Bug 2176035 (CVE-2023-1476) - CVE-2023-1476 kpatch: mm/mremap.c: incomplete fix for CVE-2022-41222
Summary: CVE-2023-1476 kpatch: mm/mremap.c: incomplete fix for CVE-2022-41222
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2023-1476
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Joe Lawrence
QA Contact:
URL:
Whiteboard:
Depends On: 2176036 2176037
Blocks: 2128683
TreeView+ depends on / blocked
 
Reported: 2023-03-07 08:44 UTC by Alex
Modified: 2023-11-03 07:52 UTC (History)
7 users (show)

Fixed In Version: Kernel 5.14-rc1
Doc Type: No Doc Update
Doc Text:
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.
Clone Of:
Environment:
Last Closed: 2023-04-05 20:39:24 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Gitlab redhat/prdsc/rhel/src/kpatch rhel-8 merge_requests 93 0 None None None 2023-03-20 19:29:50 UTC
Red Hat Product Errata RHSA-2023:1659 0 None None None 2023-04-05 14:05:54 UTC

Description Alex 2023-03-07 08:44:38 UTC 
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.

Refer:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2
Comment 6 errata-xmlrpc 2023-04-05 14:05:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:1659 https://access.redhat.com/errata/RHSA-2023:1659
Comment 7 Product Security DevOps Team 2023-04-05 20:39:23 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-2023-1476
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