CVE-2026-13595

MEDIUMNVD 5.36.8▲
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory published 2026-06-29. NVD baseline CVSS 5.3; sources differ by 1.5.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 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
5.3
EG Score
6.8(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

June 29, 2026

Last Modified

August 31, 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(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuuuid-runtime (2.39.3-9ubuntu6.6) @ noble2026-09-06ubuntu
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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
util-linux2.36.1-8 ... 2.42~rc2-1 (140 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
util-linux2.38.1-5 ... 2.42~rc2-1 (118 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
util-linux2.41-5 ... 2.41.3-4 (13 versions)2.41.5-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
util-linux2.41-5 ... 2.42~rc2-1 (29 versions)2.42.2-1—

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 9× in last 7d / 73× 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 193 total refreshes for this CVE.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-10 09:34 UTCEPSS rescore
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 14:46 UTCEG score recompute
  7. 2026-09-06 14:46 UTCVendor advisory
  8. 2026-09-06 14:46 UTCGHSA enrichment
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:11 UTCEPSS rescore
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-31 18:36 UTCVendor advisory
  15. 2026-08-31 18:36 UTCGHSA enrichment
  16. 2026-08-31 17:32 UTCVendor advisory
  17. 2026-08-31 17:31 UTCGHSA enrichment
  18. 2026-08-31 16:22 UTCEG score recompute
  19. 2026-08-31 16:22 UTCVendor advisory
  20. 2026-08-31 16:22 UTCGHSA enrichment
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 18:57 UTCEG score recompute
  23. 2026-08-30 18:57 UTCVendor advisory
  24. 2026-08-30 18:57 UTCGHSA enrichment
  25. 2026-08-28 21:40 UTCEPSS rescore
Show 75 more
  1. 2026-08-27 22:48 UTCEG score recompute
  2. 2026-08-27 22:48 UTCVendor advisory
  3. 2026-08-27 22:48 UTCGHSA enrichment
  4. 2026-08-27 14:24 UTCEPSS rescore
  5. 2026-08-25 13:48 UTCEPSS rescore
  6. 2026-08-24 15:14 UTCEG score recompute
  7. 2026-08-24 15:14 UTCVendor advisory
  8. 2026-08-24 15:14 UTCGHSA enrichment
  9. 2026-08-23 14:35 UTCEG score recompute
  10. 2026-08-23 14:35 UTCVendor advisory
  11. 2026-08-23 14:35 UTCGHSA enrichment
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 13:59 UTCVendor advisory
  14. 2026-08-22 13:59 UTCGHSA enrichment
  15. 2026-08-21 13:21 UTCVendor advisory
  16. 2026-08-21 13:21 UTCGHSA enrichment
  17. 2026-08-21 12:30 UTCVendor advisory
  18. 2026-08-21 12:30 UTCGHSA enrichment
  19. 2026-08-21 06:29 UTCEG score recompute
  20. 2026-08-21 06:29 UTCVendor advisory
  21. 2026-08-21 06:29 UTCGHSA enrichment
  22. 2026-08-20 22:55 UTCEPSS rescore
  23. 2026-08-20 05:53 UTCEG score recompute
  24. 2026-08-20 05:53 UTCVendor advisory
  25. 2026-08-20 05:53 UTCGHSA enrichment
  26. 2026-08-19 17:03 UTCEPSS rescore
  27. 2026-08-18 23:21 UTCEG score recompute
  28. 2026-08-18 23:21 UTCVendor advisory
  29. 2026-08-18 23:21 UTCGHSA enrichment
  30. 2026-08-18 13:48 UTCEPSS rescore
  31. 2026-08-17 15:30 UTCEG score recompute
  32. 2026-08-17 15:30 UTCVendor advisory
  33. 2026-08-17 15:30 UTCGHSA enrichment
  34. 2026-08-16 14:56 UTCEPSS rescore
  35. 2026-08-16 14:54 UTCEG score recompute
  36. 2026-08-16 14:54 UTCVendor advisory
  37. 2026-08-16 14:54 UTCGHSA enrichment
  38. 2026-08-16 02:14 UTCEPSS rescore
  39. 2026-08-15 14:18 UTCEG score recompute
  40. 2026-08-15 14:18 UTCVendor advisory
  41. 2026-08-15 14:18 UTCGHSA enrichment
  42. 2026-08-15 01:30 UTCEPSS rescore
  43. 2026-08-14 13:41 UTCEG score recompute
  44. 2026-08-14 13:41 UTCVendor advisory
  45. 2026-08-14 13:41 UTCGHSA enrichment
  46. 2026-08-13 22:00 UTCEPSS rescore
  47. 2026-08-13 13:05 UTCVendor advisory
  48. 2026-08-13 13:05 UTCGHSA enrichment
  49. 2026-08-12 12:29 UTCEG score recompute
  50. 2026-08-12 12:29 UTCVendor advisory
  51. 2026-08-12 12:29 UTCGHSA enrichment
  52. 2026-08-11 13:42 UTCEPSS rescore
  53. 2026-08-11 11:52 UTCEG score recompute
  54. 2026-08-11 11:52 UTCVendor advisory
  55. 2026-08-11 11:52 UTCGHSA enrichment
  56. 2026-08-10 23:59 UTCEPSS rescore
  57. 2026-08-10 11:16 UTCEG score recompute
  58. 2026-08-10 11:16 UTCVendor advisory
  59. 2026-08-10 11:16 UTCGHSA enrichment
  60. 2026-08-09 13:46 UTCEPSS rescore
  61. 2026-08-09 10:39 UTCEG score recompute
  62. 2026-08-09 10:39 UTCVendor advisory
  63. 2026-08-09 10:39 UTCGHSA enrichment
  64. 2026-08-08 16:37 UTCEPSS rescore
  65. 2026-08-08 09:59 UTCEG score recompute
  66. 2026-08-08 09:59 UTCVendor advisory
  67. 2026-08-08 09:59 UTCGHSA enrichment
  68. 2026-08-07 09:23 UTCEG score recompute
  69. 2026-08-07 09:23 UTCVendor advisory
  70. 2026-08-07 09:23 UTCGHSA enrichment
  71. 2026-08-06 13:46 UTCEPSS rescore
  72. 2026-08-06 08:46 UTCEG score recompute
  73. 2026-08-06 08:46 UTCVendor advisory
  74. 2026-08-06 08:46 UTCGHSA enrichment
  75. 2026-08-05 19:17 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

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 August 31, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 93.7% of all scored CVEs.
What is the CVSS score of CVE-2026-13595?
CVE-2026-13595 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.8.
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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