Vulnerability-Lookup

CVE-2026-23399 (GCVE-0-2026-23399)

Vulnerability from cvelistv5 – Published: 2026-03-28 07:16 – Updated: 2026-06-01 16:11

Title

nf_tables: nft_dynset: fix possible stateful expression memleak in error path

Summary

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

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/eb7bf413e59945df0…
https://git.kernel.org/stable/c/4357dbb1d9c35ca0b…
https://git.kernel.org/stable/c/e6661add2d9c6913e…
https://git.kernel.org/stable/c/d1354873cbe3b3448…
https://git.kernel.org/stable/c/31641c682db73353e…
https://git.kernel.org/stable/c/c88a9fd26cee365be…
https://git.kernel.org/stable/c/0548a13b5a145b16e…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < eb7bf413e59945df03d4567b73ce464eebe2f4ea (git) Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < 4357dbb1d9c35ca0b4443d71c98a48e6666f7689 (git) Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < e6661add2d9c6913e1dad97336595e23a2bed195 (git) Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < d1354873cbe3b344899c4311ac05897fd83e3f21 (git) Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < 31641c682db73353e4647e40735c7f2a75ff58ef (git) Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < c88a9fd26cee365bec932196f76175772a941cca (git) Affected: 563125a73ac30d7036ae69ca35c40500562c1de4 , < 0548a13b5a145b16e4da0628b5936baf35f51b43 (git)	guessed
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.20 , ≤ 6.18.* (semver) Unaffected: 6.19.10 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)	guessed

