CVE-2025-68200
In the Linux kernel, the following vulnerability has been resolved: bpf: Add bpf_prog_run_data_pointers() syzbot found that cls_bpf_classify() is able to change tc_skb_cb(skb)->drop_reason triggering a warning in sk_skb_reason_drop().
Does this matter?
Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Add bpf_prog_run_data_pointers() syzbot found that cls_bpf_classify() is able to change tc_skb_cb(skb)->drop_reason triggering a warning in sk_skb_reason_drop(). WARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 __sk_skb_reason_drop net/core/skbuff.c:1189 [inline] WARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214 struct tc_skb_cb has been added in commit ec624fe740b4 ("net/sched: Extend qdisc control block with tc control block"), which added a wrong interaction with db58ba459202 ("bpf: wire in data and data_end for cls_act_bpf"). drop_reason was added later. Add bpf_prog_run_data_pointers() helper to save/restore the net_sched storage colliding with BPF data_meta/data_end.
- CVSS
- Not yet scored
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4ef92743625818932b9c320152b58274c05e5053
- https://git.kernel.org/stable/c/5e149d8a8e732126fb6014efd60075cf63a73f91
- https://git.kernel.org/stable/c/6392e5f4b1a3cce10e828309baf35d22abd3457d
- https://git.kernel.org/stable/c/8dd2fe5f5d586c8e87307b7a271f6b994afcc006
- https://git.kernel.org/stable/c/baa61dcaa50b7141048c8d2aede7fe9ed8f21d11
- https://git.kernel.org/stable/c/c4cdd143c35974a2cedd000fa9eb3accc3023b20
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.