CVE-2022-49748: perf/x86/amd: fix potential integer overflow on shift of a int
First published: Thu Mar 27 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.4.22<5.4.231 | |
| Linux Kernel | >=5.5.6<5.10.166 | |
| Linux Kernel | >=5.11<5.15.91 | |
| Linux Kernel | >=5.16<6.1.9 | |
| Linux Kernel | =6.2-rc1 |
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Reference Links
- https://git.kernel.org/stable/c/fbf7b0e4cef3b5470b610f14fb9faa5ee7f63954
- https://git.kernel.org/stable/c/f84c9b72fb200633774704d8020f769c88a4b249
- https://git.kernel.org/stable/c/14cc13e433e1067557435b1adbf05608d7d47a93
- https://git.kernel.org/stable/c/a4d01fb87ece45d4164fd725890211ccf9a307a9
- https://git.kernel.org/stable/c/08245672cdc6505550d1a5020603b0a8d4a6dcc7
Frequently Asked Questions
What is the severity of CVE-2022-49748?
CVE-2022-49748 is classified as a medium severity vulnerability affecting the Linux kernel.
How do I fix CVE-2022-49748?
To fix CVE-2022-49748, update your Linux kernel to the latest stable version that addresses this vulnerability.
What systems are affected by CVE-2022-49748?
CVE-2022-49748 specifically affects systems running the affected versions of the Linux kernel.
What is the impact of CVE-2022-49748?
CVE-2022-49748 can potentially lead to an integer overflow that may be exploited by an attacker to cause unexpected behavior.
Is CVE-2022-49748 remotely exploitable?
CVE-2022-49748 is not typically considered remotely exploitable, but may depend on system configuration and use cases.
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