FKIE_CVE-2026-23399

Vulnerability from fkie_nvd - Published: 2026-03-28 08:15 - Updated: 2026-04-24 15:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58efPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941ccaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.11
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
To clipboard 

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  "configurations": [
    {
      "nodes": [
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  "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"
    }
  ],
  "id": "CVE-2026-23399",
  "lastModified": "2026-04-24T15:17:43.237",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-03-28T08:15:56.720",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • 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.
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