CVE-2024-26993

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2024-05-01. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released.

Fix the leak by adding an explicit kobject_put() call when kn is NULL.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
18.2%
KEV
Not listed

Published

May 1, 2024

Last Modified

May 12, 2026

References (23)

Vendor Advisories for CVE-2024-26993(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(29)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.8.0-38.38) @ noble2026-05-22ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.189.187) @ focal2026-05-22ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.116.106) @ jammy2026-05-22ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.189.209~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1065.65) @ jammy2026-05-22ubuntu
ubuntulinux-tools-nvidia-64k (6.8.0-1009.9) @ noble2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1047 (5.4.0-1047.51) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1058.56) @ jammy2026-05-22ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1112.124~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-tools-aws (6.8.0-1011.12) @ noble2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1035.39) @ jammy2026-05-22ubuntu
ubuntulinux-tools-iot (5.4.0.1040.38) @ focal2026-05-22ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1065.71~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1065.73~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1068.66) @ jammy2026-05-22ubuntu
ubuntulinux-tools-oracle-64k (6.8.0-1008.8) @ noble2026-05-22ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.116.116) @ jammy2026-05-22ubuntu
redhatkernel-rt-0:4.18.0-305.141.1.rt7.217.el8_42024-09-24redhat
redhatkernel-0:4.18.0-305.141.1.el8_42024-09-24redhat
redhatkernel-0:4.18.0-477.70.1.el8_82024-09-03redhat
redhatkernel-rt-0:5.14.0-70.112.1.rt21.184.el9_02024-08-13redhat
redhatkernel-0:5.14.0-70.112.1.el9_02024-08-13redhat
redhatkernel-0:4.18.0-372.109.1.el8_62024-06-26redhat
redhatkernel-rt-0:4.18.0-553.5.1.rt7.346.el8_102024-06-05redhat
redhatkernel-0:4.18.0-553.5.1.el8_102024-06-05redhat
redhatkernel-0:5.14.0-427.20.1.el9_42024-06-05redhat
redhatkernel-0:5.14.0-284.67.1.el9_22024-05-29redhat
redhatkernel-rt-0:5.14.0-284.67.1.rt14.352.el9_22024-05-29redhat
linuxKernel @ 4.19.313—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(20)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 132 total refreshes for this CVE.

  1. 2026-07-23 02:35 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
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Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2024-26993?
CVE-2024-26993 is a medium vulnerability published on May 1, 2024. In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfsbreakactive_protection() The sysfsbreakactive_protection() routine has an obvious reference leak in its error path. If the call to kernfsfindand_get() fails then kn will be NULL, so the…
When was CVE-2024-26993 disclosed?
CVE-2024-26993 was first published in the National Vulnerability Database on May 1, 2024, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-26993 actively exploited?
CVE-2024-26993 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-26993?
CVE-2024-26993 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-26993?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-26993, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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