cbcvebase.
CVE-2025-68200
published 2025-12-16

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…

PriorityP420high7.8
EPSS
0.18%
8.1th percentile
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.

Affected

25 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.159-1 (bookworm)linux 6.1.159-1 (bookworm)
debianlinux-6.1< linux 6.1.159-1 (bookworm)linux 6.1.159-1 (bookworm)
linuxlinux
linuxlinux>= 0d76daf2013ce1da20eab5e26bd81d983e1c18fb < c4cdd143c35974a2cedd000fa9eb3accc3023b20c4cdd143c35974a2cedd000fa9eb3accc3023b20
linuxlinux>= 5.15.13 < 5.15.1975.15.197
linuxlinux>= ec624fe740b416fb68d536b37fb8eef46f90b5c2 < 5e149d8a8e732126fb6014efd60075cf63a73f915e149d8a8e732126fb6014efd60075cf63a73f91
linuxlinux>= ec624fe740b416fb68d536b37fb8eef46f90b5c2 < baa61dcaa50b7141048c8d2aede7fe9ed8f21d11baa61dcaa50b7141048c8d2aede7fe9ed8f21d11
linuxlinux>= ec624fe740b416fb68d536b37fb8eef46f90b5c2 < 6392e5f4b1a3cce10e828309baf35d22abd3457d6392e5f4b1a3cce10e828309baf35d22abd3457d
linuxlinux>= ec624fe740b416fb68d536b37fb8eef46f90b5c2 < 8dd2fe5f5d586c8e87307b7a271f6b994afcc0068dd2fe5f5d586c8e87307b7a271f6b994afcc006
linuxlinux>= ec624fe740b416fb68d536b37fb8eef46f90b5c2 < 4ef92743625818932b9c320152b58274c05e50534ef92743625818932b9c320152b58274c05e5053
linuxlinux_kernel< 6.6.1176.6.117
linuxlinux_kernel>= 0 < 6.1.159-16.1.159-1
linuxlinux_kernel>= 0 < 6.12.63-16.12.63-1
linuxlinux_kernel>= 0 < 6.17.9-16.17.9-1
linuxlinux_kernel>= 0 < 5.15.1975.15.197
linuxlinux_kernel>= 0 < 5.15.0-173.1835.15.0-173.183
linuxlinux_kernel>= 0 < 6.8.0-106.1066.8.0-106.106
linuxlinux_kernel>= 0 < 6.17.0-14.146.17.0-14.14
linuxlinux_kernel>= 5.16.0 < 6.1.1596.1.159
linuxlinux_kernel>= 6.2.0 < 6.12.596.12.59
linuxlinux_kernel>= 6.7.0 < 6.17.96.17.9
ubuntulinux-aws
ubuntulinux-azure-5.15
ubuntulinux-oracle
ubuntulinux-xilinx

CVSS provenance

osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_redhat5.5LOW
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.