CVE-2022-49748 Information

Description

In the Linux kernel the following vulnerability has been resolved:

perf/x86/amd: fix potential integer overflow on shift of a int

The left shift of int 32 bit integer constant 1 is evaluated using 32 bit arithmetic and then passed as a 64 bit function argument. In the case where i is 32 or more this can lead to an overflow. Avoid this by shifting using the BIT_ULL macro instead.

Reference

https://git.kernel.org/stable/c/08245672cdc6505550d1a5020603b0a8d4a6dcc7 https://git.kernel.org/stable/c/14cc13e433e1067557435b1adbf05608d7d47a93 https://git.kernel.org/stable/c/a4d01fb87ece45d4164fd725890211ccf9a307a9 https://git.kernel.org/stable/c/f84c9b72fb200633774704d8020f769c88a4b249 https://git.kernel.org/stable/c/fbf7b0e4cef3b5470b610f14fb9faa5ee7f63954