Is there a patch available for CVE-2026-98020?

Yes, a patch is available for CVE-2026-98020. Update the affected software to the latest version immediately.

Linux CVE-2026-98020

EUVD-2026-86673

2026-09-25 Linux

GHSA-qm2m-cwg6-99v6

Information Disclosure Linux

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Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

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

pds_core: fix cmd_regs access racing BAR unmap on reset

pdsc_reset_prepare() and pdsc_reset_done()'s pdsc_map_bars() error path clear/iounmap cmd_regs without devcmd_lock, and pdsc_legacy_firmware_update()'s download loop derefs cmd_regs after dropping and retaking the lock without re-checking. An FLR concurrent with a devlink flash can unmap cmd_regs under an in-flight devcmd, causing a NULL deref or a write to unmapped MMIO.

Take devcmd_lock across the BAR unmap/remap, and re-check cmd_regs in the download loop. Only the PF maps cmd_regs and runs devcmd, so skip the unmap on a VF, as pdsc_remove() and pdsc_reset_done() already do.

A reset that completes entirely within the unlocked window is not a correctness problem for the image: the device clears its update session, so a resumed download is rejected, and it verifies the staged image before writing a flash slot, reporting PDS_RC_BAD_FW rather than activating it.

pdsc_unmap_bars() also clears info_regs, intr_status and intr_ctrl. The interrupt and start/stop readers of those are quiesced before the unmap by pdsc_fw_down(), which frees the interrupts and tears down the queues. The debugfs readers are not, since those files outlive a reset; that is pre-existing and out of scope here.

Affected VersionsENISA

Linux patch: 7.2.7

Linux e96094c1d11cce4deb5da3c0500d49041ab845b8 <09f831bfe39de5b8026fefb3d106b5cc93272170

Linux f6ec6ac9432941ec85a2221c91b1ecfc85680d89

Linux 6.8

Linux e96094c1d11cce4deb5da3c0500d49041ab845b8 <2cc697565fd19b5ba2d100cdd4a20dd6d263abc2

Linux 6.7.4 <6.8

Linux 6.6.16 <6.7

Linux e96094c1d11cce4deb5da3c0500d49041ab845b8 <7980325b2f71e3f65c1323c39792e2455da6fab6

Linux patch: 6.18.53

Linux patch: 0

Linux patch: 6.12.111

Linux patch: 7.3-rc3

Linux e96094c1d11cce4deb5da3c0500d49041ab845b8 <fa31bd14c5042c6315bb2182c963f03ca6e79ca4

Linux 692488941283d72362274620b9abd28109fc459f

Affected Packages

euvd linux fix: 6.7, 6.8

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Sep 25, 2026 - 11:02 EUVD

CVE Published

Sep 25, 2026 - 10:23 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 95% exploitable

Data Quality

3 sources

Confidence: Low

EUVD

CVE.org

EPSS MSRC

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

No CVSS yet + weak signal (CWE or non-zero EPSS)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.