{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23399","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:46.012Z","datePublished":"2026-03-28T07:16:09.888Z","dateUpdated":"2026-05-11T22:06:09.495Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:06:09.495Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnf_tables: nft_dynset: fix possible stateful expression memleak in error path\n\nIf cloning the second stateful expression in the element via GFP_ATOMIC\nfails, then the first stateful expression remains in place without being\nreleased.\n\n   unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n     comm \"softirq\", pid 0, jiffies 4294931867\n     hex dump (first 16 bytes on cpu 3):\n       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n     backtrace (crc 0):\n       pcpu_alloc_noprof+0x453/0xd80\n       nft_counter_clone+0x9c/0x190 [nf_tables]\n       nft_expr_clone+0x8f/0x1b0 [nf_tables]\n       nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n       nft_rhash_update+0x236/0x11c0 [nf_tables]\n       nft_dynset_eval+0x11f/0x670 [nf_tables]\n       nft_do_chain+0x253/0x1700 [nf_tables]\n       nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n       nf_hook_slow+0xaa/0x1e0\n       ip_local_deliver+0x209/0x330"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/net/netfilter/nf_tables.h","net/netfilter/nf_tables_api.c","net/netfilter/nft_dynset.c"],"versions":[{"version":"563125a73ac30d7036ae69ca35c40500562c1de4","lessThan":"e6661add2d9c6913e1dad97336595e23a2bed195","status":"affected","versionType":"git"},{"version":"563125a73ac30d7036ae69ca35c40500562c1de4","lessThan":"d1354873cbe3b344899c4311ac05897fd83e3f21","status":"affected","versionType":"git"},{"version":"563125a73ac30d7036ae69ca35c40500562c1de4","lessThan":"31641c682db73353e4647e40735c7f2a75ff58ef","status":"affected","versionType":"git"},{"version":"563125a73ac30d7036ae69ca35c40500562c1de4","lessThan":"c88a9fd26cee365bec932196f76175772a941cca","status":"affected","versionType":"git"},{"version":"563125a73ac30d7036ae69ca35c40500562c1de4","lessThan":"0548a13b5a145b16e4da0628b5936baf35f51b43","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/net/netfilter/nf_tables.h","net/netfilter/nf_tables_api.c","net/netfilter/nft_dynset.c"],"versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","status":"unaffected","versionType":"semver"},{"version":"6.6.136","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.78","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.20","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.10","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.6.136"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.18.20"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.19.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195"},{"url":"https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21"},{"url":"https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef"},{"url":"https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca"},{"url":"https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43"}],"title":"nf_tables: nft_dynset: fix possible stateful expression memleak in error path","x_generator":{"engine":"bippy-1.2.0"}}}}