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NVD / CVE Program· CNA Linux

CVE-2022-49316: NFSv4: Don't hold the layoutget locks across multiple RPC calls

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.21% (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: Linux Linux 08d7a26d115cc7892668baa9750f64bd8baca29b, 0ee5b9644f06b4d3cdcd9544f43f63312e425a4c, 6949493884fe88500de4af182588e071cf1544ee.

Low priority for now. Upgrade to Linux Linux 08d7a26d115cc7892668baa9750f64bd8baca29b, 0ee5b9644f06b4d3cdcd9544f43f63312e425a4c, 6949493884fe88500de4af182588e071cf1544ee 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

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Don't hold the layoutget locks across multiple RPC calls When doing layoutget as part of the open() compound, we have to be careful to release the layout locks before we can call any further RPC calls, such as setattr(). The reason is that those calls could trigger a recall, which could deadlock.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-49316

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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

Affected versions

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

  • linux linux kernelbefore 4.19.247
  • linux linux kernel4.20 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.122
  • linux linux kernel5.11 and later · before 5.15.47
  • linux linux kernel5.16 and later · before 5.17.15
  • linux linux kernel5.18 and later · before 5.18.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.18affected
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before 6b3fc1496e7227cd6a39a80bbfb7588ef7c7a010affected · git
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before a2b3be930e79cc5d9d829f158e31172b2043f0cdaffected · git
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before 0ee5b9644f06b4d3cdcd9544f43f63312e425a4caffected · git
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before d4c2a041ed3ba114502d5ed6ace5b1a48d637a8eaffected · git
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before 08d7a26d115cc7892668baa9750f64bd8baca29baffected · git
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before ea759ae0a9ae5acee677d722129710ac89cc59c1affected · git
    • 56f487f8c8fc5d6e582b79a86fc132d050129e15 and later · before 6949493884fe88500de4af182588e071cf1544eeaffected · git
    • before 4.18not affected · semver
    • 4.19.247 and later · up to and including 4.19.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1
Red Hat:enterprise_linux:9::appstreambpftool-debuginfobefore 0:7.2.0-362.8.1.el9_30:7.2.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-develbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-64k-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-64k-develbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debug-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debug-develbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-develbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-devel-matchedbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-docbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-tools-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-zfcpdump-develbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamkernel-zfcpdump-devel-matchedbefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3
Red Hat:enterprise_linux:9::appstreamlibperf-debuginfobefore 0:5.14.0-362.8.1.el9_30:5.14.0-362.8.1.el9_3

+55

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-2022-49314Feb 26, 2025 · tty: Fix a possible resource leak in icom_probe
    22Monitor
  • ← EarlierCVE-2022-49315Feb 26, 2025 · drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()
    22Monitor
  • Later →CVE-2022-49317Feb 26, 2025 · f2fs: avoid infinite loop to flush node pages
    22Monitor

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
Linux Linux08d7a26d115cc7892668baa9750f64bd8baca29bVendor (CNA)
Linux Linux0ee5b9644f06b4d3cdcd9544f43f63312e425a4cVendor (CNA)
Linux Linux6949493884fe88500de4af182588e071cf1544eeVendor (CNA)
Linux Linux6b3fc1496e7227cd6a39a80bbfb7588ef7c7a010Vendor (CNA)
Linux Linuxa2b3be930e79cc5d9d829f158e31172b2043f0cdVendor (CNA)
Linux Linuxd4c2a041ed3ba114502d5ed6ace5b1a48d637a8eVendor (CNA)
Linux Linuxea759ae0a9ae5acee677d722129710ac89cc59c1Vendor (CNA)
debian:linux5.18.5-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.2.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-362.8.1.el9_3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

No commit or PR link among the references.

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).

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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-667 · Improper Locking

CVSS vector

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

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (6 more)

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

All records