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TI-2026-68113 Aliases CVE-2026-98222GHSA-8jg9-f732-244h

Integer overflow in Linux kernel encrypted key handling

Priority LOW 22Published · Updated

Key facts

Attack vector
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Privileges required
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User interaction
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Attack complexity
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Impact type
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Confidentiality · integrity · availability
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Fix status
Partial Red Hat: 17 fixed, 4 without a fix

No CVSS vector from any source. Fix status from CNA and Red Hat.

Summary

The Linux kernel from 2.6.38 before the fixed versions is affected. In the encrypted key code, a 16-bit length field overflows when the key description and payload lengths are combined, so the allocation is too small and a later copy writes past the end of the buffer.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

In the Linux kernel, the following vulnerability has been resolved: KEYS: encrypted: fix integer overflow of datablob_len encrypted_key_alloc() stores datablob_len in a u16. It is computed from multiple string and payload lengths. If the result exceeds U16_MAX, the assignment truncates the allocation size. KASAN reports a 32760-byte slab-out-of-bounds write when __ekey_init() copies the master key description into the undersized buffer. The total payload length stored in key->datalen is also a u16. Use check_add_overflow() to reject values that do not fit either destination, and use kzalloc_flex() for the flexible-array allocation.

Why it matters now

EPSS 0.00168 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.12.112, 6.18.54, 7.2.8 +1Red Hat: 5 advisoriesRed Hat: 17 fixed, 4 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.38 and later6.12.112, 6.18.54, 7.2.8, 7.3Patch availableCNA
  • Linux VendorLinux Affected 2.6.38 and later Fixed in 6.12.112, 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

Update the Linux kernel to 6.12.112, 6.18.54, 7.2.8 or 7.3. Red Hat fixes it in RHSA-2026:90365, RHSA-2026:92208, RHSA-2026:92209 and RHSA-2026:93413. Red Hat lists no fix available for Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 and Red Hat OpenShift Container Platform 5.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

  • Fix · CNA Linux (Linux) Fixed in 6.12.112, 6.18.54, 7.2.8, 7.3

Red Hat 5 advisories

  • RHSA-2026:95346 Released 2026-11-06 · Red Hat rating Critical
    OpenShift Container Platform 4.22.22 bug fix and security update
    • Red Hat OpenShift Container Platform 4.22 rhcos-aarch64-4.22.9.8.202611032353-0, rhcos-ppc64le-4.22.9.8.202611032353-0, rhcos-s390x-4.22.9.8.202611032353-0 +1
  • RHSA-2026:93413 Released 2026-11-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • 10Base-SMTV kernel-modules-internal-6.12.0-211.72.1.el10_2
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.72.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.72.1.el10_2, kernel-64k-devel-6.12.0-211.72.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.72.1.el10_2, kernel-64k-6.12.0-211.72.1.el10_2, kernel-64k-core-6.12.0-211.72.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.72.1.el10_2, libperf-6.12.0-211.72.1.el10_2
    • Red Hat Enterprise Linux Hidden (v. 10) kernel-modules-internal-6.12.0-211.72.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.72.1.el10_2, kernel-rt-64k-6.12.0-211.72.1.el10_2, kernel-rt-64k-core-6.12.0-211.72.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.72.1.el10_2, kernel-rt-core-6.12.0-211.72.1.el10_2, kernel-rt-debug-6.12.0-211.72.1.el10_2 +9
  • RHSA-2026:92209 Released 2026-10-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.180.1.el8_10, kernel-4.18.0-553.180.1.el8_10, kernel-abi-stablelists-4.18.0-553.180.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.180.1.el8_10
Show 2 more Red Hat advisories
  • RHSA-2026:92208 Released 2026-10-29 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-core-4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-debug-4.18.0-553.180.1.rt7.521.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-core-4.18.0-553.180.1.rt7.521.el8_10, kernel-rt-debug-4.18.0-553.180.1.rt7.521.el8_10 +7
  • RHSA-2026:90365 Released 2026-10-26 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.61.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.61.1.el9_8, kernel-64k-devel-5.14.0-687.61.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.61.1.el9_8, kernel-64k-5.14.0-687.61.1.el9_8, kernel-64k-core-5.14.0-687.61.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.61.1.el9_8, libperf-5.14.0-687.61.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.61.1.el9_8, kernel-rt-64k-5.14.0-687.61.1.el9_8, kernel-rt-64k-core-5.14.0-687.61.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.61.1.el9_8, kernel-rt-core-5.14.0-687.61.1.el9_8, kernel-rt-debug-5.14.0-687.61.1.el9_8 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
10Base-SMTVFixed RHSA-2026:93413
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:90365
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:92209
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:90365
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:92209
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:90365
Red Hat Enterprise Linux Hidden (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:92208
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:92208
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:90365
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:90365
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:95346
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-98222
  2. 2026-10-06 Alias added: GHSA-8jg9-f732-244h
  3. 2026-10-10 Affected versions changed · Red Hat
  4. 2026-10-10 CVSS score added · Red Hat
  5. 2026-10-19 Fix available: Linux/[email protected] · CNA
  6. 2026-10-27 Fix available: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) +2 · Red Hat
  7. 2026-10-29 Fix available: RHSA-2026:90365 · Red Hat
  8. 2026-10-30 Affected versions changed · Red Hat
  9. 2026-10-30 Fix available: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8), Red Hat Enterprise Linux NFV (v. 8) +1 · Red Hat
  10. 2026-11-01 Fix available: RHSA-2026:92208 · Red Hat
  11. 2026-11-01 Fix available: RHSA-2026:92209 · Red Hat
  12. 2026-11-01 CVSS score changed · Red Hat
  13. 2026-11-02 Fix available: RHSA-2026:93413 · Red Hat
  14. 2026-11-02 Fix available: 10Base-SMTV, Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) +4 · Red Hat
  15. 2026-11-07 Fix available: RHSA-2026:95346 · Red Hat
  16. 2026-11-07 Fix available: Red Hat OpenShift Container Platform 4.22 · Red Hat

References

Other 4

  • 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