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 sk

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

References

• https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5(Patch)
• https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943(Patch)
• https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8(Patch)
• https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5(Patch)

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