CVE-2026-13595

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH confidence

Score 6.8 from GitHub Security Advisory published 2026-06-29. a secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
6.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.8Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.

CVSS v3
6.8
EG Score
6.8(high)
EPSS
3.1%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 2026

Advisory Details (3)

Auto-updated Jun 29, 2026
Patch available. Sources: redhat, github_commit.
github_commit

commit c0186f14fbdb (util-linux/util-linux)

Fix landed in util-linux/util-linux commit c0186f14fbdb — awaiting tagged release

https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c
redhat

2494101 – (CVE-2026-13595) CVE-2026-13595 util-linux: util-linux: heap use-after-free in libblkid nested partition probing

https://bugzilla.redhat.com/show_bug.cgi?id=2494101
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-13595

Vendor Advisories for CVE-2026-13595(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatutil-linux-main-2.42.2-1.hum12026-06-17redhat

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.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

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 26× in last 7d / 29× 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.

  1. 2026-07-06 13:55 UTCEG score recompute
  2. 2026-07-06 13:55 UTCVendor advisory
  3. 2026-07-06 13:55 UTCGHSA enrichment
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 13:18 UTCEG score recompute
  6. 2026-07-05 13:18 UTCVendor advisory
  7. 2026-07-05 13:17 UTCGHSA enrichment
  8. 2026-07-04 12:40 UTCEG score recompute
  9. 2026-07-04 12:40 UTCVendor advisory
  10. 2026-07-04 12:40 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 12:03 UTCEG score recompute
  13. 2026-07-03 12:03 UTCVendor advisory
  14. 2026-07-03 12:03 UTCGHSA enrichment
  15. 2026-07-02 10:55 UTCEG score recompute
  16. 2026-07-02 10:55 UTCVendor advisory
  17. 2026-07-02 10:54 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-07-01 10:01 UTCEG score recompute
  21. 2026-07-01 10:01 UTCVendor advisory
  22. 2026-07-01 10:01 UTCGHSA enrichment
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-30 09:24 UTCEG score recompute
  25. 2026-06-30 09:24 UTCVendor advisory
Show 4 more
  1. 2026-06-30 09:24 UTCGHSA enrichment
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-29 08:48 UTCEG score recompute
  4. 2026-06-29 08:47 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-13595?
CVE-2026-13595 is a medium vulnerability published on June 29, 2026. A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be…
When was CVE-2026-13595 disclosed?
CVE-2026-13595 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13595 actively exploited?
CVE-2026-13595 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-13595?
CVE-2026-13595 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-13595?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13595, 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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