Is CVE-2026-98020 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-98020 being exploited in the wild.

How severe is CVE-2026-98020?

Informational severity, published 25 September 2026.

Which products and versions are affected?

Unknown Linux kernel Affected versions prior to fix commit 7980325b2f71e3f65c1323c39792e2455da6fab6 in pds_core driver.

Is there a fix for CVE-2026-98020?

A patch was published on 2026-09-21. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-98020 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-98020?

Check whether you run Unknown Linux kernel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-98020: Linux kernel pds_core race condition in cmd_regs BAR access during reset

CVE-2026-98020 · Severity: info · Published 2026-09-25

The pds_core driver in the Linux kernel contains a race condition where firmware reset operations can unmap memory-mapped I/O registers while firmware update operations are still accessing them. This can cause the system to crash with a null pointer dereference or write to invalid memory addresses. An attacker with ability to trigger both a device reset and firmware update concurrently could crash the system or potentially cause memory corruption.

Technologies: Unknown Linux kernel. Vendors: Unknown.

Quick answers

Is CVE-2026-98020 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-98020 being exploited in the wild.
How severe is CVE-2026-98020?: Informational severity, published 25 September 2026.
Which products and versions are affected?: Unknown Linux kernel Affected versions prior to fix commit 7980325b2f71e3f65c1323c39792e2455da6fab6 in pds_core driver.
Is there a fix for CVE-2026-98020?: A patch was published on 2026-09-21. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-98020 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-98020?: Check whether you run Unknown Linux kernel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A race condition exists between pdsc_reset_prepare() and pdsc_firmware_update() in the pds_core driver. The reset path unmaps BAR registers (cmd_regs) without holding the devcmd_lock, while the firmware download loop can release and re-acquire the lock without re-checking if cmd_regs remains mapped, allowing an FLR (Function Level Reset) to unmap cmd_regs during active devcmd operations. The fix adds proper locking around BAR unmap/remap operations and adds cmd_regs validity checks after lock re-acquisition in the firmware update loop.

Affected products

<UNKNOWN> Linux kernel Affected versions prior to fix commit 7980325b2f71e3f65c1323c39792e2455da6fab6 in pds_core driver

Timeline

2026-09-25: disclosed
2026-09-21: patched

References

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