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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.

PUBLISHED Reserved 2026-01-13 | Published 2026-02-14 | Updated 2026-02-14 | Assigner Linux

Product status

Default status
unaffected

0d58cdc902dace2298406b3972def04f55e3d775 (git) before 88037973c8ef6032bf84e9955595f8b20bc14c21
affected

0d58cdc902dace2298406b3972def04f55e3d775 (git) before 8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9
affected

Default status
affected

6.16
affected

Any version before 6.16
unaffected

6.18.8 (semver)
unaffected

6.19 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/88037973c8ef6032bf84e9955595f8b20bc14c21

git.kernel.org/...c/8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9

cve.org (CVE-2026-23122)

nvd.nist.gov (CVE-2026-23122)

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