CVE-2022-49672

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: tun: unlink NAPI from device on destruction

Syzbot found a race between tun file and device destruction. NAPIs live in struct tun_file which can get destroyed before the netdev so we have to del them explicitly. The current code is missing deleting the NAPI if the queue was detached first.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux943170998b200190f99d3fe7e771437e2c51f319 < 82e729aee59acefe135fceffadcbc5b86dd4f1b9affected
LinuxLinux943170998b200190f99d3fe7e771437e2c51f319 < a8cf919022373c97a84fe596bbea544f909c485daffected
LinuxLinux943170998b200190f99d3fe7e771437e2c51f319 < bec1be0a745ab420718217e3e0d9542a75108989affected
LinuxLinux943170998b200190f99d3fe7e771437e2c51f319 < 8145f77d38de4f88b8a69e1463f5c09ba189d77caffected
LinuxLinux943170998b200190f99d3fe7e771437e2c51f319 < 8661d4b8faa2f7ee7a559969c0a7c57f077b1728affected
LinuxLinux943170998b200190f99d3fe7e771437e2c51f319 < 3b9bc84d311104906d2b4995a9a02d7b7ddab2dbaffected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux4.19.251 <= 4.19.*unaffected
LinuxLinux5.4.204 <= 5.4.*unaffected
LinuxLinux5.10.129 <= 5.10.*unaffected
LinuxLinux5.15.53 <= 5.15.*unaffected
LinuxLinux5.18.10 <= 5.18.*unaffected
LinuxLinux5.19 <= *unaffected

Weaknesses

References