In the Linux kernel, the following vulnerability has been resolved: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 8.8 | High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU all versions |
| Linux | Linux | Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU all versions |
| Linux | Linux | n/a |
| Linux | Linux | n/a |