GHSA-JXW4-CRCG-X436
Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 2025-12-16 15:30In 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": [],
"aliases": [
"CVE-2025-68200"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-16T14:15:52Z",
"severity": null
},
"details": "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.",
"id": "GHSA-jxw4-crcg-x436",
"modified": "2025-12-16T15:30:45Z",
"published": "2025-12-16T15:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68200"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4ef92743625818932b9c320152b58274c05e5053"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5e149d8a8e732126fb6014efd60075cf63a73f91"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6392e5f4b1a3cce10e828309baf35d22abd3457d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8dd2fe5f5d586c8e87307b7a271f6b994afcc006"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/baa61dcaa50b7141048c8d2aede7fe9ed8f21d11"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c4cdd143c35974a2cedd000fa9eb3accc3023b20"
}
],
"schema_version": "1.4.0",
"severity": []
}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.