Bug 2320443 (CVE-2024-49995) - CVE-2024-49995 kernel: tipc: guard against string buffer overrun
Summary: CVE-2024-49995 kernel: tipc: guard against string buffer overrun
Keywords:
Status: NEW
Alias: CVE-2024-49995
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2320745
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-10-21 19:02 UTC by OSIDB Bzimport
Modified: 2025-05-13 08:29 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2025:6966 0 None None None 2025-05-13 08:29:45 UTC

Description OSIDB Bzimport 2024-10-21 19:02:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

tipc: guard against string buffer overrun

Smatch reports that copying media_name and if_name to name_parts may
overwrite the destination.

 .../bearer.c:166 bearer_name_validate() error: strcpy() 'media_name' too large for 'name_parts->media_name' (32 vs 16)
 .../bearer.c:167 bearer_name_validate() error: strcpy() 'if_name' too large for 'name_parts->if_name' (1010102 vs 16)

This does seem to be the case so guard against this possibility by using
strscpy() and failing if truncation occurs.

Introduced by commit b97bf3fd8f6a ("[TIPC] Initial merge")

Compile tested only.
Comment 1 Robb Gatica 2024-10-21 21:37:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102138-CVE-2024-49995-ec59@gregkh/T
Comment 2 errata-xmlrpc 2025-05-13 08:29:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966
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