UBUNTU-CVE-2024-26723
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.
02 / AFFECTED SOFTWARE
Affected packages
12 explicit affected versions
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37 explicit affected versions
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51 explicit affected versions
13 explicit affected versions
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10 explicit affected versions
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1 explicit affected versions
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6 explicit affected versions
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12 explicit affected versions
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12 explicit affected versions
26 explicit affected versions
23 explicit affected versions
5 explicit affected versions
3 explicit affected versions
26 explicit affected versions
12 explicit affected versions
44 explicit affected versions
4 explicit affected versions
4 explicit affected versions
16 explicit affected versions
9 explicit affected versions
12 explicit affected versions
13 explicit affected versions
7 explicit affected versions
7 explicit affected versions
10 explicit affected versions
11 explicit affected versions
14 explicit affected versions
18 explicit affected versions
3 explicit affected versions
16 explicit affected versions
43 explicit affected versions
11 explicit affected versions
35 explicit affected versions
12 explicit affected versions
6 explicit affected versions
12 explicit affected versions
50 explicit affected versions
12 explicit affected versions
9 explicit affected versions
27 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/15faa1f67ab405d47789d4702f587ec7df7ef03e
- https://git.kernel.org/stable/c/15faa1f67ab405d47789d4702f587ec7df7ef03e
- https://git.kernel.org/stable/c/2a492f01228b7d091dfe38974ef40dccf8f9f2f1
- https://git.kernel.org/stable/c/48fae67d837488c87379f0c9f27df7391718477c
- https://git.kernel.org/stable/c/b9357489c46c7a43999964628db8b47d3a1f8672
- https://ubuntu.com/security/CVE-2024-26723
- https://ubuntu.com/security/notices/USN-6895-1
- https://ubuntu.com/security/notices/USN-6895-2
- https://ubuntu.com/security/notices/USN-6895-3
- https://ubuntu.com/security/notices/USN-6895-4
- https://ubuntu.com/security/notices/USN-6900-1
- https://www.cve.org/CVERecord?id=CVE-2024-26723