CVE-2022-0185
HighExploitedPublic exploitA 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.
Published Mar 15, 2022 · Updated Oct 14, 2026 · Also known as A-213172369, DEBIAN-CVE-2022-0185, LSN-0084-1, PUB-A-213172369, SUSE-SU-2022:0239-1, SUSE-SU-2022:0262-1, UBUNTU-CVE-2022-0185, USN-5240-1
Key Facts
Patch immediately- CVE-2022-0185 is a high-severity vulnerability (CVSS 8.4 v3.1) affecting Linux Kernel, H300e Firmware (Netapp), H300s Firmware (Netapp) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 21, 2024. Public exploit code is available.
- EPSS estimates a 25% probability of exploitation in the next 30 days.
- Fixed versions are available, including :linux_kernel: :2022-06-05, bpftool 4.18.0-348.12.2.el8_5, bpftool 5.10.46-2.ph4.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
25%
Higher than 97.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-0185 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 21, 2024 | Sep 11, 2024 | Not reported |
| Industry KEV feed | Mar 21, 2024 | Sep 11, 2024 | Not reported |
| CIRCL KEV | Aug 21, 2024 | Sep 11, 2024 | Not reported |
| ENISA EUVD | Aug 21, 2024 | n/a | Not reported |
Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Affected Products
594 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Linux KernelLinux | See advisory | 5.4.173 |
| H300e FirmwareNetapp | See advisory | n/a |
| H300s FirmwareNetapp | See advisory | n/a |
| H410c FirmwareNetapp | See advisory | n/a |
| H410s FirmwareNetapp | See advisory | n/a |
Patched Releases
:linux_kernel:
:2022-06-05
bpftool
4.18.0-348.12.2.el8_5, 5.10.46-2.ph4, 5.10.96-90.460.amzn2022, 5.15.73-45.135.amzn2022, 6.1.10-15.42.amzn2023
cluster-md-kmp-64kb
5.3.18-150300.59.43.1
cluster-md-kmp-azure
5.3.18-150300.38.37.1
cluster-md-kmp-default
5.3.18-150300.59.43.1, 5.3.18-24.99.1
cluster-md-kmp-preempt
5.3.18-150300.59.43.1
cluster-md-kmp-rt
5.3.18-150300.71.1, 5.3.18-68.1
dlm-kmp-64kb
5.3.18-150300.59.43.1
dlm-kmp-azure
5.3.18-150300.38.37.1
dlm-kmp-default
5.3.18-150300.59.43.1, 5.3.18-24.99.1
dlm-kmp-preempt
5.3.18-150300.59.43.1
dlm-kmp-rt
5.3.18-150300.71.1, 5.3.18-68.1
dtb-al
5.3.18-150300.59.43.1
dtb-allwinner
5.3.18-150300.59.43.1
dtb-altera
5.3.18-150300.59.43.1
dtb-amd
5.3.18-150300.59.43.1
dtb-amlogic
5.3.18-150300.59.43.1
dtb-apm
5.3.18-150300.59.43.1
dtb-arm
5.3.18-150300.59.43.1
dtb-broadcom
5.3.18-150300.59.43.1
dtb-cavium
5.3.18-150300.59.43.1
dtb-exynos
5.3.18-150300.59.43.1
dtb-freescale
5.3.18-150300.59.43.1
dtb-hisilicon
5.3.18-150300.59.43.1
dtb-lg
5.3.18-150300.59.43.1
Timeline
Publicly disclosed
Mar 15, 2022
Added to Industry KEV feed
Mar 21, 2024
Added to CISA KEV
Aug 21, 2024
Added to CIRCL KEV
Aug 21, 2024
Added to ENISA EUVD
Aug 21, 2024
Last updated
Oct 14, 2026
Weakness Type
- CWE-190 Integer Overflow or Wraparound
- CWE-191 Integer Underflow (Wrap or Wraparound)
References
- advisoryRHSA-2022:0176
- advisoryRHSA-2022:0186
- advisoryRHSA-2022:0187
- advisoryRHSA-2022:0188
- advisoryRHSA-2022:0231
FAQ
Common Questions.
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.
Affected: Linux Kernel; H300e Firmware (Netapp); H300s Firmware (Netapp), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 21, 2024.
Yes. It was added on Aug 21, 2024 with a federal remediation due date of Sep 11, 2024.
Public exploit code is available.
Fixed versions are available, including :linux_kernel: :2022-06-05, bpftool 4.18.0-348.12.2.el8_5, bpftool 5.10.46-2.ph4.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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