CVE-2021-46916 (GCVE-0-2021-46916)

Vulnerability from cvelistv5 – Published: 2024-02-27 06:53 – Updated: 2026-05-11 13:44
VLAI?
Title
ixgbe: Fix NULL pointer dereference in ethtool loopback test
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b02e5a0ebb172c8276cea3151942aac681f7a4a6 , < 758d19098df4b0bbca9f40d6ae6c82c9c18b9bba (git)
Affected: b02e5a0ebb172c8276cea3151942aac681f7a4a6 , < 31166efb1cee348eb6314e9c0095d84cbeb66b9d (git)
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Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.11.16 , ≤ 5.11.* (semver)
Unaffected: 5.12 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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