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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-23204

net/sched: cls_u32: use skb_header_pointer_careful()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < 66e4b63d61c15de6ca5332d9ca6db59a404d7136affected
  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < 29681ed51e737be14d18ecd1c304c57002e4b72caffected
  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < cfa745830e45ecb75c061aa34330ee0cac941cc7affected
  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < 13336a6239b9d7c6e61483017bb8bdfe3ceb10a5affected
  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < e41a23e61259f5526af875c3b86b3d42a9bae0e5affected
  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < 8a672f177ebe19c93d795fbe967846084fbc7943affected
  • fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d to < cabd1a976375780dabab888784e356f574bbaed8affected

Linux Linux

Default version status: affected

  • 2.6.35affected
  • 0 to < 2.6.35unaffected
  • 5.10.260 to ≤ 5.10.*unaffected
  • 5.15.209 to ≤ 5.15.*unaffected
  • 6.1.167 to ≤ 6.1.*unaffected
  • 6.6.124 to ≤ 6.6.*unaffected
  • 6.12.70 to ≤ 6.12.*unaffected
  • 6.18.10 to ≤ 6.18.*unaffected
  • 6.19 to ≤ *unaffected

References