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Test your applicationsUpgrade Rocky-Linux:10 kernel-64k-core to version 0:6.12.0-124.49.1.el10_1 or higher.
This issue was patched in RLSA-2026:6632.
Note: Versions mentioned in the description apply only to the upstream kernel-64k-core package and not the kernel-64k-core package as distributed by Rocky-Linux.
See How to fix? for Rocky-Linux:10 relevant fixed versions and status.
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