In the Linux kernel, the following vulnerability has been resolved:
xfs: don't livelock in scrub on a circular unlinked list
LOLLM points out that online fsck can livelock if an unlinked inode list contains a loop. Use a bitmap to detect cycles.
CVE-2026-80820
UNRATEDCVSS · not yet scoredTrending — 3 sources updated this week
—
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.
- CVSS v3
- —
- 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
- —
- EG Risk
- —
- EPSS PROB
- 0%
- EPSS %ILE
- 7%
- KEV
- Not listed
Published
September 4, 2026
Last Modified
September 4, 2026
References (4)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/159d162fe80bd56573cafde5801bd5a90a3dd1ac
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/527eaaefddb6ec5c83a06c9a1559960dd6361753
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56407a61a8bb85b884de802d39635abdb0ea7408
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/599453f83458b57995290a1d31200c263e2c2691
Vendor Advisories for CVE-2026-80820(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(3 across 3 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 6.1.106-1 ... 7.2~rc7-1~exp1 (352 versions) | — | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 6.12.100-1 ... 6.12.96-1 (34 versions) | 6.12.107-1 | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | 6.12.100-1 ... 7.1~rc7-1~exp1 (169 versions) | 7.1.12-1 | — |
Data Freshness Timeline
(refreshed 11× in last 7d / 23× 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.
- 2026-09-19 01:37 UTCVendor advisory
- 2026-09-19 01:37 UTCGHSA enrichment
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-16 05:15 UTCEPSS rescore
- 2026-09-16 04:53 UTCVendor advisory
- 2026-09-16 04:53 UTCGHSA enrichment
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-13 08:09 UTCVendor advisory
- 2026-09-13 08:09 UTCGHSA enrichment
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-10 11:25 UTCGHSA enrichment
- 2026-09-08 22:01 UTCEPSS rescore
- 2026-09-07 14:41 UTCEG score recompute
- 2026-09-07 14:41 UTCVendor advisory
- 2026-09-07 14:40 UTCGHSA enrichment
- 2026-09-06 13:48 UTCEPSS rescore
- 2026-09-05 15:31 UTCEPSS rescore
- 2026-09-04 16:22 UTCNVD update
- 2026-09-04 15:29 UTCEG score recompute
- 2026-09-04 15:29 UTCMITRE cvelistV5first tracked
Related CVEs(same vendor)
Same vendor
10 shownmsrc
Frequently asked(4)
What is CVE-2026-80820?
CVE-2026-80820 is a publicly disclosed vulnerability published on September 4, 2026. In the Linux kernel, the following vulnerability has been resolved: xfs: don't livelock in scrub on a circular unlinked list LOLLM points out that online fsck can livelock if an unlinked inode list contains a loop. Use a bitmap to detect cycles.
When was CVE-2026-80820 disclosed?
CVE-2026-80820 was first published in the National Vulnerability Database on September 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80820 actively exploited?
CVE-2026-80820 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 93.5% of all scored CVEs.
How do I remediate CVE-2026-80820?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80820, 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
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-80820
Is Your Infrastructure Affected by CVE-2026-80820?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.