Vulnerability in Linux kernel (CVE-2022-49523)
Summary
Vulnerability in Linux kernel (CVE-2022-49523). 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:
ath11k: disable spectral scan during spectral deinit
When ath11k modules are removed using rmmod with spectral scan enabled,
crash is observed. Different crash trace is observed for each crash.
Send spectral scan disable WMI command to firmware before cleaning
the spectral dbring in the spectral_deinit API to avoid this crash.
call trace from one of the crash observed:
[ 1252.880802] Unable to handle kernel NULL pointer dereference at virtual address 00000008
[ 1252.882722] pgd = 0f42e886
[ 1252.890955] [00000008] *pgd=00000000
[ 1252.893478] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 1253.093035] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.89 #0
[ 1253.115261] Hardware name: Generic DT based system
[ 1253.121149] PC is at ath11k_spectral_process_data+0x434/0x574 [ath11k]
[ 1253.125940] LR is at 0x88e31017
[ 1253.132448] pc : [<7f9387b8>] lr : [<88e31017>] psr: a0000193
[ 1253.135488] sp : 80d01bc8 ip : 00000001 fp : 970e0000
[ 1253.141737] r10: 88e31000 r9 : 970ec000 r8 : 00000080
[ 1253.146946] r7 : 94734040 r6 : a0000113 r5 : 00000057 r4 : 00000000
[ 1253.152159] r3 : e18cb694 r2 : 00000217 r1 : 1df1f000 r0 : 00000001
[ 1253.158755] Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
[ 1253.165266] Control: 10c0383d Table: 5e71006a DAC: 00000055
[ 1253.172472] Process swapper/0 (pid: 0, stack limit = 0x60870141)
[ 1253.458055] [<7f9387b8>] (ath11k_spectral_process…
Source: NIST National Vulnerability Database NVD
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-2022-49523 has been found in Linux kernel.
Risk of unauthorized operations or information disclosure. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2022-49523" on the vendor's site.
CVE-2022-49523 (Linux kernel) — CWE-476 / CVSS v3 5.5
Attack vector: local / no user interaction
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 (CWE-476) exists in Linux kernel.
Check the vendor advisory for the affected versions of Linux kernel.
Severity: Medium (CVSS 5.5/10). 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。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2022-49523 linux Fixed in: 5.10.127-1
- Ubuntu UBUNTU-CVE-2022-49523 linux
References
- advisory github.com
- advisory nvd.nist.gov
- package git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org