CVE-2022-0185
Exploited in the wild. In CISA KEV since 2024‑08‑21. Fixed in 5.4.173.
What to do
Find your product and version, then upgrade to the build on the right.
- N/a KernelAffected: 8.4Upgrade to: not statedStated by: CVE record
- Linux KernelAffected: ≥ 5.1, < 5.4.173Upgrade to: 5.4.173Stated by: NVD
- Сообщество свободного программного обеспечения Debian GNU/LinuxAffected: 9Upgrade to: not statedStated by: BDU
- ООО «РусБИТех-Астра» Astra Linux Special EditionAffected: 1.6 «Смоленск»Upgrade to: not statedStated by: BDU
- ООО «Ред Софт» РЕД ОСAffected: 7.3Upgrade to: not statedStated by: BDU
Versions as the sources state them. 3 more products have version data. Full version matrix after sign-in
Coverage timeline
0 publishersAdded to CISA KEV catalog
Sourced from public security reporting — each date is when it was published, not when it happened.
What it is
From the CVE record
A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Listed as exploited in the wild since 2024-08-21.
US federal agencies must remediate by 2024-09-11.
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- Public exploits
3 sources with a proof of concept or module.
Exploit links, PoCs and Metasploit modules after sign-in- EPSS
25% chance of exploitation activity in the next 30 days, which ranks it in the 98th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
The patch came 120 days before any public exploit.
- OpenVAS check added
- EPSS band changelow → moderate
- Public exploit / PoCsource: other
- Patch availablerecord updated
- Added to CISA KEV
- Publishedweakness classified, att&ck mapped
Affected products
And 1 more affected product. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 8.4 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1190Exploit Public-Facing Applicationmedium confidence
Sources
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