Vulnerability in Linux kernel's net/bluetooth/l2cap_core.c's (CVE-2022-42895)
Summary
Vulnerability in Linux kernel's net/bluetooth/l2cap_core.c's (CVE-2022-42895). Confidential information can be exposed externally.
Original description
The description as published by the source.
There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely. We recommend upgrading past commit https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e https://www.google.com/url
Source: GitHub Security Advisories (Global) 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-2022-42895 has been found in Linux kernel's net/bluetooth/l2cap_core.c's.
Confidential information can be exposed externally. CVSS score: 5.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel's net/bluetooth/l2cap_core.c's CVE-2022-42895" on the vendor's site.
CVE-2022-42895 (Linux kernel's net/bluetooth/l2cap_core.c's) — CWE-824 / CVSS v3 5.1
Attack vector: local / unauthenticated / 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-824) exists in Linux kernel's net/bluetooth/l2cap_core.c's.
Check the vendor advisory for the affected versions of Linux kernel's net/bluetooth/l2cap_core.c's.
Severity: Medium (CVSS 5.1/10). Confidential information can be exposed externally.
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
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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's net/bluetooth/l2cap_core.c's を使っているサービスとバージョンを洗い出す。
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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-2022-42895 linux Fixed in: 5.10.158-1
- Ubuntu UBUNTU-CVE-2022-42895 linux-aws Fixed in: 4.4.0-1116.122
References
- patch github.com
- patch kernel.dance
- web nvd.nist.gov
- web cert-portal.siemens.com
- web github.com