CVE-2024-46774

HighCVSS 7.1/10Last modified Jun 17, 2026

Description

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

powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()

Smatch warns:

arch/powerpc/kernel/rtas.c:1932 __do_sys_rtas() warn: potential spectre issue 'args.args' [r] (local cap)

The 'nargs' and 'nret' locals come directly from a user-supplied buffer and are used as indexes into a small stack-based array and as inputs to copy_to_user() after they are subject to bounds checks.

Use array_index_nospec() after the bounds checks to clamp these values for speculative execution.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-787

Affected software

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d2834ff1d9641a8695a09ea79cd901c7b6d4d05f; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a262c2dc833f2fe1bd5c53a4d899e7077d3b1da9; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b137af795399d8b657bad1646c18561530f35ed1; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1f1feff02e9da0dd0cdb195c428c42b5f9b6c771; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 68d8156480940b79227d58865ec5d2947b9384a8; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0974d03eb479384466d828d65637814bee6b26d7
LinuxLinux2.6.12

References

Timeline

Published
Sep 18, 2024
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2024-46774: High severity, CVSS 7.1 | Vulnix