CVE-2026-99029 net: sparx5: free the matchall entry on destroy
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-99029?
CVE-2026-99029 is a vulnerability in Linux, published on 23 Oct 2026.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: sparx5: free the matchall entry on destroy
sparx5_tc_matchall_replace() allocates a struct sparx5_mall_entry for every offloaded matchall filter and adds it to sparx5->mall_entries. sparx5_tc_matchall_destroy() removes the entry from the list, but never frees it, so the entry of every deleted mirror and goto matchall filter is leaked.
Free the entry after unlinking it.
The leak was discovered by an AI code review agent, and reproduced with kmemleak on a lan969x EV board (EV23X71A) by repeatedly adding and deleting matchall mirror and goto filters. With the fix, kmemleak no longer reports the leak.
Which versions are affected by CVE-2026-99029?
How do I fix CVE-2026-99029?
Upgrade to a fixed version.
Is CVE-2026-99029 being exploited?
There is no known exploitation of CVE-2026-99029 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-99029, DEBIAN-CVE-2026-99029, GHSA-v4vf-8pf4-46v5, UBUNTU-CVE-2026-99029.