CVE-2025-38183

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Source
https://cve.org/CVERecord?id=CVE-2025-38183
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38183.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-38183
Downstream
Related
Published
2025-07-04T13:37:10.253Z
Modified
2026-03-11T07:49:33.703986Z
Summary
net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()
Details

In the Linux kernel, the following vulnerability has been resolved:

net: lan743x: fix potential out-of-bounds write in lan743xptpioeventclock_get()

Before calling lan743xptpioeventclockget(), the 'channel' value is checked against the maximum value of PCI11X1XPTPIOMAXCHANNELS(8). This seems correct and aligns with the PTP interrupt status register (PTPINT_STS) specifications.

However, lan743xptpioeventclockget() writes to ptp->extts[] with only LAN743XPTPNEXTTS(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 LAN743XPTPN_EXTTS to 8.

Detected using the static analysis tool - Svace.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38183.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
60942c397af6094c04406b77982314dfe69ef3c4
Fixed
e8d48201a132f4aab31351c19a802c5a5ae820fa
Fixed
66bba1fd5bad548c03f7e42669a59f3f4d8211cc
Fixed
41017bd66c533f7af912c58273c7dfd5de0065d4
Fixed
4da0d23516857230b8e9b3022e25422ee2e2ba80
Fixed
e353b0854d3a1a31cb061df8d022fbfea53a0f24

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38183.json"