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(). 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 versions
Linux kernel versions
5.15.13,
5.16
and later are affected. Fixed in
5.15.197,
6.1.159,
6.6.117,
6.12.59,
6.17.9,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-68200 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/4ef92743625818932b9c320152b58274c05e5053
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PatchKernel patch commithttps://git.kernel.org/stable/c/5e149d8a8e732126fb6014efd60075cf63a73f91
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PatchKernel patch commithttps://git.kernel.org/stable/c/6392e5f4b1a3cce10e828309baf35d22abd3457d
Frequently asked questions
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What is CVE-2025-68200?
CVE-2025-68200 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.15.13 onward and has been patched in 5.15.197, 6.1.159, 6.6.117 and others. CVE-2025-68200 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68200?
Yes — CVE-2025-68200 has been patched. Fixed versions include 5.15.197, 6.1.159, 6.6.117 and others. If you are running Linux kernel 5.15.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68200 actively exploited?
No — CVE-2025-68200 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.