CVE-2026-23204EPSS p2.0%
CVE-2026-23204CVE-2026-23204
linux / linux_kernel
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
Scoring
| CVSS | 7.1 () |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| EPSS | 0.12% probability of exploitation · percentile 2.0% · 2026-06-18T12:00:27Z |
| Last modified | 2026-06-01 |
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