Bug 2174464 (CVE-2022-20567) - CVE-2022-20567 kernel: race in pppol2tp_release
Summary: CVE-2022-20567 kernel: race in pppol2tp_release
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-20567
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:
Blocks: 2154785
TreeView+ depends on / blocked
 
Reported: 2023-03-01 17:34 UTC by Alex
Modified: 2023-03-01 18:06 UTC (History)
42 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
A use-after-free flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP) when user closes a socket. This could allow a local user to crash the system or potentially escalate their privileges on the system.
Clone Of:
Environment:
Last Closed: 2023-03-01 17:43:47 UTC
Embargoed:

Attachments (Terms of Use)

Description Alex 2023-03-01 17:34:46 UTC 
A flaw found in the Linux Kernel. In pppol2tp_release of l2tp_ppp.c, there is a possible use after free due to a race condition. 

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d02ba2a6110c530a32926af8ad441111774d2893
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