Bug 2013097 (CVE-2021-42252) - CVE-2021-42252 kernel: memory overwrite in the kernel with potential privileges execution
Summary: CVE-2021-42252 kernel: memory overwrite in the kernel with potential privileg...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-42252
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2013098
Blocks: 2013099
TreeView+ depends on / blocked
 
Reported: 2021-10-12 06:13 UTC by Marian Rehak
Modified: 2021-10-13 15:02 UTC (History)
46 users (show)

Fixed In Version: kernel 5.14.6
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in Aspeed Low Pin Count (LPC) Bus Controller in the Linux kernel. A miss in the sanity check may allow a malicious local normal privileged user to bypass the boundary check, and map pages that are located outside the memory region reserved by the driver.
Clone Of:
Environment:
Last Closed: 2021-10-13 14:08:18 UTC


Attachments (Terms of Use)

Description Marian Rehak 2021-10-12 06:13:37 UTC
A vulnerability was found in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in Aspeed Low Pin Count (LPC) Bus Controller. A miss in the sanity check may allow a malicious local normal privileged user to bypass the boundary check, and map pages that are located outside the memory region reserved by the driver.

Reference:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b49a0e69a7b1a68c8d3f64097d06dabb770fec96

Comment 1 Marian Rehak 2021-10-12 06:14:05 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2013098]

Comment 2 Justin M. Forbes 2021-10-12 16:55:22 UTC
This was fixed for Fedora with the 5.13.19 stable updates.

Comment 6 Product Security DevOps Team 2021-10-13 14:08:18 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-42252


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