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PUBLISHED

CVE-2024-26723

lan966x: Fix crash when adding interface under a lag

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-03

Description

In the Linux kernel, the following vulnerability has been resolved: lan966x: Fix crash when adding interface under a lag There is a crash when adding one of the lan966x interfaces under a lag interface. The issue can be reproduced like this: ip link add name bond0 type bond miimon 100 mode balance-xor ip link set dev eth0 master bond0 The reason is because when adding a interface under the lag it would go through all the ports and try to figure out which other ports are under that lag interface. And the issue is that lan966x can have ports that are NULL pointer as they are not probed. So then iterating over these ports it would just crash as they are NULL pointers. The fix consists in actually checking for NULL pointers before accessing something from the ports. Like we do in other places.

Product status

Default status
unaffected

cabc9d49333d before b9357489c46c
affected

cabc9d49333d before 48fae67d8374
affected

cabc9d49333d before 2a492f01228b
affected

cabc9d49333d before 15faa1f67ab4
affected

Default status
affected

6.1
affected

Any version before 6.1
unaffected

6.1.79
unaffected

6.6.18
unaffected

6.7.6
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/b9357489c46c7a43999964628db8b47d3a1f8672

https://git.kernel.org/stable/c/48fae67d837488c87379f0c9f27df7391718477c

https://git.kernel.org/stable/c/2a492f01228b7d091dfe38974ef40dccf8f9f2f1

https://git.kernel.org/stable/c/15faa1f67ab405d47789d4702f587ec7df7ef03e

cve.org CVE-2024-26723

nvd.nist.gov CVE-2024-26723

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