Bug 1894552 (CVE-2020-25671) - CVE-2020-25671 kernel: refcount leak in llcp_sock_connect()
Summary: CVE-2020-25671 kernel: refcount leak in llcp_sock_connect()
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-25671
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: 1894553 1911191
Blocks: 1890493 1939824
TreeView+ depends on / blocked
 
Reported: 2020-11-04 13:56 UTC by msiddiqu
Modified: 2021-06-23 14:50 UTC (History)
45 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel’s NFC LLCP protocol implementation in the way the user triggers the llcp_sock_connect() function. This flaw allows a local user to crash the system.
Clone Of:
Environment:
Last Closed: 2020-11-04 14:13:08 UTC
Embargoed:

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Description msiddiqu 2020-11-04 13:56:45 UTC 
A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.

References:

https://www.openwall.com/lists/oss-security/2020/11/01/1
Comment 1 msiddiqu 2020-11-04 13:57:45 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1894553]
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