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TI-2026-68172 Aliases CVE-2026-98281GHSA-fwjp-32v8-7pp8

Linux futex: Also allocate private hash on vfork()

Priority LOW 33Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 5 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

The Linux kernel did not allocate a private futex hash on vfork(), even though Jann demonstrated that vfork() gives access to the mm. The fix allocates the private hash on vfork() as it already does for other CLONE_VM users, so no private futex waiters exist before the hash is allocated. CVSS 3.1 scores it 7.8 (HIGH), and Red Hat rates it Moderate.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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.

Why it matters now

EPSS 0.00127 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.18.54, 7.1, 7.2.8 +1Red Hat: 5 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.18.33 to before 6.18.54; 7.0.10 to before 7.16.18.54, 7.1Patch availableCNA
LinuxLinux7.1 and later6.18.54, 7.2.8, 7.3Patch availableCNA
  • Linux VendorLinux Affected 6.18.33 to before 6.18.54; 7.0.10 to before 7.1 Fixed in 6.18.54, 7.1 Patch available CNA
  • Linux VendorLinux Affected 7.1 and later Fixed in 6.18.54, 7.2.8, 7.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Install a fixed kernel for your branch: 6.18.54, 7.1, 7.2.8 or 7.3. Red Hat Enterprise Linux 6, 9 and 10 and OpenShift Container Platform 4 and 5 have no fix available or planned at the time of writing.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Linux (Linux) Fixed in 6.18.54, 7.1
  • Fix · CNA Linux (Linux) Fixed in 6.18.54, 7.2.8, 7.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
Not affected: 4 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-98281
  2. 2026-10-06 Alias added: GHSA-fwjp-32v8-7pp8
  3. 2026-10-07 CVSS score added · CNA
  4. 2026-10-11 Affected versions changed · Red Hat
  5. 2026-10-11 CVSS score added · Red Hat
  6. 2026-10-19 Fix available: Linux/[email protected] · CNA
  7. 2026-10-30 Affected versions changed · Red Hat
  8. 2026-11-03 CVSS score changed · Red Hat

References

Other 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences