CVE-2026-97953 Linux kernel net: stmmac - Out of Bounds Read/Write

Linux kernel net: stmmac contains a buffer overflow caused by incorrect TX descriptor availability check for TSO traffic in stmmac_tso_xmit, letting attackers cause TX ring corruption, exploit requires sending highly fragmented TSO skb.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.41% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read/Write
Impact
Denial Of Service, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Published
25 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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