CASCACascade Atlas

Evidence dossier

CVE-2022-0185

CVE-2022-0185

68.0–86.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Feb 11, 2022
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

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

FIRST EPSS25.15%

2026-07-18 · v2026.06.15 · percentile 97.7%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

redhatoriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

Linux Kernel Heap-Based Buffer Overflow Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.251510000000; percentile 0.976930000000

Applicability

Cited product scope

Trace impact →
linuxlinux_kernel
[{"status": "affected", "version": "8.4"}]unknown
n/akernel
[{"status": "affected", "version": "8.4"}]unknown
Unknown vendorUnknown product
cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.1; end excluding 5.4.173supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.5; end excluding 5.10.93supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.11; end excluding 5.15.16supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*; start including 5.16; end excluding 5.16.2supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.4
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2
nvd@nist.govCVSS 2.0 · role PrimaryAV:L/AC:L/Au:N/C:C/I:C/A:C
8.4
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.