CVE-2026-72031: ata: libata-core: Add NOLPM quirk for PNY CS900 1TB SSD

CVE-2026-72031: ata: libata-core: Add NOLPM quirk for PNY CS900 1TB SSD

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

Description
===========

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

ata: libata-core: Add NOLPM quirk for PNY CS900 1TB SSD

The PNY CS900 1TB SSD (Phison PS3111-S11, DRAM-less) drops off the bus
after entering Device-Initiated Slumber during idle. With the default
med_power_with_dipm policy the link goes down (SStatus 1 SControl 300)
and does not recover, forcing the filesystem read-only. Forcing
max_performance keeps the link stable across prolonged idle.

Add a NOLPM quirk so link power management is disabled for this drive
specifically, leaving it intact for other devices on the host.

The Linux kernel CVE team has assigned CVE-2026-72031 to this issue.


Affected and fixed versions
===========================

	Fixed in 7.1.5 with commit 299739909c486bcea7445f5c3b066fdbc0d2df96
	Fixed in 7.2-rc2 with commit 462775c620197adaabc983ce847e5b9878ff4cb0

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2026-72031
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/ata/libata-core.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/299739909c486bcea7445f5c3b066fdbc0d2df96
	https://git.kernel.org/stable/c/462775c620197adaabc983ce847e5b9878ff4cb0