FKIE_CVE-2026-23098

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-04-03 14:16
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: netrom: fix double-free in nr_route_frame() In nr_route_frame(), old_skb is immediately freed without checking if nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL, the caller function will free old_skb again, causing a double-free bug. Therefore, to prevent this, we need to modify it to check whether nr_neigh->ax25 is NULL before freeing old_skb.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetrom: fix double-free in nr_route_frame()\n\nIn nr_route_frame(), old_skb is immediately freed without checking if\nnr_neigh-\u003eax25 pointer is NULL. Therefore, if nr_neigh-\u003eax25 is NULL,\nthe caller function will free old_skb again, causing a double-free bug.\n\nTherefore, to prevent this, we need to modify it to check whether\nnr_neigh-\u003eax25 is NULL before freeing old_skb."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnetrom: soluciona doble liberaci\u00f3n en nr_route_frame()\n\nEn nr_route_frame(), old_skb es liberado inmediatamente sin comprobar si el puntero nr_neigh-\u0026gt;ax25 es NULL. Por lo tanto, si nr_neigh-\u0026gt;ax25 es NULL, la funci\u00f3n llamadora liberar\u00e1 old_skb de nuevo, causando un error de doble liberaci\u00f3n.\n\nPor lo tanto, para evitar esto, necesitamos modificarlo para comprobar si nr_neigh-\u0026gt;ax25 es NULL antes de liberar old_skb."
    }
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  "id": "CVE-2026-23098",
  "lastModified": "2026-04-03T14:16:23.193",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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  "published": "2026-02-04T17:16:20.680",
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  "vulnStatus": "Modified",
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          "value": "CWE-415"
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      "source": "nvd@nist.gov",
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}


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