CVE-2026-93795

UNRATEDCVSS · not yet scoredTrending — 6 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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

blk-cgroup: fix leaks and online flag on radix_tree_insert failure

When radix_tree_insert() fails in blkg_create(), the error path has two issues:

  • blkg->online is set to true unconditionally, even when the blkg was
never fully inserted. Move the assignment inside the success block.
  • The error path calls blkg_put() without first calling
percpu_ref_kill(). Because the refcount is still in percpu mode, percpu_ref_put() only does this_cpu_sub() without checking for zero, so blkg_release() is never triggered. This permanently leaks the blkg memory, its percpu iostat, policy data, the parent blkg reference, and the cgroup css reference — the latter preventing the cgroup from ever being destroyed.

Fix by replacing blkg_put() with percpu_ref_kill(), matching the pattern used in blkg_destroy().

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

Published

September 24, 2026

Last Modified

October 3, 2026

References (7)

Vendor Advisories for CVE-2026-93795(2)

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

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
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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
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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
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Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
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Data Freshness Timeline

(refreshed 16× in last 7d / 25× 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. 2026-10-04 23:23 UTCEPSS rescore
  2. 2026-10-03 14:26 UTCEPSS rescore
  3. 2026-10-03 11:32 UTCVendor advisory
  4. 2026-10-03 11:32 UTCGHSA enrichment
  5. 2026-10-03 11:26 UTCNVD update
  6. 2026-10-03 11:10 UTCMITRE cvelistV5
  7. 2026-10-02 02:46 UTCEG score recompute
  8. 2026-10-02 02:46 UTCVendor advisory
  9. 2026-10-02 02:46 UTCGHSA enrichment
  10. 2026-10-01 19:51 UTCEPSS rescore
  11. 2026-09-30 15:04 UTCEPSS rescore
  12. 2026-09-28 20:01 UTCEG score recompute
  13. 2026-09-28 20:01 UTCVendor advisory
  14. 2026-09-28 20:00 UTCGHSA enrichment
  15. 2026-09-28 13:52 UTCEPSS rescore
  16. 2026-09-28 13:52 UTCEPSS rescore
  17. 2026-09-27 13:49 UTCEPSS rescore
  18. 2026-09-26 15:59 UTCEPSS rescore
  19. 2026-09-25 13:23 UTCGHSA enrichment
  20. 2026-09-25 13:18 UTCNVD update
  21. 2026-09-25 12:56 UTCGHSA enrichment
  22. 2026-09-25 12:54 UTCMITRE cvelistV5
  23. 2026-09-24 17:33 UTCNVD update
  24. 2026-09-24 16:30 UTCEG score recompute
  25. 2026-09-24 16:26 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-93795?
CVE-2026-93795 is a publicly disclosed vulnerability published on September 24, 2026. In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix leaks and online flag on radixtreeinsert failure When radixtreeinsert() fails in blkg_create(), the error path has two issues: 1. blkg->online is set to true unconditionally, even when the blkg was never fully…
When was CVE-2026-93795 disclosed?
CVE-2026-93795 was first published on September 24, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93795 actively exploited?
CVE-2026-93795 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-93795?
No fix for CVE-2026-93795 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-93795 are linked in the Vendor Advisories panel on this page.

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