CVE-2023-53420

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-09-18. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: 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:

ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr()

Here is a BUG report from syzbot:

BUG: KASAN: slab-out-of-bounds in ntfs_list_ea fs/ntfs3/xattr.c:191 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_listxattr+0x401/0x570 fs/ntfs3/xattr.c:710 Read of size 1 at addr ffff888021acaf3d by task syz-executor128/3632

Call Trace: ntfs_list_ea fs/ntfs3/xattr.c:191 [inline] ntfs_listxattr+0x401/0x570 fs/ntfs3/xattr.c:710 vfs_listxattr fs/xattr.c:457 [inline] listxattr+0x293/0x2d0 fs/xattr.c:804

Fix the logic of ea_all iteration. When the ea->name_len is 0, return immediately, or Add2Ptr() would visit invalid memory in the next loop.

[[email protected]: lines of the patch have changed]

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

September 18, 2025

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3c675ddffb17a8b1e32efad5c983254af18b12c2
generic

ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/721b75ea2dfce53a8890dff92ae01afca8e74f88
generic

ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c86a2517df6c9304db8fb12b77136ec7a5d85994
generic

ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f3380d895e28a32632eb3609f5bd515adee4e5a1

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.15.121—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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 43× 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.

Showing the most recent 100 of 110 total refreshes for this CVE.

  1. 2026-08-07 16:25 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-53420?
CVE-2023-53420 is a high vulnerability published on September 18, 2025. In the Linux kernel, the following vulnerability has been resolved: ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr() Here is a BUG report from syzbot: BUG: KASAN: slab-out-of-bounds in ntfslistea fs/ntfs3/xattr.c:191 [inline] BUG: KASAN: slab-out-of-bounds in…
When was CVE-2023-53420 disclosed?
CVE-2023-53420 was first published in the National Vulnerability Database on September 18, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53420 actively exploited?
CVE-2023-53420 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 95.5% of all scored CVEs.
What is the CVSS score of CVE-2023-53420?
CVE-2023-53420 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2023-53420?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53420, 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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