Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d646960f7986fefb460a2b062d5ccc8ccfeacc3a to < b2a23529593d011fb433a3d711fc597ed6a6bd2faffectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < 665315df9c3486cb213fc44d83cc8bcd47fe0d26affectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < 9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6affectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < 0eb1263a3b8c36418c9ba295c9ab3abed664edbfaffectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < 796e0cac058252d0ad34ebe288e6f7979b5fc9b2affectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < 8977fad2b3c6eefd414131168d597c5d1d5e1abfaffectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < ff3d9e8f7244293e303f7b6ef70774291c7c27e9affectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < aba4712e8f0381cd5d196534ce2ad082626a5ab6affectedd646960f7986fefb460a2b062d5ccc8ccfeacc3a to < 2b5dd4632966c39da6ba74dbc8689b309065e82caffected
Linux Linux
Default version status: affected
3.3affected0 to < 3.3unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.136 to ≤ 6.6.*unaffected6.12.83 to ≤ 6.12.*unaffected6.18.24 to ≤ 6.18.*unaffected6.19.14 to ≤ 6.19.*unaffected7.0.1 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/b2a23529593d011fb433a3d711fc597ed6a6bd2f ↗
- https://git.kernel.org/stable/c/665315df9c3486cb213fc44d83cc8bcd47fe0d26 ↗
- https://git.kernel.org/stable/c/9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6 ↗
- https://git.kernel.org/stable/c/0eb1263a3b8c36418c9ba295c9ab3abed664edbf ↗
- https://git.kernel.org/stable/c/796e0cac058252d0ad34ebe288e6f7979b5fc9b2 ↗
- https://git.kernel.org/stable/c/8977fad2b3c6eefd414131168d597c5d1d5e1abf ↗
- https://git.kernel.org/stable/c/ff3d9e8f7244293e303f7b6ef70774291c7c27e9 ↗
- https://git.kernel.org/stable/c/aba4712e8f0381cd5d196534ce2ad082626a5ab6 ↗
- https://git.kernel.org/stable/c/2b5dd4632966c39da6ba74dbc8689b309065e82c ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