FKIE_CVE-2026-23204

Vulnerability from fkie_nvd - Published: 2026-02-14 17:15 - Updated: 2026-04-03 14:16
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 2.6.35
linux linux_kernel 2.6.35
linux linux_kernel 2.6.35
linux linux_kernel 2.6.35
linux linux_kernel 2.6.35
linux linux_kernel 2.6.35
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
linux linux_kernel 6.19
linux linux_kernel 6.19
To clipboard 

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      "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"
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  "id": "CVE-2026-23204",
  "lastModified": "2026-04-03T14:16:27.310",
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          "confidentialityImpact": "HIGH",
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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.