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NVD / CVE Program· CNA Linux

CVE-2022-49206: RDMA/mlx5: Fix memory leak in error flow for subscribe event routine

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: 0.26% (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 0174a89663a5ef83617da15bf24c0af2f62b6c7f, 087f9c3f2309ed183f7e4b85ae57121d8663224d, 414b4e8738484379f18d6c4e780787c80dbf8a2c.

Low priority for now. Upgrade to Linux Linux 0174a89663a5ef83617da15bf24c0af2f62b6c7f, 087f9c3f2309ed183f7e4b85ae57121d8663224d, 414b4e8738484379f18d6c4e780787c80dbf8a2c 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: RDMA/mlx5: Fix memory leak in error flow for subscribe event routine In case the second xa_insert() fails, the obj_event is not released. Fix the error unwind flow to free that memory to avoid a memory leak.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 19th 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-2022-49206

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 kernel5.3 and later · before 5.4.189
  • linux linux kernel5.5 and later · before 5.10.110
  • linux linux kernel5.11 and later · before 5.15.33
  • linux linux kernel5.16 and later · before 5.16.19
  • linux linux kernel5.17 and later · before 5.17.2

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

    • 5.3affected
    • 7597385371425febdaa8c6a1da3625d4ffff16f5 and later · before 0174a89663a5ef83617da15bf24c0af2f62b6c7faffected · git
    • 7597385371425febdaa8c6a1da3625d4ffff16f5 and later · before c98d903ff9e79c210beddea4e6bc15ac38e25aa5affected · git
    • 7597385371425febdaa8c6a1da3625d4ffff16f5 and later · before 8dd392e352d3269938fea32061a74655a613f929affected · git
    • 7597385371425febdaa8c6a1da3625d4ffff16f5 and later · before d66498507801fd9a20307a15a0814a0a016c3cdeaffected · git
    • 7597385371425febdaa8c6a1da3625d4ffff16f5 and later · before 414b4e8738484379f18d6c4e780787c80dbf8a2caffected · git
    • 7597385371425febdaa8c6a1da3625d4ffff16f5 and later · before 087f9c3f2309ed183f7e4b85ae57121d8663224daffected · git
    • before 5.3not affected · semver
    • 5.4.189 and later · up to and including 5.4.*not affected · semver
    • 5.10.110 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.17.3-15.17.3-1

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-2022-49204Feb 26, 2025 · bpf, sockmap: Fix more uncharged while msg has more_data
    22Monitor
  • ← EarlierCVE-2022-49205Feb 26, 2025 · bpf, sockmap: Fix double uncharge the mem of sk_msg
    31Monitor
  • Later →CVE-2022-49207Feb 26, 2025 · bpf, sockmap: Fix memleak in sk_psock_queue_msg
    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 Linux0174a89663a5ef83617da15bf24c0af2f62b6c7fVendor (CNA)
Linux Linux087f9c3f2309ed183f7e4b85ae57121d8663224dVendor (CNA)
Linux Linux414b4e8738484379f18d6c4e780787c80dbf8a2cVendor (CNA)
Linux Linux8dd392e352d3269938fea32061a74655a613f929Vendor (CNA)
Linux Linuxc98d903ff9e79c210beddea4e6bc15ac38e25aa5Vendor (CNA)
Linux Linuxd66498507801fd9a20307a15a0814a0a016c3cdeVendor (CNA)
debian:linux5.17.3-1 · 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.

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-401 · Missing Release of Memory after Effective Lifetime

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 (5 more)

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

All records