CVE-2022-50234

Summary

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

io_uring/af_unix: defer registered files gc to io_uring release

Instead of putting io_uring's registered files in unix_gc() we want it to be done by io_uring itself. The trick here is to consider io_uring registered files for cycle detection but not actually putting them down. Because io_uring can't register other ring instances, this will remove all refs to the ring file triggering the ->release path and clean up with io_ring_ctx_free().

[axboe: add kerneldoc comment to skb, fold in skb leak fix]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6b06314c47e141031be043539900d80d2c7ba10f < 04df9719df1865f6770af9bc7880874af0e594b2affected
LinuxLinux6b06314c47e141031be043539900d80d2c7ba10f < c378c479c5175833bb22ff71974cda47d7b05401affected
LinuxLinux6b06314c47e141031be043539900d80d2c7ba10f < 813d8fe5d30388f73a21d3a2bf46b0a1fd72498caffected
LinuxLinux6b06314c47e141031be043539900d80d2c7ba10f < b4293c01ee0d0ecdd3cb5801e13f62271144667aaffected
LinuxLinux6b06314c47e141031be043539900d80d2c7ba10f < 75e94c7e8859e58aadc15a98cc9704edff47d4f2affected
LinuxLinux6b06314c47e141031be043539900d80d2c7ba10f < 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80affected
LinuxLinux5.1affected
LinuxLinux0 < 5.1unaffected
LinuxLinux5.4.220 <= 5.4.*unaffected
LinuxLinux5.10.150 <= 5.10.*unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References