nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure

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.

Source published

18 Oct 2026 15:18:52 UTC

Source modified

19 Oct 2026 09:22:04 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

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