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CVE-2026-72027— mm/compaction: handle free_pages_prepare() properly in compaction_free()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.9版本存在安全漏洞，该漏洞源于free_pages_prepare()可能失败但compaction_free()未处理该失败情况，导致失败页面被添加回cc->freepages，可能引发数据损坏。

CVSS 7.8 · High EPSS 0.18% · P7

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 733aea0b3a7bba0451dfc19322665de13a5b7af4< de8577db09039d4950239b01446ab5ead9028ab4 affected
733aea0b3a7bba0451dfc19322665de13a5b7af4< 018d7ad26cb8bdfe9842f2ca68a42b0bfdcc82fe affected
733aea0b3a7bba0451dfc19322665de13a5b7af4< 23afc3786acf359c135093893fb43a436768c832 affected
733aea0b3a7bba0451dfc19322665de13a5b7af4< 7da7d599b8a83271c464adfd5ef160202b470570 affected
6.9 affected
< 6.9 unaffected
6.12.97≤ 6.12.* unaffected
6.18.40≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-72027

Vulnerability Information
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Vulnerability Title
mm/compaction: handle free_pages_prepare() properly in compaction_free()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.9版本存在安全漏洞，该漏洞源于free_pages_prepare()可能失败但compaction_free()未处理该失败情况，导致失败页面被添加回cc->freepages，可能引发数据损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 733aea0b3a7bba0451dfc19322665de13a5b7af4 ~ de8577db09039d4950239b01446ab5ead9028ab4 -
Linux Linux 6.9 -

II. Public POCs for CVE-2026-72027

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III. Intelligence Information for CVE-2026-72027

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Patches & Fixes for CVE-2026-72027 (4)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72451 9.8 CRITICAL xfrm: Fix xfrm state cache insertion race
CVE-2026-72323 9.8 CRITICAL ipv4: igmp: Fix potential UAF in igmp_gq_start_timer()
CVE-2026-72322 9.8 CRITICAL ipv6: mcast: Fix potential UAF in MLD delayed work
CVE-2026-72436 9.8 CRITICAL netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVE-2026-72129 9.8 CRITICAL nvmet-rdma: handle inline data with a nonzero offset
CVE-2026-72130 9.8 CRITICAL nvmet-auth: reject short AUTH_RECEIVE buffers
CVE-2026-72206 9.8 CRITICAL ntfs: validate index block header more strictly
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72319 9.8 CRITICAL ipvs: ensure inner headers in ICMP errors are in headroom
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72137 9.8 CRITICAL xfrm: nat_keepalive: avoid double free on send error
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72027

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