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TI-2026-33898 Aliases CVE-2026-46174GHSA-xgq6-gg2m-2x7g

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

Priority LOW 39CWE-862Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 7 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-862.

Summary

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00153 4th percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.17, 4.5, 4.10 +8Red Hat: 1 advisoryRed Hat: 7 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux3.16.58 to before 3.17; 4.4.144 to before 4.5; 4.9.102 to before 4.103.17, 4.5, 4.10Patch availableCNA
LinuxLinux4.14 and later5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.88, 6.18.30, 7.0.7, 7.1Patch availableCNA
  • Linux VendorLinux Affected 3.16.58 to before 3.17; 4.4.144 to before 4.5; 4.9.102 to before 4.10 Fixed in 3.17, 4.5, 4.10 Patch available CNA
  • Linux VendorLinux Affected 4.14 and later Fixed in 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.88, 6.18.30, 7.0.7, 7.1 Patch available CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.16.58 to before 3.17; 4.4.144 to before 4.5; 4.9.102 to before 4.10; 4.14.1 to before 5.10.256; 5.11 to before 5.15.207; 5.16 to before 6.1.173; 6.2 to before 6.6.139; 6.7 to before 6.12.88; 6.13 to before 6.18.30; 6.19 to before 7.0.7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:-:*:*:*:*:*:*4.14VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc2:*:*:*:*:*:*4.14 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc3:*:*:*:*:*:*4.14 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc4:*:*:*:*:*:*4.14 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc5:*:*:*:*:*:*4.14 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc6:*:*:*:*:*:*4.14 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc7:*:*:*:*:*:*4.14 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.14:rc8:*:*:*:*:*:*4.14 rc8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*7.1 rc1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.16.58 to before 3.17; 4.4.144 to before 4.5; 4.9.102 to before 4.10; 4.14.1 to before 5.10.256; 5.11 to before 5.15.207; 5.16 to before 6.1.173; 6.2 to before 6.6.139; 6.7 to before 6.12.88; 6.13 to before 6.18.30; 6.19 to before 7.0.7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:-:*:*:*:*:*:* Versions 4.14 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc2:*:*:*:*:*:* Versions 4.14 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc3:*:*:*:*:*:* Versions 4.14 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc4:*:*:*:*:*:* Versions 4.14 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc5:*:*:*:*:*:* Versions 4.14 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc6:*:*:*:*:*:* Versions 4.14 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc7:*:*:*:*:*:* Versions 4.14 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.14:rc8:*:*:*:*:*:* Versions 4.14 rc8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* Versions 7.1 rc1 Vulnerable ·Linux
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*7.1 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*7.1 rc3VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* Versions 7.1 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* Versions 7.1 rc3 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 3.17, 4.5, 4.10
  • Fix · CNA Linux (Linux) Fixed in 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.88, 6.18.30, 7.0.7, 7.1

Red Hat 1 advisory

  • 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

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 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
10Base-SMTVFixed RHSA-2026:93413
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux Hidden (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:93413
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:93413
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-46174
  2. 2026-10-03 Alias added: GHSA-xgq6-gg2m-2x7g
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-19 Weakness changed · CISA ADP
  5. 2026-11-02 Fix available: RHSA-2026:93413 · Red Hat
  6. 2026-11-02 Fix available: 10Base-SMTV, Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) +4 · Red Hat

References

Patch 8

  • 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-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
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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