CVE-2026-98498
Published Oct 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get() When the reverse entry is found but its counter is already being released, refcount_inc_not_zero() fails and the reference taken by mlx5_tc_ct_entry_get() is never dropped before falling through to create_counter. Drop it so the reverse entry is not kept alive forever by a shared counter lookup that did not use it.
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References
Other References
https://git.kernel.org/stable/c/0bf6bb567f0edaa771e7dd208ef98da50e6a4485
https://git.kernel.org/stable/c/1f13989a0704bd98cab09f9bee63e2c8a98ad4dd
https://git.kernel.org/stable/c/288721013605b4e0304e10f6a087b77f71cfad11
https://git.kernel.org/stable/c/598daa5f95883f881a54967da40ce0fdfc1fdaa8
https://git.kernel.org/stable/c/60eab87d0a798070bf5a856b1d9e5785ce92da53
https://git.kernel.org/stable/c/79a3257280a335bbebbcd10d3895e8468bdcd6ae
https://git.kernel.org/stable/c/99d8dc51663747078c031acac32edc6d90c8f1f7
https://git.kernel.org/stable/c/c45c997d0c27359b502587897f775c5a277f0bd4
Frequently Asked Questions
What is CVE-2026-98498? +
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()
When the reverse entry is found but its counter is already being
released, refcount_inc_not_zero() fails and the reference taken by
mlx5_tc_ct_entry_get() is never dropped before falling through to
create_counter. Drop it so the reverse entry is not kept alive forever
by a shared counter lookup that did not use it.
How do I check if I'm vulnerable to CVE-2026-98498? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.