CVE-2026-98281

HIGHPre-NVD 7.87.8
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-10-06. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

futex: Also allocate private hash on vfork()

As Jann demonstrated, it is entirely feasible to access the mm through vfork(). Therefore we need to allocate a private hash on vfork() as well as any other CLONE_VM user.

Specifically, it must be avoided to have (private) futex waiters before allocating the private hash.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
35
EG Risk 35/100

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 (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 6, 2026

Last Modified

October 7, 2026

Advisory Details (3)

Auto-updated Oct 7, 2026
Patch available.
Web page

futex: Also allocate private hash on vfork() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b61b6f95d6722ddbbbd09e689fa41b55fd36f9a5
Web page

futex: Also allocate private hash on vfork() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eecbafa8cabbc4d1482f6a5e2acc25a8f934681b
Web page

futex: Also allocate private hash on vfork() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5468a4855b63b30156a79e5248e01bf1a2c18dd7

Vendor Advisories for CVE-2026-98281(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version up to 7.2.8-1: fixed in 7.2.8-1
—

Data Freshness Timeline

(refreshed 27× in last 7d / 37× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-13 03:58 UTCEG score recompute
  3. 2026-10-13 03:57 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-12 14:38 UTCEG score recompute
  6. 2026-10-11 19:10 UTCEG score recompute
  7. 2026-10-11 18:49 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-10-11 16:25 UTCEG score recompute
  9. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-11 13:37 UTCEG score recompute
  11. 2026-10-11 06:58 UTCEG score recompute
  12. 2026-10-11 06:57 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-10-10 19:06 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-10 07:14 UTCEG score recompute
  16. 2026-10-10 07:13 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  17. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-09 19:19 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-09 07:29 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  20. 2026-10-08 19:38 UTCEG score recompute
  21. 2026-10-08 19:38 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  22. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-10-08 07:20 UTCEG score recompute
  24. 2026-10-08 07:20 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 12 more
  1. 2026-10-07 19:30 UTCEG score recompute
  2. 2026-10-07 19:30 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8 · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-07 07:29 UTCEG score recompute
  4. 2026-10-07 07:29 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8
  5. 2026-10-07 06:57 UTCEG score recomputeFirst assessed: 7.8 HIGH
  6. 2026-10-07 06:57 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8
  7. 2026-10-07 06:56 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  8. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-10-06 09:39 UTCGHSA enrichmentGHSA-fwjp-32v8-7pp8
  10. 2026-10-06 09:28 UTCNVD update
  11. 2026-10-06 08:54 UTCEG score recompute
  12. 2026-10-06 08:52 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-98281?
CVE-2026-98281 is a high-severity vulnerability; its CVE record was published on October 6, 2026. In the Linux kernel, the following vulnerability has been resolved: futex: Also allocate private hash on vfork() As Jann demonstrated, it is entirely feasible to access the mm through vfork(). Therefore we need to allocate a private hash on vfork() as well as any other CLONE_VM user. Specifically,…
When was the CVE record for CVE-2026-98281 published?
The CVE record for CVE-2026-98281 was published on October 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 7, 2026; the record at its source may have been updated since.
Is CVE-2026-98281 actively exploited?
CVE-2026-98281 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-2026-98281?
CVE-2026-98281 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-2026-98281?
A fix for CVE-2026-98281 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-98281 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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