CVE-2024-50017 — Incorrect Calculation in Linux
Severity
5.5MEDIUMNVD
OSV8.8
EPSS
0.0%
top 95.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 21
Latest updateApr 28
Description
In the Linux kernel, the following vulnerability has been resolved:
x86/mm/ident_map: Use gbpages only where full GB page should be mapped.
When ident_pud_init() uses only GB pages to create identity maps, large
ranges of addresses not actually requested can be included in the resulting
table; a 4K request will map a full GB. This can include a lot of extra
address space past that requested, including areas marked reserved by the
BIOS. That allows processor speculation into reserved regions, t…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6