065207ff6b7e1d15051175a affected
6236451d83a720072053855fa63d51934024a707< 819dd96a6571f2b12496b080e5187ba3fa897232 affected
6236451d83a720072053855fa63d51934024a707< 9ad7a6ccc7b839247663d57d3dbb4481dec492de affected
6236451d83a720072053855fa63d51934024a707< b00290d1dc23a5ef9a0d3103aad1fe2274e86569 affected
6236451d83a720072053855fa63d51934024a707< bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6 affected
… +10 more rows
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I. Basic Information for CVE-2026-93061

Vulnerability Information
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Vulnerability Title
gpu: host1x: Avoid stack over-read in debug output helpers
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Avoid stack over-read in debug output helpers host1x_debug_output() and host1x_debug_cont() used vsnprintf(), which returns the length the formatted string would have reached with an unbounded buffer. That return value was passed straight to o->fn as the number of bytes to emit. This could cause a read past end of the output buffer if a call to host1x_debug_* produced a string longer than 256 bytes. This only affected the debugfs files as the printk debug sink ignores the number of bytes. In practice, this is very unlikely to occur. Fix by switching to vscnprintf(), which returns the number of bytes actually written.
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 6236451d83a720072053855fa63d51934024a707 ~ d7a560dc912756fd8b39b28b10818d931e863d2d -
Linux Linux 3.10 -

II. Public POCs for CVE-2026-93061

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III. Intelligence Information for CVE-2026-93061

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Patches & Fixes for CVE-2026-93061 (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-2026-90235 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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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