Bug 2078456 (CVE-2022-29582) - CVE-2022-29582 kernel: Race condition that allows container escape to system root
Summary: CVE-2022-29582 kernel: Race condition that allows container escape to system ...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-29582
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: 2078476
Blocks: 2078145
TreeView+ depends on / blocked
 
Reported: 2022-04-25 11:36 UTC by Alex
Modified: 2022-05-11 09:33 UTC (History)
48 users (show)

Fixed In Version: kernel 5.18 rc2
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel’s io_uring interface subsystem in the way a user triggers a race condition between timeout flush and removal. This flaw allows a local user to crash or escalate their privileges on the system.
Clone Of:
Environment:
Last Closed: 2022-04-25 20:46:00 UTC


Attachments (Terms of Use)

Description Alex 2022-04-25 11:36:02 UTC
A flaw use-after-free found in Linux Kernel fs/io_uring.c that is result of race condition in io_uring timeouts.
This flaw may allow a local attacker to escalate privileges.

References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e677edbcabee849bfdd43f1602bccbecf736a646
https://www.openwall.com/lists/oss-security/2022/04/22/3

Comment 2 Alex 2022-04-25 12:34:42 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2078476]

Comment 3 Product Security DevOps Team 2022-04-25 20:45:56 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-2022-29582

Comment 4 Justin M. Forbes 2022-04-28 12:37:39 UTC
This was fixed for Fedora with the 5.16.20 stable kernels (and in the 5.17.3 F36 kernel)


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