Bug 2210940 (CVE-2023-32269) - CVE-2023-32269 kernel: user after free in nr_listen in net/netrom/af_netrom.c
Summary: CVE-2023-32269 kernel: user after free in nr_listen in net/netrom/af_netrom.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2023-32269
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: 2193495
TreeView+ depends on / blocked
 
Reported: 2023-05-30 06:26 UTC by Rohit Keshri
Modified: 2023-05-30 13:31 UTC (History)
44 users (show)

Fixed In Version: Kerel 6.2-rc7
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in nr_listen in net/netrom/af_netrom.c in the Linux Kernel. The system must have netrom routing configured or an attacker must have the CAP_NET_ADMIN capability for this issue to be exploited.
Clone Of:
Environment:
Last Closed: 2023-05-30 11:12:26 UTC
Embargoed:


Attachments (Terms of Use)

Description Rohit Keshri 2023-05-30 06:26:08 UTC
An issue was discovered in the Linux kernel before 6.1.11. In net/netrom/af_netrom.c, there is a use-after-free because accept is also allowed for a successfully connected AF_NETROM socket. However, in order for an attacker to exploit this, the system must have netrom routing configured or the attacker must have the CAP_NET_ADMIN capability.

Refer:
https://github.com/torvalds/linux/commit/611792920925fb088ddccbe2783c7f92fdfb6b64

Comment 2 Rohit Keshri 2023-05-30 06:36:39 UTC
There was no shipped kernel version were seen affected with this problem. These files are not built in our source code.

Comment 5 Product Security DevOps Team 2023-05-30 11:12:22 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-2023-32269


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