PT-2024-30744 · Linux+2 · Linux Kernel+2
Published
2024-08-01
·
Updated
2025-01-09
·
CVE-2024-43887
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.10.0
Description
The vulnerability is related to the TCP-AO static key in the Linux kernel. The lifetime of the TCP-AO static key is the same as the last
tcp ao info. When the socket is destroyed, tcp ao info ceases to be with the RCU grace period, while the TCP-AO static branch is currently deferred destructed. This can cause other CPUs to see tcp ao info which is dead but soon-to-be, breaking the assumption of static key fast inc not disabled(). The issue is not theoretical and has been observed on the netdev test-bot.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Information Disclosure
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu