CVE-2025-38139

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-07-03. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 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

A fix is available — apply it.

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

netfs: Fix oops in write-retry from mis-resetting the subreq iterator

Fix the resetting of the subrequest iterator in netfs_retry_write_stream() to use the iterator-reset function as the iterator may have been shortened by a previous retry. In such a case, the amount of data to be written by the subrequest is not "subreq->len" but "subreq->len - subreq->transferred".

Without this, KASAN may see an error in iov_iter_revert():

BUG: KASAN: slab-out-of-bounds in iov_iter_revert lib/iov_iter.c:633 [inline] BUG: KASAN: slab-out-of-bounds in iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611 Read of size 4 at addr ffff88802912a0b8 by task kworker/u32:7/1147

CPU: 1 UID: 0 PID: 1147 Comm: kworker/u32:7 Not tainted 6.15.0-rc6-syzkaller-00052-g9f35e33144ae #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: events_unbound netfs_write_collection_worker Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 iov_iter_revert lib/iov_iter.c:633 [inline] iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611 netfs_retry_write_stream fs/netfs/write_retry.c:44 [inline] netfs_retry_writes+0x166d/0x1a50 fs/netfs/write_retry.c:231 netfs_collect_write_results fs/netfs/write_collect.c:352 [inline] netfs_write_collection_worker+0x23fd/0x3830 fs/netfs/write_collect.c:374 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

July 3, 2025

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jul 31, 2026
No patch confirmed yet.
generic

netfs: Fix oops in write-retry from mis-resetting the subreq iterator - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e0fefe9bc07e6101fdc57abda3644f296c114e31
generic

netfs: Fix oops in write-retry from mis-resetting the subreq iterator - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd0edaf99a920b1a9decd773179caacacb61d0fd
generic

netfs: Fix oops in write-retry from mis-resetting the subreq iterator - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4481f7f2b3df123ec77e828c849138f75cff2bf2

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-32.32) @ plucky2026-05-30ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1012.12) @ plucky2026-05-30ubuntu
ubuntulinux-tools-oem-6.14 (6.14.0-1012.12) @ noble2026-05-30ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1012.12~24.04.1) @ noble2026-05-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-32.32~24.04.1) @ noble2026-05-30ubuntu
ubuntulinux-tools-raspi-6.14 (6.14.0-1014.14) @ plucky2026-05-30ubuntu
ubuntulinux-tools-oracle-edge (6.14.0-1013.13~24.04.1) @ noble2026-05-30ubuntu
linuxKernel @ 6.12.37—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.

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× 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 108 total refreshes for this CVE.

  1. 2026-08-07 16:26 UTCEPSS rescore
  2. 2026-08-06 13:46 UTCEPSS rescore
  3. 2026-08-05 13:07 UTCEG score recompute
  4. 2026-08-05 13:07 UTCVendor advisory
  5. 2026-08-05 13:06 UTCGHSA enrichment
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  20. 2026-07-24 02:11 UTCOSV refresh
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  20. 2026-07-06 20:34 UTCOSV refresh
  21. 2026-07-06 16:27 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2025-38139?
CVE-2025-38139 is a high vulnerability published on July 3, 2025. In the Linux kernel, the following vulnerability has been resolved: netfs: Fix oops in write-retry from mis-resetting the subreq iterator Fix the resetting of the subrequest iterator in netfsretrywrite_stream() to use the iterator-reset function as the iterator may have been shortened by a previous…
When was CVE-2025-38139 disclosed?
CVE-2025-38139 was first published in the National Vulnerability Database on July 3, 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-2025-38139 actively exploited?
CVE-2025-38139 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 69.6% of all scored CVEs.
What is the CVSS score of CVE-2025-38139?
CVE-2025-38139 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2025-38139?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38139, 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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