CVE-2026-98052

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-25. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: 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: bcmasp: clear txcb->last before writing each descriptor

bcmasp_xmit() only wrote txcb->last = true for the final fragment of an SKB; non-final fragments left the field untouched. If a descriptor slot was reused while it still held a stale true from a previous SKB (possible when tx_spb_ring_full() underreported fullness), bcmasp_tx_reclaim() would see last == true mid-SKB and call dev_consume_skb_any() prematurely, freeing the sk_buff while its remaining fragments were still in flight.

Unconditionally clear txcb->last before the conditional set so every descriptor slot starts from a known false state regardless of what a prior transmission left behind.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity78% × 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
2nd
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: bcmasp: clear txcb->last before writing each descriptor - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/18e5e0ec0e9282c897e2aa81a3e43ccaee03b003
generic

net: bcmasp: clear txcb->last before writing each descriptor - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/17e6ad484dea5ddf1c4a3d6ec77a5929161234de
generic

net: bcmasp: clear txcb->last before writing each descriptor - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/47a5cecca925ceb175d5adf712e667acf78f475f
generic

net: bcmasp: clear txcb->last before writing each descriptor - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9b26b54861ce05307d39a54ddedddf8747419614

Vendor Advisories for CVE-2026-98052(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
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 46× in last 7d / 64× 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 01:23 UTCEG score recompute
  2. 2026-10-05 01:23 UTCVendor advisory
  3. 2026-10-05 01:23 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 12:45 UTCVendor advisory
  6. 2026-10-04 12:45 UTCGHSA enrichment
  7. 2026-10-04 00:07 UTCEG score recompute
  8. 2026-10-04 00:07 UTCVendor advisory
  9. 2026-10-04 00:07 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 11:12 UTCEG score recompute
  15. 2026-10-03 11:12 UTCVendor advisory
  16. 2026-10-03 11:12 UTCGHSA enrichment
  17. 2026-10-03 05:49 UTCEG score recompute
  18. 2026-10-03 05:49 UTCVendor advisory
  19. 2026-10-03 05:49 UTCGHSA enrichment
  20. 2026-10-02 17:57 UTCEPSS rescore
  21. 2026-10-02 17:08 UTCVendor advisory
  22. 2026-10-02 17:08 UTCGHSA enrichment
  23. 2026-10-02 04:30 UTCEG score recompute
  24. 2026-10-02 04:30 UTCVendor advisory
  25. 2026-10-02 04:30 UTCGHSA enrichment
Show 39 more
  1. 2026-10-01 19:51 UTCEPSS rescore
  2. 2026-10-01 15:50 UTCVendor advisory
  3. 2026-10-01 15:50 UTCGHSA enrichment
  4. 2026-10-01 03:12 UTCEG score recompute
  5. 2026-10-01 03:12 UTCVendor advisory
  6. 2026-10-01 03:12 UTCGHSA enrichment
  7. 2026-09-30 15:04 UTCEPSS rescore
  8. 2026-09-30 14:35 UTCVendor advisory
  9. 2026-09-30 14:35 UTCGHSA enrichment
  10. 2026-09-30 12:29 UTCVendor advisory
  11. 2026-09-30 12:29 UTCGHSA enrichment
  12. 2026-09-29 23:50 UTCVendor advisory
  13. 2026-09-29 23:50 UTCGHSA enrichment
  14. 2026-09-29 07:56 UTCEG score recompute
  15. 2026-09-29 07:56 UTCVendor advisory
  16. 2026-09-29 07:56 UTCGHSA enrichment
  17. 2026-09-28 19:18 UTCEG score recompute
  18. 2026-09-28 19:18 UTCVendor advisory
  19. 2026-09-28 19:17 UTCGHSA enrichment
  20. 2026-09-28 13:52 UTCEPSS rescore
  21. 2026-09-28 13:52 UTCEPSS rescore
  22. 2026-09-28 06:37 UTCGHSA enrichment
  23. 2026-09-27 18:00 UTCEG score recompute
  24. 2026-09-27 18:00 UTCGHSA enrichment
  25. 2026-09-27 13:49 UTCEPSS rescore
  26. 2026-09-27 05:21 UTCGHSA enrichment
  27. 2026-09-26 16:43 UTCEG score recompute
  28. 2026-09-26 16:43 UTCGHSA enrichment
  29. 2026-09-26 15:59 UTCEPSS rescore
  30. 2026-09-26 04:02 UTCEG score recompute
  31. 2026-09-26 04:02 UTCGHSA enrichment
  32. 2026-09-25 15:23 UTCEG score recompute
  33. 2026-09-25 15:23 UTCGHSA enrichment
  34. 2026-09-25 14:52 UTCEG score recompute▲ 7.80
  35. 2026-09-25 14:52 UTCGHSA enrichment
  36. 2026-09-25 14:49 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  37. 2026-09-25 11:30 UTCNVD update
  38. 2026-09-25 10:28 UTCEG score recompute
  39. 2026-09-25 10:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-98052?
CVE-2026-98052 is a high vulnerability published on September 25, 2026. In the Linux kernel, the following vulnerability has been resolved: net: bcmasp: clear txcb->last before writing each descriptor bcmasp_xmit() only wrote txcb->last = true for the final fragment of an SKB; non-final fragments left the field untouched. If a descriptor slot was reused while it still…
When was CVE-2026-98052 disclosed?
CVE-2026-98052 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-2026-98052 actively exploited?
CVE-2026-98052 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-98052?
CVE-2026-98052 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-98052?
No fix for CVE-2026-98052 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-2026-98052 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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