Vulnerability in Linux kernel (CVE-2026-92493)
Summary
Vulnerability in Linux kernel (CVE-2026-92493). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
cpufreq: amd-pstate-ut: Skip tests when amd-pstate driver is not active
The crash issue may occur when modprobe amd_pstate_ut on intel platform.
amd_pstate_ut: 1 amd_pstate_ut_acpi_cpc_valid success!
amd_pstate_ut: 2 amd_pstate_ut_check_enabled success!
BUG: kernel NULL pointer dereference, address: 0000000000000080
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
CPU: 0 PID: 20300 Comm: modprobe
Kdump: loaded Tainted: G O 6.6.0-0010.rc1.ctl4.x86_64 #1
Hardware name: FiberHome R2200 V5/Xeon Boards, BIOS 3.1a 02/24/2020
RIP: 0010:amd_pstate_ut_check_perf+0x141/0x280 [amd_pstate_ut]
Call Trace:
amd_pstate_ut_init+0x1b/0xff0 [amd_pstate_ut]
? __pfx_amd_pstate_ut_init+0x10/0x10 [amd_pstate_ut]
do_one_initcall+0x42/0x2e0
? kmalloc_trace+0x26/0x90
do_init_module+0x60/0x240
__se_sys_init_module+0x185/0x1c0
do_syscall_64+0x62/0x190
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Add state detection to amd pstate driver to prevent amd_pstate_ut driver
from testing on non-AMD platforms.
(ML: adjust title)
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-92493 has been found in Linux kernel.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2026-92493" on the vendor's site.
CVE-2026-92493 (Linux kernel)
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in Linux kernel.
Check the vendor advisory for the affected versions of Linux kernel.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Linux kernel を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-92493 linux
- Ubuntu UBUNTU-CVE-2026-92493 linux-hwe-edge
References
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web nvd.nist.gov
- web github.com