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NVD / CVE Program· CNA Linux

CVE-2024-36918: bpf: Check bloom filter map value size

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 608e13706c8b6c658a0646f09ebced74ec367f7c, a8d89feba7e54e691ca7c4efc2a6264fa83f3687, c418afb9bf23e2f2b76cb819601e4a5d9dbab42d.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 608e13706c8b6c658a0646f09ebced74ec367f7c, a8d89feba7e54e691ca7c4efc2a6264fa83f3687, c418afb9bf23e2f2b76cb819601e4a5d9dbab42d 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: bpf: Check bloom filter map value size This patch adds a missing check to bloom filter creating, rejecting values above KMALLOC_MAX_SIZE. This brings the bloom map in line with many other map types. The lack of this protection can cause kernel crashes for value sizes that overflow int's. Such a crash was caught by syzkaller. The next patch adds more guard-rails at a lower level.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 30, 2024
Updated
Aug 5, 2026
EPSS
0.2% · 14th 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.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

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Follow CVE-2024-36918

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 kernel5.16 and later · before 6.1.91
  • linux linux kernel6.2 and later · before 6.6.31
  • linux linux kernel6.7 and later · before 6.8.10
  • linux linux kernel6.9

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

    • 5.16affected
    • 9330986c03006ab1d33d243b7cfe598a7a3c1baa and later · before fa6995eeb62e74b5a1480c73fb7b420c270784d3affected · git
    • 9330986c03006ab1d33d243b7cfe598a7a3c1baa and later · before 608e13706c8b6c658a0646f09ebced74ec367f7caffected · git
    • 9330986c03006ab1d33d243b7cfe598a7a3c1baa and later · before c418afb9bf23e2f2b76cb819601e4a5d9dbab42daffected · git
    • 9330986c03006ab1d33d243b7cfe598a7a3c1baa and later · before a8d89feba7e54e691ca7c4efc2a6264fa83f3687affected · git
    • before 5.16not affected · semver
    • 6.1.91 and later · up to and including 6.1.*not affected · semver
    • 6.6.31 and later · up to and including 6.6.*not affected · semver
    • 6.8.10 and later · up to and including 6.8.*not affected · semver
    • 6.9 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.94-16.1.94-1
Debian:13linuxbefore 6.8.11-16.8.11-1

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-2024-36915May 30, 2024 · nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
    28Monitor
  • ← EarlierCVE-2024-36917May 30, 2024 · block: fix overflow in blk_ioctl_discard()
    22Monitor
  • Later →CVE-2024-36919May 30, 2024 · scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload
    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 Linux608e13706c8b6c658a0646f09ebced74ec367f7cVendor (CNA)
Linux Linuxa8d89feba7e54e691ca7c4efc2a6264fa83f3687Vendor (CNA)
Linux Linuxc418afb9bf23e2f2b76cb819601e4a5d9dbab42dVendor (CNA)
Linux Linuxfa6995eeb62e74b5a1480c73fb7b420c270784d3Vendor (CNA)
debian:linux6.1.94-1 · 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.

  • CVE-2023-0179430 days apartA buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel.
    32Monitor
  • CVE-2024-4099443 days apartptp: fix integer overflow in max_vclocks_store
    31Monitor
  • CVE-2024-4100043 days apartblock/ioctl: prefer different overflow check
    31Monitor
  • CVE-2022-4883747 days apartusb: gadget: rndis: prevent integer overflow in rndis_set_response()
    31Monitor
  • CVE-2024-4213661 days apartcdrom: rearrange last_media_change check to avoid unintentional overflow
    31Monitor
  • CVE-2021-4709887 days aparthwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations
    31Monitor

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-190 · Integer Overflow or Wraparound

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (3 more)

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

All records