CVE-2024-46774
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-46774
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-46774.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-46774
- Downstream
- Related
- Published
- 2024-09-18T08:15:05Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 _dosys_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 copytouser() after they are subject to bounds checks.
Use arrayindexnospec() after the bounds checks to clamp these values for speculative execution.
- References
-
- https://git.kernel.org/stable/c/0974d03eb479384466d828d65637814bee6b26d7
- https://git.kernel.org/stable/c/68d8156480940b79227d58865ec5d2947b9384a8
- https://git.kernel.org/stable/c/1f1feff02e9da0dd0cdb195c428c42b5f9b6c771
- https://git.kernel.org/stable/c/a262c2dc833f2fe1bd5c53a4d899e7077d3b1da9
- https://git.kernel.org/stable/c/b137af795399d8b657bad1646c18561530f35ed1
- https://git.kernel.org/stable/c/d2834ff1d9641a8695a09ea79cd901c7b6d4d05f