CVE-2026-98579
Published Oct 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure nfc_genl_llc_sdreq() builds a list of TLV nodes while walking nested netlink attrs, but 3 error paths (nested-attr parse failure, TLV alloc ENOMEM, nfc_llcp_send_snl_sdreq() failure) all skip freeing what was already queued. Route them through a new free_list label, mirroring the SDRES path in the same file which already does this. Harmless on the success path too -- send_snl_sdreq() drains the list as it moves nodes, so it's already empty by the time free_list runs.
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References
Other References
https://git.kernel.org/stable/c/08d2c069239ab425fdd333784a6a3b3e034e4aa0
https://git.kernel.org/stable/c/0b01a946b0f234f5badd25968610b585a4895f08
https://git.kernel.org/stable/c/5b1eca82085134bd92cd3810b0ef003c91e3f668
https://git.kernel.org/stable/c/66f4300206b82b0b143ef0d9be90cd8d29f23a47
https://git.kernel.org/stable/c/755bfc409748d8f3df64eb0eb26926270de3dd77
https://git.kernel.org/stable/c/cbde7f5d326172d6dbb55cca0df42fa7e1ed8115
https://git.kernel.org/stable/c/d3f60a7fc291d08cd9192a3b4cd5d3a223fa7d02
https://git.kernel.org/stable/c/e43ec0191c1630f41e7043ac729ea6f1b8044a7f
Frequently Asked Questions
What is CVE-2026-98579? +
In the Linux kernel, the following vulnerability has been resolved:
nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure
nfc_genl_llc_sdreq() builds a list of TLV nodes while walking nested
netlink attrs, but 3 error paths (nested-attr parse failure, TLV alloc
ENOMEM, nfc_llcp_send_snl_sdreq() failure) all skip freeing what was
already queued.
Route them through a new free_list label, mirroring the SDRES path in
the same file which already does this. Harmless on the success path
too -- send_snl_sdreq() drains the list as it moves nodes, so it's
already empty by the time free_list runs.
How do I check if I'm vulnerable to CVE-2026-98579? +
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.