CVE-2024-58088

Kernel worker hang via recursive BPF locking

Published Mar 12, 2025 · Updated May 11, 2026

Improper locking in BPF cgroup storage in the Linux kernel allows local users to hang a kernel worker through crafted BPF programs. The cgroup-storage map-free path passes NULL rather than the map's busy counter to bpf_local_storage_map_free, allowing recursive storage updates while local_storage->lock is held. Exploitation requires local low-privilege access and coordinated fentry and tracepoint BPF programs that repeatedly create and destroy cgroup-storage maps; the resulting lock recursion stalls the affected worker.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in BPF cgroup storage in the Linux kernel allows local users to hang a kernel worker through crafted BPF programs. The cgroup-storage map-free path passes NULL rather than the map's busy counter to bpf_local_storage_map_free, allowing recursive storage updates while local_storage->lock is held. Exploitation requires local low-privilege access and coordinated fentry and tracepoint BPF programs that repeatedly create and destroy cgroup-storage maps; the resulting lock recursion stalls the affected worker.

The record

CVE
CVE-2024-58088
Published
Mar 12, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 12, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.2
  2. Affected versionversion=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <6ecb9fa14eec5f15d97c84c36896871335f6ddfb
  3. Affected versionversion=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <c78f4afbd962f43a3989f45f3ca04300252b19b5
  4. Affected versionversion=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <fac674d2bd68f3479f27328626b42d1eebd11fef
  5. Affected versionversion=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <fcec95b4ab3e7bc6b2f36e5d59f7e24104ea87f7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <6ecb9fa14eec5f15d97c84c36896871335f6ddfb; version=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <c78f4afbd962f43a3989f45f3ca04300252b19b5; version=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <fac674d2bd68f3479f27328626b42d1eebd11fef; version=c4bcfb38a95edb1021a53f2d0356a78120ecfbe4 <fcec95b4ab3e7bc6b2f36e5d59f7e24104ea87f7

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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