CVE-2026-68450

UNRATEDCVSS · not yet scoredTrending — 5 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%CVSS v2: —Exploit: None knownExposed: 0

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

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

btrfs: free mapping node on duplicate reloc root insert

__add_reloc_root() allocates a mapping_node before inserting it into rc->reloc_root_tree. If rb_simple_insert() finds an existing entry, it returns the existing rb_node and leaves the newly allocated node unlinked.

The error path then returns -EEXIST without freeing the new node. Since the node was never inserted into reloc_root_tree, the later cleanup in put_reloc_control() cannot find it either.

Free the newly allocated node before returning -EEXIST.

The callers currently assert that -EEXIST should not happen, so this is a defensive cleanup for an unexpected duplicate insert path. If the path is ever reached, the local allocation should still be released.

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%
EPSS %ILE
5%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 19, 2026

References (7)

Vendor Advisories for CVE-2026-68450(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 22× 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. 2026-08-19 17:33 UTCGHSA enrichment
  2. 2026-08-19 17:32 UTCNVD update
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-19 16:47 UTCGHSA enrichment
  5. 2026-08-19 16:43 UTCMITRE cvelistV5
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-17 06:30 UTCGHSA enrichment
  10. 2026-08-17 06:18 UTCNVD update
  11. 2026-08-17 05:35 UTCGHSA enrichment
  12. 2026-08-17 05:24 UTCMITRE cvelistV5
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-15 01:30 UTCEPSS rescore
  16. 2026-08-14 21:44 UTCEG score recompute
  17. 2026-08-14 21:44 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-12 13:51 UTCEPSS rescore
  20. 2026-08-12 01:20 UTCNVD update
  21. 2026-08-12 01:05 UTCEG score recompute
  22. 2026-08-12 01:05 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-68450?
CVE-2026-68450 is a publicly disclosed vulnerability published on August 12, 2026. In the Linux kernel, the following vulnerability has been resolved: btrfs: free mapping node on duplicate reloc root insert addrelocroot() allocates a mapping_node before inserting it into rc->relocroottree. If rbsimpleinsert() finds an existing entry, it returns the existing rb_node and leaves the…
When was CVE-2026-68450 disclosed?
CVE-2026-68450 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68450 actively exploited?
CVE-2026-68450 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 94.6% of all scored CVEs.
How do I remediate CVE-2026-68450?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68450, 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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