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Noroxi
NVD / CVE Program· CNA Linux

CVE-2022-49344: af_unix: Fix a data-race in unix_dgram_peer_wake_me().

Noroxi assessment

Priority: Monitor (action score 18/100)

  • 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: 0.19% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 2.6.33, 3.11, 3.13.

Low priority for now. Upgrade to Linux Linux 2.6.33, 3.11, 3.13 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: af_unix: Fix a data-race in unix_dgram_peer_wake_me(). unix_dgram_poll() calls unix_dgram_peer_wake_me() without `other`'s lock held and check if its receive queue is full. Here we need to use unix_recvq_full_lockless() instead of unix_recvq_full(), otherwise KCSAN will report a data-race.

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 8th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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.

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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 kernel3.2.75 and later · before 3.3
  • linux linux kernel3.4.111 and later · before 3.5
  • linux linux kernel3.10.95 and later · before 3.11
  • linux linux kernel3.12.52 and later · before 3.13
  • linux linux kernel3.14.59 and later · before 3.15
  • linux linux kernel3.18.26 and later · before 3.19
  • linux linux kernel4.1.15 and later · before 4.2
  • linux linux kernel4.2.8 and later · before 4.3
  • linux linux kernel4.3.3 and later · before 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
  • 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

    • 60bc010667ef06e0fb08d5ec599c0977adc2ac72, a3b0f6e8a21ef02f69a15abac440572d8cde8c2a, ec54d5ae9d298abf01c273233de9f2bc25d80475, da8db0830a2ce63f628150307a01a315f5081202, 9964b4c4ee925b2910723e509abd7241cff1ef84, 9d054f57adc981a5f503d5eb9b259aa450b90dc5, 72032798034d921ed565e3bf8dfdc3098f6473e2, 5c77e26862ce604edea05b3442ed765e9756fe0f, bad967fdd8ecbdd171f5f243657be033d2d081a7, 58a6a46a036ce81a2a8ecaa6fc1537c894349e3f, 4.4affected
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before 95f0ba806277733bf6024e23e27e1be773701ccaaffected · git
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before 556720013c36c193d9cbfb06e7b33e51f0c39fbfaffected · git
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before c61848500a3fd6867dfa4834b8c7f97133eceb9faffected · git
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before c926ae58f24f7bd55aa2ea4add9f952032507913affected · git
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before 71e8bfc7f838cabc60cba24e09ca84c4f8321ab2affected · git
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before 8801eb3ccd2e4e3b1a01449383e3321ae6dbd9d6affected · git
    • 7d267278a9ece963d77eefec61630223fce08c6c and later · before 662a80946ce13633ae90a55379f1346c10f0c432affected · git
    • 2.6.32.70 and later · before 2.6.33affected · semver
    • 3.2.75 and later · before 3.3affected · 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

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-2022-49342Feb 26, 2025 · net: ethernet: bgmac: Fix refcount leak in bcma_mdio_mii_register
    22Monitor
  • ← EarlierCVE-2022-49343Feb 26, 2025 · ext4: avoid cycles in directory h-tree
    22Monitor
  • Later →CVE-2022-49345Feb 26, 2025 · net: xfrm: unexport __init-annotated xfrm4_protocol_init()
    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 Linux2.6.33Vendor (CNA)
Linux Linux3.11Vendor (CNA)
Linux Linux3.13Vendor (CNA)
Linux Linux3.15Vendor (CNA)
Linux Linux3.19Vendor (CNA)
Linux Linux3.3Vendor (CNA)
Linux Linux3.5Vendor (CNA)
Linux Linux4.2Vendor (CNA)
Linux Linux4.3Vendor (CNA)
Linux Linux4.4Vendor (CNA)
Linux Linux556720013c36c193d9cbfb06e7b33e51f0c39fbfVendor (CNA)
Linux Linux662a80946ce13633ae90a55379f1346c10f0c432Vendor (CNA)
Linux Linux71e8bfc7f838cabc60cba24e09ca84c4f8321ab2Vendor (CNA)
Linux Linux8801eb3ccd2e4e3b1a01449383e3321ae6dbd9d6Vendor (CNA)
Linux Linux95f0ba806277733bf6024e23e27e1be773701ccaVendor (CNA)
Linux Linuxc61848500a3fd6867dfa4834b8c7f97133eceb9fVendor (CNA)
Linux Linuxc926ae58f24f7bd55aa2ea4add9f952032507913Vendor (CNA)
debian:linux5.18.5-1 · 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.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:H/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.

ATT&CK techniques

—

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