CVE-2026-98030

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-25. A secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.0Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

In the Linux kernel, the following vulnerability has been resolved:

net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size

bcm_sf2_cfp_rule_get_all() walks the whole cfp.unique bitmap into rule_locs[] without consulting nfc->rule_cnt, which is how many entries the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN and the ioctl sizes the buffer from the rule_cnt userspace passes in, so once an admin has installed CFP rules any user can ask for fewer slots than there are rules and run off the end of the allocation. A rule_cnt of 0 leaves the buffer pointer NULL and the walk dereferences it.

CVSS v3
7.0
EG Score
7.0HIGHhigh confidence
EG Risk
36
EG Risk 36/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 25, 2026

Last Modified

October 3, 2026

Advisory Details (4)

Auto-updated Sep 25, 2026
No patch confirmed yet.
generic

net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cdb719f4b8596d9ccee2d56d204c2c4dce982f46
generic

net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b231b6d8516d3fe0d4bba549908e08d26a4531a5
generic

net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd1a78c16b1f6978c09cf048e15f349732e4c707
generic

net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f1a2869b3629c0e8394b77b38cb9f19a018c653c

Vendor Advisories for CVE-2026-98030(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (180 versions)
  • every version up to 7.2.7-1: fixed in 7.2.7-1
—

Data Freshness Timeline

(refreshed 47× in last 7d / 65× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 00:01 UTCEG score recompute
  2. 2026-10-05 00:01 UTCVendor advisory
  3. 2026-10-05 00:01 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 11:49 UTCVendor advisory
  6. 2026-10-04 11:49 UTCGHSA enrichment
  7. 2026-10-03 23:39 UTCEG score recompute
  8. 2026-10-03 23:39 UTCVendor advisory
  9. 2026-10-03 23:39 UTCGHSA enrichment
  10. 2026-10-03 14:26 UTCEPSS rescore
  11. 2026-10-03 11:27 UTCEG score recompute
  12. 2026-10-03 11:27 UTCVendor advisory
  13. 2026-10-03 11:27 UTCGHSA enrichment
  14. 2026-10-03 11:13 UTCEG score recompute
  15. 2026-10-03 11:13 UTCVendor advisory
  16. 2026-10-03 11:13 UTCGHSA enrichment
  17. 2026-10-03 06:18 UTCVendor advisory
  18. 2026-10-03 06:18 UTCGHSA enrichment
  19. 2026-10-02 18:07 UTCEG score recompute
  20. 2026-10-02 18:07 UTCVendor advisory
  21. 2026-10-02 18:06 UTCGHSA enrichment
  22. 2026-10-02 17:57 UTCEPSS rescore
  23. 2026-10-02 05:53 UTCEG score recompute
  24. 2026-10-02 05:53 UTCVendor advisory
  25. 2026-10-02 05:53 UTCGHSA enrichment
Show 40 more
  1. 2026-10-01 19:51 UTCEPSS rescore
  2. 2026-10-01 17:43 UTCVendor advisory
  3. 2026-10-01 17:42 UTCGHSA enrichment
  4. 2026-10-01 05:27 UTCVendor advisory
  5. 2026-10-01 05:27 UTCGHSA enrichment
  6. 2026-09-30 17:15 UTCEG score recompute
  7. 2026-09-30 17:15 UTCVendor advisory
  8. 2026-09-30 17:15 UTCGHSA enrichment
  9. 2026-09-30 15:04 UTCEPSS rescore
  10. 2026-09-30 05:04 UTCVendor advisory
  11. 2026-09-30 05:04 UTCGHSA enrichment
  12. 2026-09-29 16:52 UTCEG score recompute
  13. 2026-09-29 16:52 UTCVendor advisory
  14. 2026-09-29 16:52 UTCGHSA enrichment
  15. 2026-09-29 04:41 UTCEG score recompute
  16. 2026-09-29 04:41 UTCVendor advisory
  17. 2026-09-29 04:41 UTCGHSA enrichment
  18. 2026-09-28 16:30 UTCEG score recompute
  19. 2026-09-28 16:30 UTCVendor advisory
  20. 2026-09-28 16:30 UTCGHSA enrichment
  21. 2026-09-28 13:52 UTCEPSS rescore
  22. 2026-09-28 13:52 UTCEPSS rescore
  23. 2026-09-28 04:18 UTCGHSA enrichment
  24. 2026-09-27 16:07 UTCEG score recompute
  25. 2026-09-27 16:07 UTCGHSA enrichment
  26. 2026-09-27 13:49 UTCEPSS rescore
  27. 2026-09-27 03:57 UTCEG score recompute
  28. 2026-09-27 03:57 UTCGHSA enrichment
  29. 2026-09-26 15:59 UTCEPSS rescore
  30. 2026-09-26 15:45 UTCGHSA enrichment
  31. 2026-09-26 03:34 UTCEG score recompute
  32. 2026-09-26 03:34 UTCGHSA enrichment
  33. 2026-09-25 15:23 UTCEG score recompute
  34. 2026-09-25 15:23 UTCGHSA enrichment
  35. 2026-09-25 14:52 UTCEG score recompute▲ 7.00
  36. 2026-09-25 14:52 UTCGHSA enrichment
  37. 2026-09-25 14:49 UTCMITRE cvelistV5CVSS v3 → 7 · severity → HIGH
  38. 2026-09-25 11:30 UTCNVD update
  39. 2026-09-25 10:29 UTCEG score recompute
  40. 2026-09-25 10:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-98030?
CVE-2026-98030 is a high vulnerability published on September 25, 2026. In the Linux kernel, the following vulnerability has been resolved: net: dsa: bcm_sf2: bound the CFP rule dump by the caller's buffer size bcmsf2cfpruleget_all() walks the whole cfp.unique bitmap into rulelocs[] without consulting nfc->rulecnt, which is how many entries the caller had room for.…
When was CVE-2026-98030 disclosed?
CVE-2026-98030 was first published on September 25, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-98030 actively exploited?
CVE-2026-98030 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-98030?
CVE-2026-98030 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-98030?
No fix for CVE-2026-98030 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-98030 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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