Bug 1220435 (CVE-2021-46916) - VUL-0: CVE-2021-46916: kernel-source,kernel-source-azure,kernel-source-rt: ixgbe: NULL pointer dereference in ethtool loopback test
Summary: VUL-0: CVE-2021-46916: kernel-source,kernel-source-azure,kernel-source-rt: ix...
Status: RESOLVED FIXED
Alias: CVE-2021-46916
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P5 - None : Normal
Target Milestone: ---
Assignee: Kernel Bugs
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/395260/
Whiteboard: CVSSv3.1:SUSE:CVE-2021-46916:4.4:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-02-27 11:50 UTC by SMASH SMASH
Modified: 2024-02-27 11:51 UTC (History)
1 user (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2024-02-27 11:50:03 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ixgbe: Fix NULL pointer dereference in ethtool loopback test

The ixgbe driver currently generates a NULL pointer dereference when
performing the ethtool loopback test. This is due to the fact that there
isn't a q_vector associated with the test ring when it is setup as
interrupts are not normally added to the test rings.

To address this I have added code that will check for a q_vector before
returning a napi_id value. If a q_vector is not present it will return a
value of 0.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46916
https://www.cve.org/CVERecord?id=CVE-2021-46916
https://git.kernel.org/stable/c/31166efb1cee348eb6314e9c0095d84cbeb66b9d
https://git.kernel.org/stable/c/758d19098df4b0bbca9f40d6ae6c82c9c18b9bba
Comment 1 Carlos López 2024-02-27 11:51:07 UTC 
Already fixed everywhere relevant (cve/linux-5.14, SLE15-SP6, stable and master). Closing.