CVE-2025-38224

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-07-04. 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:

can: kvaser_pciefd: refine error prone echo_skb_max handling logic

echo_skb_max should define the supported upper limit of echo_skb[] allocated inside the netdevice's priv. The corresponding size value provided by this driver to alloc_candev() is KVASER_PCIEFD_CAN_TX_MAX_COUNT which is 17.

But later echo_skb_max is rounded up to the nearest power of two (for the max case, that would be 32) and the tx/ack indices calculated further during tx/rx may exceed the upper array boundary. Kasan reported this for the ack case inside kvaser_pciefd_handle_ack_packet(), though the xmit function has actually caught the same thing earlier.

BUG: KASAN: slab-out-of-bounds in kvaser_pciefd_handle_ack_packet+0x2d7/0x92a drivers/net/can/kvaser_pciefd.c:1528 Read of size 8 at addr ffff888105e4f078 by task swapper/4/0

CPU: 4 UID: 0 PID: 0 Comm: swapper/4 Not tainted 6.15.0 #12 PREEMPT(voluntary) Call Trace: dump_stack_lvl lib/dump_stack.c:122 print_report mm/kasan/report.c:521 kasan_report mm/kasan/report.c:634 kvaser_pciefd_handle_ack_packet drivers/net/can/kvaser_pciefd.c:1528 kvaser_pciefd_read_packet drivers/net/can/kvaser_pciefd.c:1605 kvaser_pciefd_read_buffer drivers/net/can/kvaser_pciefd.c:1656 kvaser_pciefd_receive_irq drivers/net/can/kvaser_pciefd.c:1684 kvaser_pciefd_irq_handler drivers/net/can/kvaser_pciefd.c:1733 __handle_irq_event_percpu kernel/irq/handle.c:158 handle_irq_event kernel/irq/handle.c:210 handle_edge_irq kernel/irq/chip.c:833 __common_interrupt arch/x86/kernel/irq.c:296 common_interrupt arch/x86/kernel/irq.c:286

Tx max count definitely matters for kvaser_pciefd_tx_avail(), but for seq numbers' generation that's not the case - we're free to calculate them as would be more convenient, not taking tx max count into account. The only downside is that the size of echo_skb[] should correspond to the max seq number (not tx max count), so in some situations a bit more memory would be consumed than could be.

Thus make the size of the underlying echo_skb[] sufficient for the rounded max tx value.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

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
4%
KEV
Not listed

Published

July 4, 2025

Last Modified

August 5, 2026

Advisory Details (3)

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

can: kvaser_pciefd: refine error prone echo_skb_max handling logic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d8a054b6e6824a8b52c3977ebd38c9583a63efac
generic

can: kvaser_pciefd: refine error prone echo_skb_max handling logic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a6550c9aa11e2f57f9cdaa6249cdd44d446be874
generic

can: kvaser_pciefd: refine error prone echo_skb_max handling logic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/54ec8b08216f3be2cc98b33633d3c8ea79749895

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34) @ plucky2026-07-30ubuntu
ubuntulinux-tools-aws-edge (6.14.0-1015.15~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-edge (6.14.0-1018.19~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-nvidia-edge (6.14.0-1007.7) @ noble2026-07-30ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1014.14~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34~24.04.1) @ noble2026-07-30ubuntu
linuxKernel @ 6.12.35—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

(6)

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 / 41× 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 105 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 13:06 UTCEG score recompute
  4. 2026-08-05 13:06 UTCVendor advisory
  5. 2026-08-05 13:05 UTCGHSA enrichment
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Frequently asked(5)

What is CVE-2025-38224?
CVE-2025-38224 is a high vulnerability published on July 4, 2025. In the Linux kernel, the following vulnerability has been resolved: can: kvaserpciefd: refine error prone echoskb_max handling logic echoskbmax should define the supported upper limit of echo_skb[] allocated inside the netdevice's priv. The corresponding size value provided by this driver to…
When was CVE-2025-38224 disclosed?
CVE-2025-38224 was first published in the National Vulnerability Database on July 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-2025-38224 actively exploited?
CVE-2025-38224 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 95.6% of all scored CVEs.
What is the CVSS score of CVE-2025-38224?
CVE-2025-38224 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2025-38224?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38224, 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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