CVE-2026-97963net: stmmac: initialize ptp_lock at probe time
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 24 days later
· 24 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < ee33e424d4932c70f103b94a46b685923f236f65
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < 7ced87834f3a58761d4bbcabf8326478548e6a54
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < 79fb5bcc50996964e076dffbdc24b7d2c06bd957
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < 420315413b29635de1d4ea4142e410e6465260f3
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < 25cc0096efba83b4e0e6fa50f03e9543b41e9d3d
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < b1986595cf827c38ff929e22fbc9ca8f76379306
- affected b60189e0392fa06348911077ef281eb2b1047b6a – < 0338c68e22abd2ee509ec2e32508a50896618c32
- affected 5.6
- unaffected < 5.6
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.7 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/ee33e424d4932c70f103b94a46b685923f236f65 (opens in a new tab)
- https://git.kernel.org/stable/c/7ced87834f3a58761d4bbcabf8326478548e6a54 (opens in a new tab)
- https://git.kernel.org/stable/c/79fb5bcc50996964e076dffbdc24b7d2c06bd957 (opens in a new tab)
- https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3 (opens in a new tab)
- https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d (opens in a new tab)
- https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306 (opens in a new tab)
- https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86817 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-97963)Record last updated .