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CVE-2026-92477— scsi: ufs: debugfs: Reserve space for a string terminator

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.

Linux 内核中，以下漏洞已得到修复： scsi: ufs: debugfs: 为字符串结束符预留空间 函数将用户输入复制到一个零初始化的栈缓冲区，并将其传递给 。如果写入的数据恰好填满整个缓冲区，就会覆盖掉唯一的终止符（NUL）。 对于长度填满缓冲区、没有为末尾 NUL 字符预留空间的输入，应予以拒绝。

AI Predicted 4.4 Difficulty: Hard EPSS 0.17% · P6

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 7340faae947400907e5e7581444712110d2811d5< b43890843e834300f967c69e74c7c2eb22cb1664 affected
7340faae947400907e5e7581444712110d2811d5< 587be18e0935632ebd367b0f89e37aa5762e400f affected
7340faae947400907e5e7581444712110d2811d5< d223989e1a1edad217b673486b093bd157fb6c9a affected
7340faae947400907e5e7581444712110d2811d5< cc92af8cc0e4dacd4375d34475141b0f1a70c09e affected
7340faae947400907e5e7581444712110d2811d5< 2b3fb5693c25c21741f357a8c9d0e1f19b7e368f affected
7340faae947400907e5e7581444712110d2811d5< abd26e6b53c4169122d61fdd4cabe09bdd916aac affected
5.16 affected
< 5.16 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-92477

Vulnerability Information
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Vulnerability Title
scsi: ufs: debugfs: Reserve space for a string terminator
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: debugfs: Reserve space for a string terminator ufs_saved_err_write() copies user input into a zero-initialized stack buffer and passes it to kstrtoint(). A write that fills the entire buffer overwrites its only terminator. Reject an input whose length leaves no room for the trailing NUL.
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 7340faae947400907e5e7581444712110d2811d5 ~ b43890843e834300f967c69e74c7c2eb22cb1664 -
Linux Linux 5.16 -

II. Public POCs for CVE-2026-92477

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III. Intelligence Information for CVE-2026-92477

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Patches & Fixes for CVE-2026-92477 (6)

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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