CVE-2026-97963net: stmmac: initialize ptp_lock at probe time
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net: stmmac: initialize ptp_lock at probe time priv->ptp_lock is only initialized in stmmac_ptp_register(), which runs during __stmmac_open(). However, the lock is also used while the interface is down and has never been opened: tc_taprio_configure() invokes the PTP gettime64() callback to compute the EST base time when offloading a TAPRIO schedule, and stmmac_get_time() takes priv->ptp_lock. Using an uninitialized rwlock is undefined behaviour. Move the rwlock_init() to __stmmac_dvr_probe(), together with the other private locks, so that ptp_lock is always valid regardless of the interface state.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b60189e0392fa06348911077ef281eb2b1047b6a before ee33e424d4932c70f103b94a46b685923f236f65; from b60189e0392fa06348911077ef281eb2b1047b6a before 7ced87834f3a58761d4bbcabf8326478548e6a54; from b60189e0392fa06348911077ef281eb2b1047b6a before 79fb5bcc50996964e076dffbdc24b7d2c06bd957; from b60189e0392fa06348911077ef281eb2b1047b6a before 420315413b29635de1d4ea4142e410e6465260f3; from b60189e0392fa06348911077ef281eb2b1047b6a before 25cc0096efba83b4e0e6fa50f03e9543b41e9d3d; from b60189e0392fa06348911077ef281eb2b1047b6a before b1986595cf827c38ff929e22fbc9ca8f76379306; from b60189e0392fa06348911077ef281eb2b1047b6a before 0338c68e22abd2ee509ec2e32508a50896618c32 | CNA record |
References
- https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65
- https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54
- https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957
- https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3
- https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d
- https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306
- https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.