{"api_version":"1","generated_at":"2026-07-24T00:32:58+00:00","cve":"CVE-2026-23399","urls":{"html":"https://cve.report/CVE-2026-23399","api":"https://cve.report/api/cve/CVE-2026-23399.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23399","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23399"},"summary":{"title":"nf_tables: nft_dynset: fix possible stateful expression memleak in error path","description":"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","state":"PUBLISHED","assigner":"Linux","published_at":"2026-03-28 08:15:56","updated_at":"2026-06-01 17:16:45"},"problem_types":["CWE-401"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea","name":"https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43","name":"https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689","name":"https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195","name":"https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21","name":"https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca","name":"https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef","name":"https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23399","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23399","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563125a73ac30d7036ae69ca35c40500562c1de4 eb7bf413e59945df03d4567b73ce464eebe2f4ea git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563125a73ac30d7036ae69ca35c40500562c1de4 4357dbb1d9c35ca0b4443d71c98a48e6666f7689 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563125a73ac30d7036ae69ca35c40500562c1de4 e6661add2d9c6913e1dad97336595e23a2bed195 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563125a73ac30d7036ae69ca35c40500562c1de4 d1354873cbe3b344899c4311ac05897fd83e3f21 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.78 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.20 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.10 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"23399","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"23399","cve":"CVE-2026-23399","epss":"0.000230000","percentile":"0.061900000","score_date":"2026-04-06","updated_at":"2026-04-07 00:04:51"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/netfilter/nf_tables.h","net/netfilter/nf_tables_api.c","net/netfilter/nft_dynset.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"eb7bf413e59945df03d4567b73ce464eebe2f4ea","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"},{"lessThan":"4357dbb1d9c35ca0b4443d71c98a48e6666f7689","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"},{"lessThan":"e6661add2d9c6913e1dad97336595e23a2bed195","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"},{"lessThan":"d1354873cbe3b344899c4311ac05897fd83e3f21","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"},{"lessThan":"31641c682db73353e4647e40735c7f2a75ff58ef","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"},{"lessThan":"c88a9fd26cee365bec932196f76175772a941cca","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"},{"lessThan":"0548a13b5a145b16e4da0628b5936baf35f51b43","status":"affected","version":"563125a73ac30d7036ae69ca35c40500562c1de4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/netfilter/nf_tables.h","net/netfilter/nf_tables_api.c","net/netfilter/nft_dynset.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.11"},{"lessThan":"5.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.136","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.136","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.78","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.20","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.10","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"5.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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"}],"providerMetadata":{"dateUpdated":"2026-06-01T16:11:09.166Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea"},{"url":"https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689"},{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23399","datePublished":"2026-03-28T07:16:09.888Z","dateReserved":"2026-01-13T15:37:46.012Z","dateUpdated":"2026-06-01T16:11:09.166Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-28 08:15:56","lastModifiedDate":"2026-06-01 17:16:45","problem_types":["CWE-401"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11.1","versionEndExcluding":"6.12.78","matchCriteriaId":"0618528B-8039-4E87-8695-397AE7D4B4E5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.20","matchCriteriaId":"E5571059-6552-48E7-9BEF-3E358C387171"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.10","matchCriteriaId":"96D34333-38BE-4414-9E79-6EB764329581"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.11:-:*:*:*:*:*:*","matchCriteriaId":"7AD3510E-E8FA-47F3-9AD5-D8EA4A2719D1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*","matchCriteriaId":"F253B622-8837-4245-BCE5-A7BF8FC76A16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*","matchCriteriaId":"4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*","matchCriteriaId":"F666C8D8-6538-46D4-B318-87610DE64C34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*","matchCriteriaId":"02259FDA-961B-47BC-AE7F-93D7EC6E90C2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*","matchCriteriaId":"58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*","matchCriteriaId":"1D2315C0-D46F-4F85-9754-F9E5E11374A6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*","matchCriteriaId":"512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23399","Ordinal":"1","Title":"nf_tables: nft_dynset: fix possible stateful expression memleak ","CVE":"CVE-2026-23399","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23399","Ordinal":"1","NoteData":"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","Type":"Description","Title":"nf_tables: nft_dynset: fix possible stateful expression memleak "}]}}}