CVE-2025-68200 (GCVE-0-2025-68200)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:48 – Updated: 2026-05-23 16:02
VLAI
Title
bpf: Add bpf_prog_run_data_pointers()
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0d76daf2013ce1da20eab5e26bd81d983e1c18fb , < c4cdd143c35974a2cedd000fa9eb3accc3023b20 (git)
Affected: ec624fe740b416fb68d536b37fb8eef46f90b5c2 , < 5e149d8a8e732126fb6014efd60075cf63a73f91 (git)
Affected: ec624fe740b416fb68d536b37fb8eef46f90b5c2 , < baa61dcaa50b7141048c8d2aede7fe9ed8f21d11 (git)
Affected: ec624fe740b416fb68d536b37fb8eef46f90b5c2 , < 6392e5f4b1a3cce10e828309baf35d22abd3457d (git)
Affected: ec624fe740b416fb68d536b37fb8eef46f90b5c2 , < 8dd2fe5f5d586c8e87307b7a271f6b994afcc006 (git)
Affected: ec624fe740b416fb68d536b37fb8eef46f90b5c2 , < 4ef92743625818932b9c320152b58274c05e5053 (git)
Affected: 5.15.13 , < 5.15.197 (semver)
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Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.59 , ≤ 6.12.* (semver)
Unaffected: 6.17.9 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add bpf_prog_run_data_pointers()\n\nsyzbot found that cls_bpf_classify() is able to change\ntc_skb_cb(skb)-\u003edrop_reason triggering a warning in sk_skb_reason_drop().\n\nWARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 __sk_skb_reason_drop net/core/skbuff.c:1189 [inline]\nWARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214\n\nstruct tc_skb_cb has been added in commit ec624fe740b4 (\"net/sched:\nExtend qdisc control block with tc control block\"), which added a wrong\ninteraction with db58ba459202 (\"bpf: wire in data and data_end for\ncls_act_bpf\").\n\ndrop_reason was added later.\n\nAdd bpf_prog_run_data_pointers() helper to save/restore the net_sched\nstorage colliding with BPF data_meta/data_end."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add bpf_prog_run_data_pointers()\n\nsyzbot found that cls_bpf_classify() is able to change\ntc_skb_cb(skb)-\u003edrop_reason triggering a warning in sk_skb_reason_drop().\n\nWARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 __sk_skb_reason_drop net/core/skbuff.c:1189 [inline]\nWARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214\n\nstruct tc_skb_cb has been added in commit ec624fe740b4 (\"net/sched:\nExtend qdisc control block with tc control block\"), which added a wrong\ninteraction with db58ba459202 (\"bpf: wire in data and data_end for\ncls_act_bpf\").\n\ndrop_reason was added later.\n\nAdd bpf_prog_run_data_pointers() helper to save/restore the net_sched\nstorage colliding with BPF data_meta/data_end."
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbpf: A\u00f1adir bpf_prog_run_data_pointers()\n\nsyzbot encontr\u00f3 que cls_bpf_classify() es capaz de cambiar tc_skb_cb(skb) -\u003e drop_reason, lo que activa una advertencia en sk_skb_reason_drop().\n\nADVERTENCIA: CPU: 0 PID: 5965 en net/core/skbuff.c:1192 __sk_skb_reason_drop net/core/skbuff.c:1189 [en l\u00ednea]\nADVERTENCIA: CPU: 0 PID: 5965 en net/core/skbuff.c:1192 sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214\n\nLa estructura tc_skb_cb ha sido a\u00f1adida en el commit ec624fe740b4 (\u0027net/sched: Extender el bloque de control qdisc con el bloque de control tc\u0027), lo que a\u00f1adi\u00f3 una interacci\u00f3n incorrecta con db58ba459202 (\u0027bpf: conectar data y data_end para cls_act_bpf\u0027).\n\ndrop_reason fue a\u00f1adido posteriormente.\n\nA\u00f1adir el ayudante bpf_prog_run_data_pointers() para guardar/restaurar el almacenamiento de net_sched que colisiona con BPF data_meta/data_end."
          }
        ],
        "id": "CVE-2025-68200",
        "lastModified": "2026-10-14T13:10:00.187",
        "metrics": {},
        "published": "2025-12-16T14:15:52.820",
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        "vulnStatus": "Deferred"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:37:09+00:00",
      "cve": "CVE-2025-68200",
      "id": "CVE-2025-68200",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf: Add bpf_prog_run_data_pointers()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68200.json",
      "version": "3"
    }
  }
}



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