Read the docs
TI-2023-25284 Aliases CVE-2023-46813GHSA-w26h-mgrc-mcqq

An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with…

Priority LOW 34Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 24 fixed, 1 without a fix

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

Summary

An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00733 54th percentileScored 2026-11-07
Fix Partial Red Hat: 9 advisoriesRed Hat: 24 fixed, 1 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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 6.5.9VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.5.9 Vulnerable ·Linux

Remediation

Red Hat 9 advisories

  • RHSA-2024:0897 Released 2024-02-20 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-513.18.1.el8_9
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-513.18.1.el8_9, kernel-4.18.0-513.18.1.el8_9, kernel-abi-stablelists-4.18.0-513.18.1.el8_9 +19
  • RHSA-2024:0881 Released 2024-02-20 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-513.18.1.rt7.320.el8_9, kernel-rt-core-4.18.0-513.18.1.rt7.320.el8_9, kernel-rt-debug-4.18.0-513.18.1.rt7.320.el8_9 +9
    • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt-4.18.0-513.18.1.rt7.320.el8_9, kernel-rt-core-4.18.0-513.18.1.rt7.320.el8_9, kernel-rt-debug-4.18.0-513.18.1.rt7.320.el8_9 +7
  • RHSA-2024:0724 Released 2024-02-07 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-tools-libs-devel-4.18.0-372.91.1.el8_6
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bpftool-4.18.0-372.91.1.el8_6, kernel-4.18.0-372.91.1.el8_6, kernel-abi-stablelists-4.18.0-372.91.1.el8_6 +19
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.91.1.el8_6, perf-4.18.0-372.91.1.el8_6
Show 6 more Red Hat advisories
  • RHSA-2024:0575 Released 2024-01-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.43.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.43.1.el8_8, kernel-4.18.0-477.43.1.el8_8, kernel-abi-stablelists-4.18.0-477.43.1.el8_8 +19
  • RHSA-2024:0432 Released 2024-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.85.1.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.85.1.el9_0, kernel-debug-devel-matched-5.14.0-70.85.1.el9_0, kernel-devel-5.14.0-70.85.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.85.1.el9_0, kernel-5.14.0-70.85.1.el9_0, kernel-abi-stablelists-5.14.0-70.85.1.el9_0 +14
  • RHSA-2024:0431 Released 2024-01-25 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.85.1.rt21.156.el9_0, kernel-rt-core-5.14.0-70.85.1.rt21.156.el9_0, kernel-rt-debug-5.14.0-70.85.1.rt21.156.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.85.1.rt21.156.el9_0, kernel-rt-core-5.14.0-70.85.1.rt21.156.el9_0, kernel-rt-debug-5.14.0-70.85.1.rt21.156.el9_0 +9
  • RHSA-2024:0461 Released 2024-01-25 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-362.18.1.el9_3, libperf-5.14.0-362.18.1.el9_3
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-362.18.1.el9_3, kernel-64k-debug-devel-matched-5.14.0-362.18.1.el9_3, kernel-64k-devel-5.14.0-362.18.1.el9_3 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.2.0-362.18.1.el9_3, kernel-5.14.0-362.18.1.el9_3, kernel-64k-5.14.0-362.18.1.el9_3 +29
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-362.18.1.el9_3, kernel-rt-core-5.14.0-362.18.1.el9_3, kernel-rt-debug-5.14.0-362.18.1.el9_3 +9
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-362.18.1.el9_3, kernel-rt-core-5.14.0-362.18.1.el9_3, kernel-rt-debug-5.14.0-362.18.1.el9_3 +11
  • RHSA-2024:0448 Released 2024-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.48.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.48.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.48.1.el9_2, kernel-64k-devel-5.14.0-284.48.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.48.1.el9_2, kernel-5.14.0-284.48.1.el9_2, kernel-64k-5.14.0-284.48.1.el9_2 +29
  • RHSA-2024:0439 Released 2024-01-25 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-core-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-debug-5.14.0-284.48.1.rt14.333.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-core-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-debug-5.14.0-284.48.1.rt14.333.el9_2 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2024:0897
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2024:0461
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2024:0724
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2024:0432
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:0461
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2024:0432
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2024:0897
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:0461
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2024:0724
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2024:0432
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2024:0461
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2024:0431
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:0439
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2024:0881
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2024:0461
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2024:0431
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:0439
Red Hat Enterprise Linux for Real Time (v. 8)Fixed RHSA-2024:0881
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2024:0724
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-46813
  2. 2026-10-03 Alias added: GHSA-w26h-mgrc-mcqq

References

Patch 4

Other 2

  • 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