AZL-83822
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-83822.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-83822
- Upstream
- Published
- 2026-04-24T15:16:42Z
- Modified
- 2026-08-28T17:47:38Z
- Summary
- CVE-2026-31629 affecting package kernel for versions less than 6.6.137.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
nfc: llcp: add missing return after LLCP_CLOSED checks
In nfc_llcp_recv_hdlc() and nfc_llcp_recv_disc(), when the socket state is LLCP_CLOSED, the code correctly calls release_sock() and nfc_llcp_sock_put() but fails to return. Execution falls through to the remainder of the function, which calls release_sock() and nfc_llcp_sock_put() again. This results in a double release_sock() and a refcount underflow via double nfc_llcp_sock_put(), leading to a use-after-free.
Add the missing return statements after the LLCP_CLOSED branches in both functions to prevent the fall-through.
- References