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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_tables.h",
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.136",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.78",
              "versionType": "semver"
            },
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              "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"
            }
          ]
        }
      ],
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      "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 \u00a0 unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n \u00a0 \u00a0 comm \"softirq\", pid 0, jiffies 4294931867\n \u00a0 \u00a0 hex dump (first 16 bytes on cpu 3):\n \u00a0 \u00a0 \u00a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n \u00a0 \u00a0 backtrace (crc 0):\n \u00a0 \u00a0 \u00a0 pcpu_alloc_noprof+0x453/0xd80\n \u00a0 \u00a0 \u00a0 nft_counter_clone+0x9c/0x190 [nf_tables]\n \u00a0 \u00a0 \u00a0 nft_expr_clone+0x8f/0x1b0 [nf_tables]\n \u00a0 \u00a0 \u00a0 nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n \u00a0 \u00a0 \u00a0 nft_rhash_update+0x236/0x11c0 [nf_tables]\n \u00a0 \u00a0 \u00a0 nft_dynset_eval+0x11f/0x670 [nf_tables]\n \u00a0 \u00a0 \u00a0 nft_do_chain+0x253/0x1700 [nf_tables]\n \u00a0 \u00a0 \u00a0 nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n \u00a0 \u00a0 \u00a0 nf_hook_slow+0xaa/0x1e0\n \u00a0 \u00a0 \u00a0 ip_local_deliver+0x209/0x330"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T16:11:09.166Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689"
        },
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        },
        {
          "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",
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  },
  "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"
  },
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-23399",
      "date": "2026-08-19",
      "epss": "0.00121",
      "percentile": "0.02277"
    },
    "microsoft_vex": {
      "current_release_date": "2026-05-02T14:38:16.000Z",
      "cve": "CVE-2026-23399",
      "id": "msrc_CVE-2026-23399",
      "initial_release_date": "2026-03-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "nf_tables: nft_dynset: fix possible stateful expression memleak in error path",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-23399.json",
      "version": "7"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23399\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-28T08:15:56.720\",\"lastModified\":\"2026-06-17T10:21:30.377\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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 \u00a0 unreferenced object (percpu) 0x607b97e9cab8 (size 16):\\n \u00a0 \u00a0 comm \\\"softirq\\\", pid 0, jiffies 4294931867\\n \u00a0 \u00a0 hex dump (first 16 bytes on cpu 3):\\n \u00a0 \u00a0 \u00a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n \u00a0 \u00a0 backtrace (crc 0):\\n \u00a0 \u00a0 \u00a0 pcpu_alloc_noprof+0x453/0xd80\\n \u00a0 \u00a0 \u00a0 nft_counter_clone+0x9c/0x190 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nft_expr_clone+0x8f/0x1b0 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nft_dynset_new+0x2cb/0x5f0 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nft_rhash_update+0x236/0x11c0 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nft_dynset_eval+0x11f/0x670 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nft_do_chain+0x253/0x1700 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\\n \u00a0 \u00a0 \u00a0 nf_hook_slow+0xaa/0x1e0\\n \u00a0 \u00a0 \u00a0 ip_local_deliver+0x209/0x330\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nnf_tables: nft_dynset: corregir posible fuga de memoria de expresi\u00f3n con estado en la ruta de error\\n\\nSi la clonaci\u00f3n de la segunda expresi\u00f3n con estado en el elemento a trav\u00e9s de GFP_ATOMIC falla, entonces la primera expresi\u00f3n con estado permanece en su lugar sin ser liberada.\\n\\n \u0026#xa0; objeto sin referencia (por CPU) 0x607b97e9cab8 (tama\u00f1o 16):\\n \u0026#xa0; \u0026#xa0; comm \u0027softirq\u0027, pid 0, jiffies 4294931867\\n \u0026#xa0; \u0026#xa0; volcado hexadecimal (primeros 16 bytes en la CPU 3):\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n \u0026#xa0; \u0026#xa0; rastreo de pila (crc 0):\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; pcpu_alloc_noprof+0x453/0xd80\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_counter_clone+0x9c/0x190 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_expr_clone+0x8f/0x1b0 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_dynset_new+0x2cb/0x5f0 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_rhash_update+0x236/0x11c0 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_dynset_eval+0x11f/0x670 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_do_chain+0x253/0x1700 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; nf_hook_slow+0xaa/0x1e0\\n \u0026#xa0; \u0026#xa0; \u0026#xa0; ip_local_deliver+0x209/0x330\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"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\",\"versions\":[{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"eb7bf413e59945df03d4567b73ce464eebe2f4ea\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"4357dbb1d9c35ca0b4443d71c98a48e6666f7689\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"e6661add2d9c6913e1dad97336595e23a2bed195\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"d1354873cbe3b344899c4311ac05897fd83e3f21\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"31641c682db73353e4647e40735c7f2a75ff58ef\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"c88a9fd26cee365bec932196f76175772a941cca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"563125a73ac30d7036ae69ca35c40500562c1de4\",\"lessThan\":\"0548a13b5a145b16e4da0628b5936baf35f51b43\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"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\",\"versions\":[{\"version\":\"5.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.136\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.78\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.20\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.10\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"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\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:20:44+00:00",
      "cve": "CVE-2026-23399",
      "id": "CVE-2026-23399",
      "initial_release_date": "2026-03-28T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nf_tables: nft_dynset: fix possible stateful expression memleak in error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23399.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-19T17:42:28Z",
      "cve": "CVE-2026-23399",
      "id": "CVE-2026-23399",
      "initial_release_date": "2026-03-28T18:19:40Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "161",
      "product_status:known_not_affected": "110",
      "product_status:recommended": "295",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23399",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23399.json",
      "version": "17"
    }
  }
}

WID-SEC-W-2026-0910

Vulnerability from csaf_certbund - Published: 2026-03-29 22:00 - Updated: 2026-06-04 22:00

Summary

Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Severity

Mittel

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Der Kernel stellt den Kern des Linux Betriebssystems dar.

Angriff: Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder andere, nicht näher spezifizierte Angriffe durchzuführen.

