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CVE-2022-48641· NVD / CVE Program· CNA Linux

netfilter: ebtables: fix memory leak when blob is malformed

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: 0.23% (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 11ebf32fde46572b0aaf3c2bdd97d923ef5a03ab, 1e98318af2f163eadaff815abcef38d27ca92c1e, 38cf372b17f0a5f35c1b716a100532d539f0eb33.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 11ebf32fde46572b0aaf3c2bdd97d923ef5a03ab, 1e98318af2f163eadaff815abcef38d27ca92c1e, 38cf372b17f0a5f35c1b716a100532d539f0eb33 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: netfilter: ebtables: fix memory leak when blob is malformed The bug fix was incomplete, it "replaced" crash with a memory leak. The old code had an assignment to "ret" embedded into the conditional, restore this.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Apr 28, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th 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-2022-48641

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 kernel4.14.292 and later · before 4.14.295
  • linux linux kernel4.19.257 and later · before 4.19.260
  • linux linux kernel5.4.212 and later · before 5.4.215
  • linux linux kernel5.10.140 and later · before 5.10.146
  • linux linux kernel5.15.64 and later · before 5.15.71
  • linux linux kernel5.19.6 and later · before 5.19.12

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

    • afd01382594d643e1adeb16826423b418cdf8b8b and later · before 754e8b74281dd54a324698803483f47cf3355ae1affected · git
    • 358765beb836f5fc2ed26b5df4140d5d3548ac11 and later · before 1e98318af2f163eadaff815abcef38d27ca92c1eaffected · git
    • 160c4eb47db03b96c0c425358e7595ebefe8094d and later · before 11ebf32fde46572b0aaf3c2bdd97d923ef5a03abaffected · git
    • 624c30521233e110cf50ba01980a591e045036ae and later · before ebd97dbe3c55d68346b9c5fb00634a7f5b10bbeeaffected · git
    • 1b2c5428f773d60c116c7b1e390432e0cfb63cd6 and later · before d5917b7af7cae0e2804f9d127a03268035098b7faffected · git
    • e53cfa017bf4575d0b948a8f45313ef66d897136 and later · before 38cf372b17f0a5f35c1b716a100532d539f0eb33affected · git
    • 7997eff82828304b780dc0a39707e1946d6f1ebf and later · before 62ce44c4fff947eebdf10bb582267e686e6835c9affected · git
    • 4.14.292 and later · before 4.14.295affected · semver
    • 4.19.257 and later · before 4.19.260affected · semver
    • 5.4.212 and later · before 5.4.215affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1

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

Published before and after this one in the same product

  • ← EarlierCVE-2022-48639Apr 28, 2024 · net: sched: fix possible refcount leak in tc_new_tfilter()
    22Monitor
  • ← EarlierCVE-2022-48640Apr 28, 2024 · bonding: fix NULL deref in bond_rr_gen_slave_id
    22Monitor
  • Later →CVE-2022-48642Apr 28, 2024 · netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain()
    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 Linux11ebf32fde46572b0aaf3c2bdd97d923ef5a03abVendor (CNA)
Linux Linux1e98318af2f163eadaff815abcef38d27ca92c1eVendor (CNA)
Linux Linux38cf372b17f0a5f35c1b716a100532d539f0eb33Vendor (CNA)
Linux Linux4.14.295Vendor (CNA)
Linux Linux4.19.260Vendor (CNA)
Linux Linux5.10.146Vendor (CNA)
Linux Linux5.15.71Vendor (CNA)
Linux Linux5.19.12Vendor (CNA)
Linux Linux5.4.215Vendor (CNA)
Linux Linux62ce44c4fff947eebdf10bb582267e686e6835c9Vendor (CNA)
Linux Linux754e8b74281dd54a324698803483f47cf3355ae1Vendor (CNA)
Linux Linuxd5917b7af7cae0e2804f9d127a03268035098b7fVendor (CNA)
Linux Linuxebd97dbe3c55d68346b9c5fb00634a7f5b10bbeeVendor (CNA)
debian:linux6.0.2-1 · 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).

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
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 (6 more)

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

All records