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CVE-2022-49682· NVD / CVE Program· CNA Linux

xtensa: Fix refcount leak bug in time.c

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: 0.25% (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 0dcc1dd8a5dd9240639f1051dfaa2dffc9fbbde5, 0e403a383c14b63c86bd9df085b7e573e9caee64, 3e5eb904d9ba657308fc75a5de434b0e58dcb8d7.

Low priority for now. Upgrade to Linux Linux 0dcc1dd8a5dd9240639f1051dfaa2dffc9fbbde5, 0e403a383c14b63c86bd9df085b7e573e9caee64, 3e5eb904d9ba657308fc75a5de434b0e58dcb8d7 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

In the Linux kernel, the following vulnerability has been resolved: xtensa: Fix refcount leak bug in time.c In calibrate_ccount(), of_find_compatible_node() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 16th percentile
CWE
—

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 · 0.3%

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-2022-49682

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 4.9.321
  • linux linux kernel4.10 and later · before 4.14.286
  • linux linux kernel4.15 and later · before 4.19.250
  • linux linux kernel4.20 and later · before 5.4.202
  • linux linux kernel5.5 and later · before 5.10.127
  • linux linux kernel5.11 and later · before 5.15.51
  • linux linux kernel5.16 and later · before 5.18.8
  • linux linux kernel5.19

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

    • 4.9affected
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before 3e5eb904d9ba657308fc75a5de434b0e58dcb8d7affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before 7de4502af68f4f3932f450157f5483eb7b33cb74affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before f1eaf4ba5372ad111f687a80c67e270708e14c23affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before e5234a9d64a976abd134a14710dcd5188158a7c5affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before af0ff2da01521144bc11194f4c26485d7c9cee73affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before 0dcc1dd8a5dd9240639f1051dfaa2dffc9fbbde5affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before 0e403a383c14b63c86bd9df085b7e573e9caee64affected · git
    • 205ad548a7426fb6813760cd9917d3fc24122576 and later · before a0117dc956429f2ede17b323046e1968d1849150affected · git
    • before 4.9not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.14-15.18.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now
  • CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
    77This week
  • CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
    77This week
  • CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
    77This week

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 Linux0dcc1dd8a5dd9240639f1051dfaa2dffc9fbbde5Vendor (CNA)
Linux Linux0e403a383c14b63c86bd9df085b7e573e9caee64Vendor (CNA)
Linux Linux3e5eb904d9ba657308fc75a5de434b0e58dcb8d7Vendor (CNA)
Linux Linux7de4502af68f4f3932f450157f5483eb7b33cb74Vendor (CNA)
Linux Linuxa0117dc956429f2ede17b323046e1968d1849150Vendor (CNA)
Linux Linuxaf0ff2da01521144bc11194f4c26485d7c9cee73Vendor (CNA)
Linux Linuxe5234a9d64a976abd134a14710dcd5188158a7c5Vendor (CNA)
Linux Linuxf1eaf4ba5372ad111f687a80c67e270708e14c23Vendor (CNA)
debian:linux5.18.14-1 · Debian:12Package 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.

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.

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)

—

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.

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 (7 more)

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

All records