CVE-2025-38183
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Analyzed
Affected
- Linux Kernel < 6.1.142
- Linux Kernel < 6.6.95
- Linux Kernel < 6.12.35
- Linux Kernel < 6.15.4
- Linux Kernel 6.16
- Debian Linux 11.0
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-38183.md and follow it. Check whether this project is affected by CVE-2025-38183. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/41017bd66c533f7af912c58273c7dfd5de0065d4
- https://git.kernel.org/stable/c/4da0d23516857230b8e9b3022e25422ee2e2ba80
- https://git.kernel.org/stable/c/66bba1fd5bad548c03f7e42669a59f3f4d8211cc
- https://git.kernel.org/stable/c/e353b0854d3a1a31cb061df8d022fbfea53a0f24
- https://git.kernel.org/stable/c/e8d48201a132f4aab31351c19a802c5a5ae820fa
References
- https://git.kernel.org/stable/c/41017bd66c533f7af912c58273c7dfd5de0065d4
- https://git.kernel.org/stable/c/4da0d23516857230b8e9b3022e25422ee2e2ba80
- https://git.kernel.org/stable/c/66bba1fd5bad548c03f7e42669a59f3f4d8211cc
- https://git.kernel.org/stable/c/e353b0854d3a1a31cb061df8d022fbfea53a0f24
- https://git.kernel.org/stable/c/e8d48201a132f4aab31351c19a802c5a5ae820fa
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html