FKIE_CVE-2026-23204

Vulnerability from fkie_nvd - Published: 2026-02-14 17:15 - Updated: 2026-02-18 17:52
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_u32: use skb_header_pointer_careful() skb_header_pointer() does not fully validate negative @offset values. Use skb_header_pointer_careful() instead. GangMin Kim provided a report and a repro fooling u32_classify(): BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0 net/sched/cls_u32.c:221
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cls_u32: use skb_header_pointer_careful()\n\nskb_header_pointer() does not fully validate negative @offset values.\n\nUse skb_header_pointer_careful() instead.\n\nGangMin Kim provided a report and a repro fooling u32_classify():\n\nBUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0\nnet/sched/cls_u32.c:221"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/sched: cls_u32: usar skb_header_pointer_careful()\n\nskb_header_pointer() no valida completamente los valores negativos de @offset.\n\nUsar skb_header_pointer_careful() en su lugar.\n\nGangMin Kim proporcion\u00f3 un informe y una reproducci\u00f3n enga\u00f1ando a u32_classify():\n\nBUG: KASAN: slab-out-of-bounds en u32_classify+0x1180/0x11b0\nnet/sched/cls_u32.c:221"
    }
  ],
  "id": "CVE-2026-23204",
  "lastModified": "2026-02-18T17:52:22.253",
  "metrics": {},
  "published": "2026-02-14T17:15:58.297",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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