CVE-2024-46774: powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
First published: Wed Sep 18 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.10.10 | |
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.115-1<=6.1.119-1 | 6.11.10-1 6.12.5-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/68d8156480940b79227d58865ec5d2947b9384a8
- https://git.kernel.org/stable/c/0974d03eb479384466d828d65637814bee6b26d7
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46774
- https://nvd.nist.gov/vuln/detail/CVE-2024-46774
- https://launchpad.net/bugs/cve/CVE-2024-46774
- https://security-tracker.debian.org/tracker/CVE-2024-46774
- https://ubuntu.com/security/CVE-2024-46774
- https://git.kernel.org/linus/0974d03eb479384466d828d65637814bee6b26d7
- agent/title
- agent/first-publish-date
- agent/type
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- agent/remedy
- collector/launchpad-cve
- source/Launchpad
- collector/nvd-cve
- agent/references
- agent/author
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- package-manager/debian