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CVE-2026-43450 is an out-of-bounds read vulnerability in the Linux kernel netfilter nfnetlink_cthelper component, specifically in nfnl_cthelper_dump_table(). The flaw is caused by incorrect control flow around a restart path: a 'goto restart' target was placed after the enclosing for-loop rather than within the loop body. During netlink dump processing, if the helper pointer saved in cb->args[1] refers to an entry that is deleted between dump rounds, the '(cur != last)' comparison can fail for all entries, preventing cb->args[1] from being cleared. The loop can then terminate with cb->args[0] equal to nf_ct_helper_hsize, after which the restart jump re-enters the loop body without reapplying the bounds check. This results in an 8-byte read past the end of the nf_ct_helper_hash table. Kernel AddressSanitizer identified the issue as a slab out-of-bounds read reachable through netlink dump handling.
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A Linux kernel netfilter nfnetlink_cthelper vulnerability causing an 8-byte out-of-bounds read in nfnl_cthelper_dump_table() due to incorrect restart logic that can bypass a bounds check when a saved helper is deleted between dump rounds.
A Linux kernel netfilter vulnerability involving an out-of-bounds read in nfnl_cthelper_dump_table().
A Linux kernel netfilter vulnerability involving an out-of-bounds read in nfnl_cthelper_dump_table().
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Cross-references every affected SKU, including bundled OEM variants.
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