Bug 2263875 (CVE-2024-25744) - CVE-2024-25744 kernel: untrusted VMM can trigger int80 syscall handling
Summary: CVE-2024-25744 kernel: untrusted VMM can trigger int80 syscall handling
Keywords:
Status: NEW
Alias: CVE-2024-25744
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2264076
Blocks: 2263876
TreeView+ depends on / blocked
 
Reported: 2024-02-12 14:21 UTC by ybuenos
Modified: 2024-05-15 01:23 UTC (History)
49 users (show)

Fixed In Version: kernel 6.6.7
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel. A VMM can inject external interrupts on any arbitrary vector at any time, which may allow the guest OS to be manipulated from the VMM side.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:2845 0 None None None 2024-05-15 01:23:55 UTC
Red Hat Product Errata RHSA-2024:2846 0 None None None 2024-05-15 00:25:52 UTC

Description ybuenos 2024-02-12 14:21:11 UTC 
In the Linux kernel before 6.6.7, an untrusted VMM can trigger int80 syscall handling at any given point. This is related to arch/x86/coco/tdx/tdx.c and arch/x86/mm/mem_encrypt_amd.c.

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.7
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b82a8dbd3d2f4563156f7150c6f2ecab6e960b30
Comment 2 ybuenos 2024-02-13 18:44:01 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2264076]
Comment 4 Justin M. Forbes 2024-02-15 19:11:27 UTC 
This was fixed for Fedora with the 6.6.7 stable kernel updates.
Comment 10 errata-xmlrpc 2024-05-15 00:25:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:2846 https://access.redhat.com/errata/RHSA-2024:2846
Comment 11 errata-xmlrpc 2024-05-15 01:23:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:2845 https://access.redhat.com/errata/RHSA-2024:2845
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