Bug 2257406 (CVE-2024-0340) - CVE-2024-0340 kernel: Information disclosure in vhost/vhost.c:vhost_new_msg()
Summary: CVE-2024-0340 kernel: Information disclosure in vhost/vhost.c:vhost_new_msg()
Keywords:
Status: NEW
Alias: CVE-2024-0340
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2258356
Blocks: 2257401
TreeView+ depends on / blocked
 
Reported: 2024-01-09 11:59 UTC by Rohit Keshri
Modified: 2024-04-04 11:52 UTC (History)
45 users (show)

Fixed In Version: kernel 6.4-rc6
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in vhost_new_msg in drivers/vhost/vhost.c in the Linux kernel, which does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This issue can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.
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Description Rohit Keshri 2024-01-09 11:59:37 UTC 
A vulnerability was found in vhost_new_msg in drivers/vhost/vhost.c in the Linux kernel. This flaw does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from  the /dev/vhost-net device file.

References:
https://lore.kernel.org/lkml/5kn47peabxjrptkqa6dwtyus35ahf4pcj4qm4pumse33kxqpjw@mec4se5relrc/T/
Comment 2 Rohit Keshri 2024-01-14 17:35:41 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2258356]
Comment 4 Justin M. Forbes 2024-01-15 19:21:51 UTC 
This flaw was fixed in the 6.4 kernel rebases for Fedora.
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