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Intel I226 Network Driver Buffer Size Reduced to Prevent Crashes
CVE-2026-23122
Summary
A fix has been made to the Intel I226 network driver to prevent it from freezing under heavy network traffic, which could cause data loss or system crashes. This update reduces the size of a buffer in the driver to a safer level, which should not affect network performance. Affected systems should be updated to this new version of the driver to prevent potential issues.
Original title
In the Linux kernel, the following vulnerability has been resolved:
igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue
The previous 7 KB per queue caused TX unit hangs under heavy
timesta...
Original description
In the Linux kernel, the following vulnerability has been resolved:
igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue
The previous 7 KB per queue caused TX unit hangs under heavy
timestamping load. Reducing to 5 KB avoids these hangs and matches
the TSN recommendation in I225/I226 SW User Manual Section 7.5.4.
The 8 KB "freed" by this change is currently unused. This reduction
is not expected to impact throughput, as the i226 is PCIe-limited
for small TSN packets rather than TX-buffer-limited.
igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue
The previous 7 KB per queue caused TX unit hangs under heavy
timestamping load. Reducing to 5 KB avoids these hangs and matches
the TSN recommendation in I225/I226 SW User Manual Section 7.5.4.
The 8 KB "freed" by this change is currently unused. This reduction
is not expected to impact throughput, as the i226 is PCIe-limited
for small TSN packets rather than TX-buffer-limited.
Published: 14 Feb 2026 · Updated: 10 Mar 2026 · First seen: 6 Mar 2026