CVE-2022-50428

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-10-01. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 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:

ext4: fix off-by-one errors in fast-commit block filling

Due to several different off-by-one errors, or perhaps due to a late change in design that wasn't fully reflected in the code that was actually merged, there are several very strange constraints on how fast-commit blocks are filled with tlv entries:

  • tlvs must start at least 10 bytes before the end of the block, even
though the minimum tlv length is 8. Otherwise, the replay code will ignore them. (BUG: ext4_fc_reserve_space() could violate this requirement if called with a len of blocksize - 9 or blocksize - 8. Fortunately, this doesn't seem to happen currently.)
  • tlvs must end at least 1 byte before the end of the block. Otherwise
the replay code will consider them to be invalid. This quirk contributed to a bug (fixed by an earlier commit) where uninitialized memory was being leaked to disk in the last byte of blocks.

Also, strangely these constraints don't apply to the replay code in e2fsprogs, which will accept any tlvs in the blocks (with no bounds checks at all, but that is a separate issue...).

Given that this all seems to be a bug, let's fix it by just filling blocks with tlv entries in the natural way.

Note that old kernels will be unable to replay fast-commit journals created by kernels that have this commit.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
—
EPSS
4.3%
KEV
Not listed

Published

October 1, 2025

Last Modified

January 20, 2026

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 44× 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. 2026-07-22 23:04 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-21 15:23 UTCEPSS rescore
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  1. 2026-07-06 16:25 UTCEPSS rescore
  2. 2026-07-06 13:11 UTCOSV refresh
  3. 2026-07-05 02:28 UTCEPSS rescore
  4. 2026-07-04 06:29 UTCEPSS rescore
  5. 2026-07-01 15:04 UTCEPSS rescore
  6. 2026-06-30 23:21 UTCEPSS rescore
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  27. 2026-06-18 17:51 UTCEPSS rescore
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  29. 2026-06-18 01:35 UTCOSV refresh
  30. 2026-06-17 17:51 UTCEPSS rescore
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  39. 2026-06-11 13:58 UTCEPSS rescore
  40. 2026-06-11 13:58 UTCEPSS rescore
  41. 2026-06-10 13:21 UTCEPSS rescore
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  43. 2026-06-08 14:15 UTCEPSS rescore
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  45. 2026-06-07 15:23 UTCEPSS rescore
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  47. 2026-06-06 13:46 UTCEPSS rescore
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  49. 2026-06-05 22:46 UTCEPSS rescore
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  51. 2026-06-05 06:09 UTCEPSS rescore
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  62. 2026-05-29 21:49 UTCEG score recompute
  63. 2026-05-29 21:49 UTCGHSA enrichment
  64. 2026-05-29 13:43 UTCEPSS rescore

Frequently asked(5)

What is CVE-2022-50428?
CVE-2022-50428 is a medium vulnerability published on October 1, 2025. In the Linux kernel, the following vulnerability has been resolved: ext4: fix off-by-one errors in fast-commit block filling Due to several different off-by-one errors, or perhaps due to a late change in design that wasn't fully reflected in the code that was actually merged, there are several very…
When was CVE-2022-50428 disclosed?
CVE-2022-50428 was first published in the National Vulnerability Database on October 1, 2025, with the most recent update on January 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50428 actively exploited?
CVE-2022-50428 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-50428?
CVE-2022-50428 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2022-50428?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50428, 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.

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