CVE-2025-39908

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Source
https://cve.org/CVERecord?id=CVE-2025-39908
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39908.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-39908
Downstream
Published
2025-10-01T07:44:31.904Z
Modified
2026-04-02T12:48:12.600670Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
net: dev_ioctl: take ops lock in hwtstamp lower paths
Details

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

net: dev_ioctl: take ops lock in hwtstamp lower paths

ndo hwtstamp callbacks are expected to run under the per-device ops lock. Make the lower get/set paths consistent with the rest of ndo invocations.

Kernel log: WARNING: CPU: 13 PID: 51364 at ./include/net/netdev_lock.h:70 __netdevupdatefeatures+0x4bd/0xe60 ... RIP: 0010:__netdevupdatefeatures+0x4bd/0xe60 ... Call Trace: <TASK> netdevupdatefeatures+0x1f/0x60 mlx5hwtstampset+0x181/0x290 [mlx5core] mlx5ehwtstampset+0x19/0x30 [mlx5core] devsethwtstampphylib+0x9f/0x220 devsethwtstampphylib+0x9f/0x220 devsethwtstamp+0x13d/0x240 devioctl+0x12f/0x4b0 sockioctl+0x171/0x370 __x64sysioctl+0x3f7/0x900 ? _syssetsockopt+0x69/0xb0 dosyscall64+0x6f/0x2e0 entrySYSCALL64afterhwframe+0x4b/0x53 ... </TASK> .... ---[ end trace 0000000000000000 ]---

Note that the mlx5hwtstampset and mlx5ehwtstampset functions shown in the trace come from an in progress patch converting the legacy ioctl to ndohwtstampget/set and are not present in mainline.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39908.json",
    "cna_assigner": "Linux"
}
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
ffb7ed19ac0a9fa9ea79af1d7b42c03a10da98a5
Fixed
2d92fa0cdc02291de57f72170e8b60cef0cf5372
Fixed
686cab5a18e443e1d5f2abb17bed45837836425f

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39908.json"