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CVE-2025-38391— usb: typec: altmodes/displayport: do not index invalid pin_assignments

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 kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于索引无效的pin_assignments可能导致异常。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.19% · P9

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< c93bc959788ed9a1af7df57cb539837bdf790cee affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 114a977e0f6bf278e05eade055e13fc271f69cf7 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 621d5a3ef0231ab242f2d31eecec40c38ca609c5 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 2f535517b5611b7221ed478527e4b58e29536ddf affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 45e9444b3b97eaf51a5024f1fea92f44f39b50c6 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 5581e694d3a1c2f32c5a51d745c55b107644e1f8 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< 47cb5d26f61d80c805d7de4106451153779297a1 affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588< af4db5a35a4ef7a68046883bfd12468007db38f1 affected
… +10 more rows
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I. Basic Information for CVE-2025-38391

Vulnerability Information
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Vulnerability Title
usb: typec: altmodes/displayport: do not index invalid pin_assignments
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: do not index invalid pin_assignments A poorly implemented DisplayPort Alt Mode port partner can indicate that its pin assignment capabilities are greater than the maximum value, DP_PIN_ASSIGN_F. In this case, calls to pin_assignment_show will cause a BRK exception due to an out of bounds array access. Prevent for loop in pin_assignment_show from accessing invalid values in pin_assignments by adding DP_PIN_ASSIGN_MAX value in typec_dp.h and using i < DP_PIN_ASSIGN_MAX as a loop condition.
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于索引无效的pin_assignments可能导致异常。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 ~ c93bc959788ed9a1af7df57cb539837bdf790cee -
Linux Linux 4.19 -

II. Public POCs for CVE-2025-38391

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III. Intelligence Information for CVE-2025-38391

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Same Patch Batch · Linux · 2025-07-25 · 114 CVEs total

CVE-2025-38429 10.0 CRITICAL bus: mhi: ep: Update read pointer only after buffer is written
CVE-2025-38430 9.8 CRITICAL nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request
CVE-2025-38411 9.8 CRITICAL netfs: Fix double put of request
CVE-2025-38439 9.8 CRITICAL bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT
CVE-2025-38365 9.1 CRITICAL btrfs: fix a race between renames and directory logging
CVE-2025-38377 8.8 HIGH rose: fix dangling neighbour pointers in rose_rt_device_down()
CVE-2025-38437 8.8 HIGH ksmbd: fix potential use-after-free in oplock/lease break ack
CVE-2025-38367 8.8 HIGH LoongArch: KVM: Avoid overflow with array index
CVE-2025-38375 8.4 HIGH virtio-net: ensure the received length does not exceed allocated size
CVE-2025-38395 8.4 HIGH regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods
CVE-2025-38435 7.8 HIGH riscv: vector: Fix context save/restore with xtheadvector
CVE-2025-38440 7.8 HIGH net/mlx5e: Fix race between DIM disable and net_dim()
CVE-2025-38434 7.8 HIGH Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
CVE-2025-38449 7.8 HIGH drm/gem: Acquire references on GEM handles for framebuffers
CVE-2025-38382 7.8 HIGH btrfs: fix iteration of extrefs during log replay
CVE-2025-38447 7.8 HIGH mm/rmap: fix potential out-of-bounds page table access during batched unmap
CVE-2025-38396 7.8 HIGH fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass
CVE-2025-38401 7.8 HIGH mtk-sd: Prevent memory corruption from DMA map failure
CVE-2025-38408 7.8 HIGH genirq/irq_sim: Initialize work context pointers properly
CVE-2025-38398 7.8 HIGH spi: spi-qpic-snand: reallocate BAM transactions

Showing top 20 of 114 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38391

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