What’s Vulnerable › Vulnerabilities

CVE-2022-49748: perf/x86/amd: fix potential integer overflow on shift of a int

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-27 · updated 2026-06-17
• Weakness: CWE-190

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.

Affected products

• Linux kernel: from 5.4.22 before 5.4.231; from 5.5.6 before 5.10.166; from 5.11 before 5.15.91; from 5.16 before 6.1.9; 6.2-rc1 — fixed in 5.10.166, 5.15.91, 5.4.231, 6.1.9

How to fix

Upgrade to a fixed version: Linux kernel 5.10.166, 5.15.91, 5.4.231, 6.1.9. Check the vendor advisory for mitigations.

References

• 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

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