Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: prevent reg-wait speculations With *ENTER_EXT_ARG_REG instead of passing a user pointer with arguments for the waiting loop the user can specify an offset into a pre-mapped region of memory, in which case the [offset, offset + sizeof(io_uring_reg_wait)) will be intepreted as the argument. As we address a kernel array using a user given index, it'd be a subject to speculation type of exploits. Use array_index_nospec() to prevent that. Make sure to pass not the full region size but truncate by the maximum offset allowed considering the structure size.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.13, < 6.13.2 |
References
- https://git.kernel.org/stable/c/29b95ac917927ce9f95bf38797e16333ecb489b1Patch
- https://git.kernel.org/stable/c/2a6de94df7bfa76d9850443547e7b3333f63a16aPatch
FAQ
What is CVE-2024-58000?
CVE-2024-58000 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: io_uring: prevent reg-wait speculations With *ENTER_EXT_ARG_REG instead of passing a user pointer with arguments for the waiting l...
How severe is CVE-2024-58000?
CVE-2024-58000 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-58000?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.