CVE-2023-53537

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-04. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: 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:

f2fs: fix to avoid use-after-free for cached IPU bio

xfstest generic/019 reports a bug:

kernel BUG at mm/filemap.c:1619! RIP: 0010:folio_end_writeback+0x8a/0x90 Call Trace: end_page_writeback+0x1c/0x60 f2fs_write_end_io+0x199/0x420 bio_endio+0x104/0x180 submit_bio_noacct+0xa5/0x510 submit_bio+0x48/0x80 f2fs_submit_write_bio+0x35/0x300 f2fs_submit_merged_ipu_write+0x2a0/0x2b0 f2fs_write_single_data_page+0x838/0x8b0 f2fs_write_cache_pages+0x379/0xa30 f2fs_write_data_pages+0x30c/0x340 do_writepages+0xd8/0x1b0 __writeback_single_inode+0x44/0x370 writeback_sb_inodes+0x233/0x4d0 __writeback_inodes_wb+0x56/0xf0 wb_writeback+0x1dd/0x2d0 wb_workfn+0x367/0x4a0 process_one_work+0x21d/0x430 worker_thread+0x4e/0x3c0 kthread+0x103/0x130 ret_from_fork+0x2c/0x50

The root cause is: after cp_error is set, f2fs_submit_merged_ipu_write() in f2fs_write_single_data_page() tries to flush IPU bio in cache, however f2fs_submit_merged_ipu_write() missed to check validity of @bio parameter, result in submitting random cached bio which belong to other IO context, then it will cause use-after-free issue, fix it by adding additional validity check.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

October 4, 2025

Last Modified

August 5, 2026

Advisory Details (6)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

f2fs: fix to avoid use-after-free for cached IPU bio - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b2f423fda64fb49213aa0ed5056079cf295a5df2
generic

f2fs: fix to avoid use-after-free for cached IPU bio - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/af4ce124d7bd74cb839bbdaccffbb416771a56b5
generic

f2fs: fix to avoid use-after-free for cached IPU bio - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a7f63283af6befc0f91d549f4f6917dff7479a9
generic

f2fs: fix to avoid use-after-free for cached IPU bio - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97ec6f1788cc6bee3f8c89cb908e1a2a1cd859bb
generic

f2fs: fix to avoid use-after-free for cached IPU bio - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7d058f0ab161437369ad6e45a4b67c2886e71373
generic

f2fs: fix to avoid use-after-free for cached IPU bio - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5cdb422c839134273866208dad5360835ddb9794

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.10.180—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 15× in last 7d / 46× 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 107 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-53537?
CVE-2023-53537 is a high vulnerability published on October 4, 2025. In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free for cached IPU bio xfstest generic/019 reports a bug: kernel BUG at mm/filemap.c:1619! RIP: 0010:folioendwriteback+0x8a/0x90 Call Trace: endpagewriteback+0x1c/0x60 f2fswriteend_io+0x199/0x420…
When was CVE-2023-53537 disclosed?
CVE-2023-53537 was first published in the National Vulnerability Database on October 4, 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-2023-53537 actively exploited?
CVE-2023-53537 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 95.4% of all scored CVEs.
What is the CVSS score of CVE-2023-53537?
CVE-2023-53537 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53537?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53537, 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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