Bug 1837790 - CVE-2020-0110 kernel: out of boudns write when writing 0 bytes to /proc/pressure/ PSI files
Summary: CVE-2020-0110 kernel: out of boudns write when writing 0 bytes to /proc/pres...
Keywords:
Status: CLOSED DUPLICATE of bug 1836936
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1836943 1837791
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-05-20 01:58 UTC by Wade Mealing
Modified: 2021-02-16 20:01 UTC (History)
20 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-05-20 02:02:54 UTC
Embargoed:

Attachments (Terms of Use)

Description Wade Mealing 2020-05-20 01:58:20 UTC 
A flaw was found in the Linux kernels implementation of Pressure Stall Information reporting and notification in files in the /proc/filesystem

Issuing write() with count parameter set to 0 on any file under /proc/pressure/ will cause an OOB write to a buffer allocated in kernel.  This could allow for memory corruption or other unspecified consequences.
Comment 1 Wade Mealing 2020-05-20 01:58:24 UTC 
External References:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6fcca0fa48118e6d63733eb4644c6cd880c15b8f
Comment 2 Wade Mealing 2020-05-20 01:59:48 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1837791]
Comment 3 Wade Mealing 2020-05-20 02:02:54 UTC 

*** This bug has been marked as a duplicate of bug 1836936 ***
Note You need to log in before you can comment on or make changes to this bug.