Home/CVE/Linux Kernel Heap-Based Buffer Overflow Vulnerability
CVE

CVE-2022-0185

Linux Kernel Heap-Based Buffer Overflow Vulnerability

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.

HIGH · CVSS 8.4 ⚠ CISA KEV EPSS 0.018
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-191Integer Underflow (Wrap or Wraparound)
▤

Affected Products & Versions

12
linux kernel>= 5.1 and < 5.4.173
linux kernel>= 5.5 and < 5.10.93
linux kernel>= 5.11 and < 5.15.16
linux kernel>= 5.16 and < 5.16.2
netapp h410c firmwareall versions
netapp h300s firmwareall versions
netapp h500s firmwareall versions
netapp h700s firmwareall versions
⚠

Public Exploits & PoCs

2
pocgithub.com · CVE-2022-0185github.com
pocwww.willsroot.io · cve-2022-0185.htmlwww.willsroot.io
▣

Scoring & Timeline

8.4
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Feb 2022 · 06:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
cisaKEV-CVE-2022-0185
suse-csafopenSUSE-SU-2024:11775-1
suse-csafopenSUSE-SU-2024:13704-1
usnUSN-5362-1
msrcCVE-2022-0185
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2Mailing ListPatch
https://security.netapp.com/advisory/ntap-20220225-0003/Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/01/18/7Mailing ListPatchThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0185US Government Resource
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