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NVD / CVE Program· CNA mitre

CVE-2022-24448: An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5.

Noroxi assessment

Priority: Monitor (action score 13/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.39% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: bpftool (AlmaLinux:8) 4.18.0-425.3.1.el8; kernel (AlmaLinux:8) 4.18.0-425.3.1.el8; kernel-abi-stablelists (AlmaLinux:8) 4.18.0-425.3.1.el8.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to bpftool (AlmaLinux:8) 4.18.0-425.3.1.el8; kernel (AlmaLinux:8) 4.18.0-425.3.1.el8; kernel-abi-stablelists (AlmaLinux:8) 4.18.0-425.3.1.el8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup. If a regular file is found, ENOTDIR should occur, but the server instead returns uninitialized data in the file descriptor.

LowCVSS 3.3 · v3.1—No exploit Fix available
Published
Feb 4, 2022
Updated
Jun 17, 2026
EPSS
0.3% · 33th percentile

Report tools

JSON

Action score

13

Monitor

Low priority for now.

CVSS
13 / 40 · 3.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • debian debian linux11.0
  • debian debian linux9.0
  • linux linux kernelbefore 5.16.5

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8bpftoolbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernelbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-corebefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-cross-headersbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-debugbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-debug-corebefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-debug-develbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-develbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-docbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-headersbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-modulesbefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-modules-extrabefore 4.18.0-425.3.1.el84.18.0-425.3.1.el8
AlmaLinux:8kernel-rtbefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-corebefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-debugbefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-debug-kvmbefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8
AlmaLinux:8kernel-rt-develbefore 4.18.0-425.3.1.rt7.213.el84.18.0-425.3.1.rt7.213.el8

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-24122Jan 29, 2022 · kernel/ucount.c in the Linux kernel 5.14 through 5.16.4, when unprivileged user namespaces are enabled, allows a use-after-free and privileg
    31Monitor
  • ← EarlierCVE-2022-0286Jan 31, 2022 · A flaw was found in the Linux kernel.
    22Monitor
  • Later →CVE-2021-4154Feb 4, 2022 · A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser.
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:kernel-rt4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-core4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-core4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-devel4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-kvm4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules-extra4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-devel4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-kvm4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-modules4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-modules-extra4.18.0-425.3.1.rt7.213.el8 · AlmaLinux:8Package registry (OSV)
debian:linux5.16.7-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch645.3.18-150300.59.60.4 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-64kb5.3.18-150300.59.60.4 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-azure5.3.18-150300.38.59.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-debug4.12.14-197.108.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-default4.12.14-197.108.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-default-base5.3.18-150300.59.60.4.150300.18.37.5 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-docs5.3.18-150300.59.60.4 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-kvmsmall4.12.14-197.108.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-source-azure5.3.18-150300.38.59.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-syms-azure5.3.18-150300.38.59.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-vanilla4.12.14-197.108.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kernel-zfcpdump4.12.14-197.108.1 · openSUSE:Leap 15.3Package registry (OSV)
red hat:bpftool0:4.18.0-372.91.1.el8_6 · Red Hat:rhel_eus:8.6::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-372.91.1.el8_6 · Red Hat:rhev_hypervisor:4.4::el8Package registry (OSV)
red hat:kernel0:4.18.0-372.91.1.el8_6 · Red Hat:rhel_eus:8.6::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-372.91.1.el8_6 · Red Hat:rhel_eus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-372.91.1.el8_6 · Red Hat:rhev_hypervisor:4.4::el8Package registry (OSV)

+24

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-755 · Improper Handling of Exceptional Conditions

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records