CVE-2022-49074

Summary

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

irqchip/gic-v3: Fix GICR_CTLR.RWP polling

It turns out that our polling of RWP is totally wrong when checking for it in the redistributors, as we test the distributor bit index, whereas it is a different bit number in the RDs… Oopsie boo.

This is embarassing. Not only because it is wrong, but also because it took 8 years to notice the blunder…

Just fix the damn thing.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < c7daf1b4ad809692d5c26f33c02ed8a031066548affected
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < 3c07cc242baf83f0bddbbd9d7945d0bee56d8b57affected
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < ff24114bb08d8b90edf2aff0a4fd0689523e6c17affected
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < 7218a789abb3e033f5f3a85636ca50d9ae7b0fc9affected
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < 60e1eb4811f53f5f60c788297d978515e7a2637aaffected
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < 6fef3e3179e6ed8fecdd004ede541674ffa7749daffected
LinuxLinux021f653791ad17e03f98aaa7fb933816ae16f161 < 0df6664531a12cdd8fc873f0cac0dcb40243d3e9affected
LinuxLinux3.17affected
LinuxLinux0 < 3.17unaffected
LinuxLinux4.19.238 <= 4.19.*unaffected
LinuxLinux5.4.189 <= 5.4.*unaffected
LinuxLinux5.10.111 <= 5.10.*unaffected
LinuxLinux5.15.34 <= 5.15.*unaffected
LinuxLinux5.16.20 <= 5.16.*unaffected
LinuxLinux5.17.3 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

References