CVE-2026-23399

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> nf_tables: nft_dynset: fix possible stateful expression memleak in error path<br /> <br /> If cloning the second stateful expression in the element via GFP_ATOMIC<br /> fails, then the first stateful expression remains in place without being<br /> released.<br /> <br />   unreferenced object (percpu) 0x607b97e9cab8 (size 16):<br />     comm "softirq", pid 0, jiffies 4294931867<br />     hex dump (first 16 bytes on cpu 3):<br />       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00<br />     backtrace (crc 0):<br />       pcpu_alloc_noprof+0x453/0xd80<br />       nft_counter_clone+0x9c/0x190 [nf_tables]<br />       nft_expr_clone+0x8f/0x1b0 [nf_tables]<br />       nft_dynset_new+0x2cb/0x5f0 [nf_tables]<br />       nft_rhash_update+0x236/0x11c0 [nf_tables]<br />       nft_dynset_eval+0x11f/0x670 [nf_tables]<br />       nft_do_chain+0x253/0x1700 [nf_tables]<br />       nft_do_chain_ipv4+0x18d/0x270 [nf_tables]<br />       nf_hook_slow+0xaa/0x1e0<br />       ip_local_deliver+0x209/0x330