UNKNOWN NVD
CVE-2026-97998
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: cope with concurrent instance destruction Instances are refcount
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfnetlink_log: cope with concurrent instance destruction
Instances are refcounted. However, only memory release happens on the
1 -> 0 transition; the unlink from hashes can occur with any refcount.
Uncooperative userspace can force a situation where a queue is pending
for destruction from netlink event while a different socket with same
portid processes an UNBIND request.
With right timing, this will unhash the instance again:
Oops: general protection fault, [..]
Call Trace:
<TASK>
nfulnl_recv_config+0x31a/0xd50
nfnetlink_rcv_msg+0x7c2/0xeb0
References
- https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af
- https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c
- https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16
- https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb
This unknown severity vulnerability was published on 2026-09-25 via NVD.
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