UNKNOWN NVD
CVE-2026-98793
In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: reject invalid NAT manipulation types As bpf_ct_set_nat_info() is not vali
In the Linux kernel, the following vulnerability has been resolved:
netfilter: bpf: reject invalid NAT manipulation types
As bpf_ct_set_nat_info() is not validating the NAT manipulation type a
wrong value can be passed directly to nf_nat_setup_info(). This triggers
the WARN_ON() at nf_nat_setup_info() and if panic_on_warn isn't set,
then IPS_SRC_NAT_DONE is set without adding nat_bysource and conntrack
cleanup tries to unlink an uninitialized hlist node.
Fix this by checking that NAT manipulation type is correct before
calling nf_nat_setup_info(). In addition, if the WARN_ON is hit, return
NF_DROP instead of continuing with the processing to avoid similar
situations in the future.
References
- https://git.kernel.org/stable/c/16d464013ec2267b00a83f4bfbb97b3ecc63bfa7
- https://git.kernel.org/stable/c/58108f05b0502448f6bb612ee2eccc63bd6449cb
- https://git.kernel.org/stable/c/ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058
- https://git.kernel.org/stable/c/f6143ae109df56d51d5536e813deb19eee7a6205
This unknown severity vulnerability was published on 2026-10-18 via NVD.
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