CVE-2025-38206

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-07-04. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

exfat: fix double free in delayed_free

The double free could happen in the following path.

exfat_create_upcase_table() exfat_create_upcase_table() : return error exfat_free_upcase_table() : free ->vol_utbl exfat_load_default_upcase_table : return error exfat_kill_sb() delayed_free() exfat_free_upcase_table() <--------- double free This patch set ->vol_util as NULL after freeing it.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-18). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 4, 2025

Last Modified

September 2, 2026

Advisory Details (5)

Auto-updated Jul 30, 2026
Patch available.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4327-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Web page

exfat: fix double free in delayed_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd
Web page

exfat: fix double free in delayed_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152
Web page

exfat: fix double free in delayed_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22
Web page

exfat: fix double free in delayed_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15

Patch Availability(25)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-oracle-edge (5.15.0.1090.96~20.04.1) @ focal2026-10-18ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1096.94) @ jammy2026-10-18ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1096.105~20.04.1) @ focal2026-10-18ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1088.84) @ jammy2026-10-18ubuntu
ubuntulinux-tools-nvidia-tegra-igx-rt-5.15 (5.15.0.1034.36) @ jammy2026-10-18ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34) @ plucky2026-10-18ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1035.38) @ noble2026-10-18ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1014.14) @ plucky2026-10-18ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34~24.04.1) @ noble2026-10-18ubuntu
ubuntulinux-tools-aws-edge (6.14.0-1015.15~24.04.1) @ noble2026-10-18ubuntu
ubuntulinux-tools-gcp-edge (6.14.0-1018.19~24.04.1) @ noble2026-10-18ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1056 (5.15.0-1056.60) @ jammy2026-10-18ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1014.14~24.04.1) @ noble2026-10-18ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1092.96) @ jammy2026-10-18ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1092.82) @ jammy2026-10-18ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1096.81) @ jammy2026-10-18ubuntu
redhatkernel-0:5.14.0-284.164.1.el9_22026-04-08redhat
redhatkernel-rt-0:5.14.0-284.164.1.rt14.449.el9_22026-04-08redhat
redhatkernel-0:5.14.0-70.173.1.el9_02026-04-08redhat
redhatkernel-rt-0:5.14.0-70.173.1.rt21.245.el9_02026-04-08redhat
redhatkernel-0:5.14.0-570.98.1.el9_62026-03-17redhat
redhatkernel-0:5.14.0-427.114.1.el9_42026-03-11redhat
redhatkernel-0:6.12.0-124.39.1.el10_12026-02-25redhat
redhatkernel-0:5.14.0-611.35.1.el9_72026-02-23redhat
linuxKernel @ 5.10.239 (fixes >=5.7.0)—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.

Affected Packages

(5 across 4 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)
  • every version up to 6.1.187-1: fixed in 6.1.187-1
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (46 versions)
  • every version up to 5.10.244-1: fixed in 5.10.244-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.16~rc7-1~exp1 (63 versions)
  • every version up to 6.16.3-1: fixed in 6.16.3-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(16)

Data Freshness Timeline

(refreshed 11× in last 7d / 36× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 191 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 93 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  4. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  5. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  6. 2026-10-18 16:59 UTCEG score recompute
  7. 2026-10-18 16:59 UTCVendor advisory
  8. 2026-10-18 16:59 UTCGHSA enrichmentGHSA-349q-hp2f-r4hf · GitHub severity HIGH · GitHub CVSS 7.8
  9. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  10. 2026-10-18 05:36 UTCEG score recompute
  11. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-10-12 17:07 UTCEG score recompute
  17. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  18. 2026-10-11 20:40 UTCEG score recompute
  19. 2026-10-11 18:51 UTCEG score recompute
  20. 2026-10-11 15:28 UTCEG score recompute
  21. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-10-11 04:31 UTCOSV refresh
  23. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-10-08 17:09 UTCEPSS rescoreEPSS 0.2% · 7th percentile
Show 73 more
  1. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  4. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-09-26 00:24 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-09-21 16:49 UTCOSV refresh
  14. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  26. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  27. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  28. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  29. 2026-09-02 13:46 UTCVendor advisory
  30. 2026-09-02 13:45 UTCGHSA enrichmentGHSA-349q-hp2f-r4hf · GitHub severity HIGH · GitHub CVSS 7.8
  31. 2026-09-02 12:56 UTCEG score recompute
  32. 2026-09-02 12:56 UTCVendor advisory
  33. 2026-09-02 12:56 UTCGHSA enrichmentGHSA-349q-hp2f-r4hf · GitHub severity HIGH · GitHub CVSS 7.8
  34. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  35. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  36. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  37. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  38. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  39. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  40. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  41. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  42. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  43. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  44. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  45. 2026-08-20 21:01 UTCOSV refresh
  46. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  47. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  48. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  49. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  50. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  51. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  52. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  53. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  54. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  55. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  56. 2026-08-07 16:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  57. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  58. 2026-08-05 13:06 UTCEG score recompute
  59. 2026-08-05 13:06 UTCVendor advisory
  60. 2026-08-05 13:06 UTCGHSA enrichmentGHSA-349q-hp2f-r4hf · GitHub severity HIGH · GitHub CVSS 7.8
  61. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  62. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  63. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  64. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  65. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  66. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  67. 2026-07-30 07:07 UTCEG score recompute
  68. 2026-07-30 07:07 UTCVendor advisory
  69. 2026-07-30 07:07 UTCGHSA enrichmentGHSA-349q-hp2f-r4hf · GitHub severity HIGH · GitHub CVSS 7.8
  70. 2026-07-30 06:24 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  71. 2026-07-30 01:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  72. 2026-07-28 15:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  73. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile

Frequently asked(5)

What is CVE-2025-38206?
CVE-2025-38206 is a high-severity vulnerability; its CVE record was published on July 4, 2025. In the Linux kernel, the following vulnerability has been resolved: exfat: fix double free in delayed_free The double free could happen in the following path. exfatcreateupcase_table() exfatcreateupcase_table() : return error exfatfreeupcasetable() : free ->volutbl exfatloaddefaultupcasetable :…
When was the CVE record for CVE-2025-38206 published?
The CVE record for CVE-2025-38206 was published on July 4, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 2, 2026; the record at its source may have been updated since.
Is CVE-2025-38206 actively exploited?
CVE-2025-38206 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-38206?
CVE-2025-38206 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-38206?
A fix for CVE-2025-38206 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-38206 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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