PT-2024-26950 · Linux+9 · Linux Kernel+9
Syzbot
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Published
2024-05-15
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Updated
2025-09-29
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CVE-2024-36286
CVSS v2.0
7.5
High
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.6.37
Description
A vulnerability has been resolved in the Linux kernel related to netfilter: nfnetlink queue, where the function
nf reinject() could be called without acquiring rcu read lock(), leading to suspicious RCU usage. This issue was reported by syzbot and is associated with a WARNING message regarding suspicious RCU usage. The vulnerability is related to the instance destroy rcu() function and involves the nfqnl flush() and nfqnl reinject() functions. Technical details include the involvement of rcu lock acquire, rcu do batch, and rcu core functions, as well as spin lock bh and lockdep rcu suspicious functions.Recommendations
To resolve this issue, update the Linux kernel to version 6.6.37 or later. As a temporary workaround, consider restricting access to the
nfnetlink queue module to minimize the risk of exploitation until a patch is available.Exploit
Fix
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu