CVE-2026-97963
CVE CVE-2026-97963EUVD EUVD-2026-86817Published 2026-09-25T10:23:06.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.12.111; b60189e0392fa06348911077ef281eb2b1047b6a <420315413b29635de1d4ea4142e410e6465260f3; patch: 7.2.7; b60189e0392fa06348911077ef281eb2b1047b6a <0338c68e22abd2ee509ec2e32508a50896618c32; patch: 6.18.53; b60189e0392fa06348911077ef281eb2b1047b6a <25cc0096efba83b4e0e6fa50f03e9543b41e9d3d; b60189e0392fa06348911077ef281eb2b1047b6a <b1986595cf827c38ff929e22fbc9ca8f76379306; patch: 0; 5.6; patch: 7.3-rc3
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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