CVE-2025-38183

HIGH EPSS 5.0%
Published Jul 4, 202512mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jul 4, 2025 12mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get() Before calling lan743x_ptp_io_event_clock_get(), the 'channel' value is checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8). This seems correct and aligns with the PTP interrupt status register (PTP_INT_STS) specifications. However, lan743x_ptp_io_event_clock_get() writes to ptp->extts[] with only LAN743X_PTP_N_EXTTS(4) elements, using channel as an index: lan743x_ptp_io_event_clock_get(..., u8 channel,...) { ... /* Update Local timestamp */ extts = &ptp->extts[channel]; extts->ts.tv_sec = sec; ... } To avoid an out-of-bounds write and utilize all the supported GPIO inputs, set LAN743X_PTP_N_EXTTS to 8. Detected using the static analysis tool - Svace.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.18  –  <6.1.142
linuxlinux_kernel*≥6.2  –  <6.6.95
linuxlinux_kernel*≥6.7  –  <6.12.35
linuxlinux_kernel*≥6.13  –  <6.15.4
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/41017bd66c533f7af912c58273c7dfd5de0065d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4da0d23516857230b8e9b3022e25422ee2e2ba80
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/66bba1fd5bad548c03f7e42669a59f3f4d8211cc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e353b0854d3a1a31cb061df8d022fbfea53a0f24
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e8d48201a132f4aab31351c19a802c5a5ae820fa
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/41017bd66c533f7af912c58273c7dfd5de0065d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4da0d23516857230b8e9b3022e25422ee2e2ba80
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/66bba1fd5bad548c03f7e42669a59f3f4d8211cc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e353b0854d3a1a31cb061df8d022fbfea53a0f24
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e8d48201a132f4aab31351c19a802c5a5ae820fa
    Patch