CVE-2026-97990

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-25. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.5Exploit: 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:

vdpa_sim_net: check TX pull result before RX copy

vringh_iov_pull_iotlb() returns a signed byte count. A failed TX pull is currently added to the unsigned byte counter and then passed as a size_t length to receive_filter() and vringh_iov_push_iotlb(). A negative error can therefore become a large length in the RX path.

Handle non-positive pull results before every length use. Count the TX error and complete the consumed TX descriptor with zero bytes.

I found this bug myself, though the patch was written with AI assistance.

CVSS v3
7.5
EG Score
7.5HIGHhigh confidence
EG Risk
38
EG Risk 38/100CISA 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
Severity75% × 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

vdpa_sim_net: check TX pull result before RX copy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0d195797a80b77f2ec56718cd26d3ee65d0093e8
generic

vdpa_sim_net: check TX pull result before RX copy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2bbf1c1f69991e28787e02b0a2f826289d5fc730
generic

vdpa_sim_net: check TX pull result before RX copy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3af20238a09ca180d66623e3bed16b64e9975f39
generic

vdpa_sim_net: check TX pull result before RX copy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c001abcde865b74231da8f1412c3217dbf66781e

Vendor Advisories for CVE-2026-97990(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 42× in last 7d / 61× 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 03:01 UTCEG score recompute
  2. 2026-10-05 03:01 UTCVendor advisory
  3. 2026-10-05 03:01 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 13:49 UTCVendor advisory
  6. 2026-10-04 13:49 UTCGHSA enrichment
  7. 2026-10-04 00:38 UTCEG score recompute
  8. 2026-10-04 00:38 UTCVendor advisory
  9. 2026-10-04 00:38 UTCGHSA enrichment
  10. 2026-10-03 14:26 UTCEPSS rescore
  11. 2026-10-03 11:28 UTCEG score recompute
  12. 2026-10-03 11:28 UTCVendor advisory
  13. 2026-10-03 11:28 UTCGHSA enrichment
  14. 2026-10-03 11:15 UTCEG score recompute
  15. 2026-10-03 11:15 UTCVendor advisory
  16. 2026-10-03 11:15 UTCGHSA enrichment
  17. 2026-10-03 08:33 UTCVendor advisory
  18. 2026-10-03 08:33 UTCGHSA enrichment
  19. 2026-10-02 19:21 UTCEG score recompute
  20. 2026-10-02 19:21 UTCVendor advisory
  21. 2026-10-02 19:21 UTCGHSA enrichment
  22. 2026-10-02 17:57 UTCEPSS rescore
  23. 2026-10-02 06:11 UTCEG score recompute
  24. 2026-10-02 06:11 UTCVendor advisory
  25. 2026-10-02 06:11 UTCGHSA enrichment
Show 36 more
  1. 2026-10-01 19:51 UTCEPSS rescore
  2. 2026-10-01 17:01 UTCVendor advisory
  3. 2026-10-01 17:01 UTCGHSA enrichment
  4. 2026-10-01 03:16 UTCEG score recompute
  5. 2026-10-01 03:16 UTCVendor advisory
  6. 2026-10-01 03:16 UTCGHSA enrichment
  7. 2026-09-30 15:04 UTCEPSS rescore
  8. 2026-09-30 14:06 UTCVendor advisory
  9. 2026-09-30 14:06 UTCGHSA enrichment
  10. 2026-09-30 00:55 UTCEG score recompute
  11. 2026-09-30 00:55 UTCVendor advisory
  12. 2026-09-30 00:55 UTCGHSA enrichment
  13. 2026-09-29 11:45 UTCVendor advisory
  14. 2026-09-29 11:45 UTCGHSA enrichment
  15. 2026-09-28 22:32 UTCEG score recompute
  16. 2026-09-28 22:32 UTCVendor advisory
  17. 2026-09-28 22:32 UTCGHSA enrichment
  18. 2026-09-28 09:22 UTCVendor advisory
  19. 2026-09-28 09:22 UTCGHSA enrichment
  20. 2026-09-27 20:12 UTCEG score recompute
  21. 2026-09-27 20:12 UTCGHSA enrichment
  22. 2026-09-27 13:49 UTCEPSS rescore
  23. 2026-09-27 07:02 UTCGHSA enrichment
  24. 2026-09-26 17:51 UTCEG score recompute
  25. 2026-09-26 17:51 UTCGHSA enrichment
  26. 2026-09-26 15:59 UTCEPSS rescore
  27. 2026-09-26 04:38 UTCEG score recompute
  28. 2026-09-26 04:37 UTCGHSA enrichment
  29. 2026-09-25 15:24 UTCEG score recompute
  30. 2026-09-25 15:24 UTCGHSA enrichment
  31. 2026-09-25 14:52 UTCEG score recompute▲ 7.50
  32. 2026-09-25 14:52 UTCGHSA enrichment
  33. 2026-09-25 14:49 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  34. 2026-09-25 11:30 UTCNVD update
  35. 2026-09-25 10:30 UTCEG score recompute
  36. 2026-09-25 10:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-97990?
CVE-2026-97990 is a high vulnerability published on September 25, 2026. In the Linux kernel, the following vulnerability has been resolved: vdpasimnet: check TX pull result before RX copy vringhiovpull_iotlb() returns a signed byte count. A failed TX pull is currently added to the unsigned byte counter and then passed as a size_t length to receivefilter() and…
When was CVE-2026-97990 disclosed?
CVE-2026-97990 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-2026-97990 actively exploited?
CVE-2026-97990 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-2026-97990?
CVE-2026-97990 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-97990?
No fix for CVE-2026-97990 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-2026-97990 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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