CVE-2026-72027

mm/compaction: handle free_pages_prepare() properly in compaction_free()

HIGH
7.8
CVSS Score
Published: August 15, 2026 at 05:51 AM UTC
Updated: August 17, 2026 at 06:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: mm/compaction: handle free_pages_prepare() properly in compaction_free() free_pages_prepare() can fail but compaction_free() does not handle the failure case. Failed pages should not be added back to cc->freepages for future use, since they can be either PageHWPoison or free_page_is_bad() and might cause data corruption.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.9 ≤ v < 6.12.976.9 ≤ v < 6.18.406.9 ≤ v < 7.1.56.9 ≤ v < 7.26.9733aea0b3a7bba0451dfc19322665de13a5b7af4
Vendor states this is fixed in 018d7ad26cb8bdfe9842f2ca68a42b0bfdcc82fe (fixed)
Vendor states this is fixed in 23afc3786acf359c135093893fb43a436768c832 (fixed)
Vendor states this is fixed in 7da7d599b8a83271c464adfd5ef160202b470570 (fixed)
Vendor states this is fixed in de8577db09039d4950239b01446ab5ead9028ab4 (fixed)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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