Betroffene Betriebssysteme: - Linux

CVE-2026-23399

Affected products

Known affected 5 products

Product	Identifier	Version
Open Source Linux Kernel Open Source	`cpe:/o:linux:linux_kernel:-`	—
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Google Container-Optimized OS Google	`cpe:/o:google:container-optimized_os:-`	—

CVE-2026-23400

Affected products

Known affected 5 products

Product	Identifier	Version
Open Source Linux Kernel Open Source	`cpe:/o:linux:linux_kernel:-`	—
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Google Container-Optimized OS Google	`cpe:/o:google:container-optimized_os:-`	—

References

22 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://lore.kernel.org/linux-cve-announce/	external
https://lore.kernel.org/linux-cve-announce/202603…	external
https://lore.kernel.org/linux-cve-announce/202603…	external
https://docs.cloud.google.com/container-optimized…	external
https://lists.debian.org/debian-security-announce…	external
https://docs.cloud.google.com/container-optimized…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.opensuse.org/archives/list/security…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren oder andere, nicht n\u00e4her spezifizierte Angriffe durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-0910 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0910.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-0910 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0910"
      },
      {
        "category": "external",
        "summary": "Kernel CVE Announce Mailingliste",
        "url": "https://lore.kernel.org/linux-cve-announce/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-23399",
        "url": "https://lore.kernel.org/linux-cve-announce/2026032820-CVE-2026-23399-60d0@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-23400",
        "url": "https://lore.kernel.org/linux-cve-announce/2026032953-CVE-2026-23400-b75a@gregkh/"
      },
      {
        "category": "external",
        "summary": "Container-Optimized OS release notes vom 2026-05-02",
        "url": "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#May_01_2026"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-6238 vom 2026-05-04",
        "url": "https://lists.debian.org/debian-security-announce/2026/msg00148.html"
      },
      {
        "category": "external",
        "summary": "Container-Optimized OS release notes vom 2026-05-26",
        "url": "https://docs.cloud.google.com/container-optimized-os/docs/release-notes#May_01_2026"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21841-1 vom 2026-05-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026384.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21834-1 vom 2026-05-29",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026381.html"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:20826-1 vom 2026-05-29",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/7D6UU5UPSRF74AUKK2CVVWC3NKU2VIUP/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21860-1 vom 2026-06-01",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026426.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21845-1 vom 2026-06-01",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026437.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21947-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026447.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21916-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026478.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21866-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026524.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21876-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026515.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:2217-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026441.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21868-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026522.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21877-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026514.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21919-1 vom 2026-06-02",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026475.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:2238-1 vom 2026-06-03",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026559.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Mehrere Schwachstellen erm\u00f6glichen Denial of Service",
    "tracking": {
      "current_release_date": "2026-06-04T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-05T08:34:13.424+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-0910",
      "initial_release_date": "2026-03-29T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-03-29T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-05-03T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2026-05-26T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates aufgenommen"
        },
        {
          "date": "2026-05-31T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von SUSE und openSUSE aufgenommen"
        },
        {
          "date": "2026-06-01T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-06-02T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-06-04T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von SUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "7"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Google Container-Optimized OS",
            "product": {
              "name": "Google Container-Optimized OS",
              "product_id": "1607324",
              "product_identification_helper": {
                "cpe": "cpe:/o:google:container-optimized_os:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Google"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel",
            "product": {
              "name": "Open Source Linux Kernel",
              "product_id": "T052262",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T027843",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-23399",
      "product_status": {
        "known_affected": [
          "T052262",
          "2951",
          "T002207",
          "T027843",
          "1607324"
        ]
      },
      "release_date": "2026-03-29T22:00:00.000+00:00",
      "title": "CVE-2026-23399"
    },
    {
      "cve": "CVE-2026-23400",
      "product_status": {
        "known_affected": [
          "T052262",
          "2951",
          "T002207",
          "T027843",
          "1607324"
        ]
      },
      "release_date": "2026-03-29T22:00:00.000+00:00",
      "title": "CVE-2026-23400"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-23399 (GCVE-0-2026-23399)

WID-SEC-W-2026-0910

Tags

Sightings

Nomenclature