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CVE-2026-72412— Linux kernel 安全漏洞

CVSS 9.3 · Critical EPSS 0.18% · P8

Affected Version Matrix 6

ベンダープロダクトVersion Rangeステータス
LinuxLinuxc98175b7917fa81cd499b1527c4a57fd7d36711e< fda07c8e4b54b9105f1ca73f0adea7b244d405f4affected
c98175b7917fa81cd499b1527c4a57fd7d36711e< d4bb00704a66024502261fa7a523c07420249feaaffected
7.0affected
< 7.0unaffected
7.1.5≤ 7.1.*unaffected
7.2≤ *unaffected
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I. CVE-2026-72412の基本情報

脆弱性情報
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脆弱性タイトル
s390/mm: Fix handling of _PAGE_UNUSED pte bit
ソース: CVE Program / CVE List V5
脆弱性説明
In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of _PAGE_UNUSED pte bit The _PAGE_UNUSED softbit should not really be lying around. Its sole purpose is to signal to try_to_unmap_one() and try_to_migrate_one() that the page can be discarded instead of being moved / swapped. KVM has no way to know why a page is being unmapped, so it sets the bit on userspace ptes corresponding to unused guest pages every time they get unmapped. KVM has no reasonable way to clear the bit once the page is in use again. While set_ptes() checks and clears the bit, other paths that set new ptes did not. This led to used pages being thrown out as if they were unused, causing guest corruption. Fix the issue by clearing the _PAGE_UNUSED bit for present ptes in set_pte(), i.e. whenever a present pte is getting set. The check in set_ptes() is then redundant and can be removed. Also fix gmap_helper_try_set_pte_unused() to only set the bit if the pte is present; the _PAGE_UNUSED bit is only defined for present ptes and thus should not be set for non-present ptes.
ソース: CVE Program / CVE List V5
CVSS情報
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
ソース: CVE Program / CVE List V5
脆弱性タイプ
N/A
ソース: CVE Program / CVE List V5
脆弱性タイトル
Linux kernel 安全漏洞
ソース: CNNVD (China National Vulnerability Database)
脆弱性説明
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 7.0版本存在安全漏洞，该漏洞源于_PAGE_UNUSED pte位处理不当，导致已使用的页面被当作未使用而丢弃，可能造成客户机损坏。
ソース: CNNVD (China National Vulnerability Database)
CVSS情報
N/A
ソース: CNNVD (China National Vulnerability Database)
脆弱性タイプ
N/A
ソース: CNNVD (China National Vulnerability Database)

影響を受ける製品

ベンダープロダクト影響を受けるバージョンCPE購読
LinuxLinux c98175b7917fa81cd499b1527c4a57fd7d36711e ~ fda07c8e4b54b9105f1ca73f0adea7b244d405f4 -
LinuxLinux 7.0 -

II. CVE-2026-72412の公開POC

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III. CVE-2026-72412のインテリジェンス情報

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CVE-2026-72412 补丁与修复 (2)

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

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-724729.8 CRITICALnfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-744289.8 CRITICALrxrpc: Fix double unlock in rxrpc_recvmsg()
CVE-2026-724739.8 CRITICALxprtrdma: Decouple req recycling from RPC completion
CVE-2026-744339.8 CRITICALrxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-720989.8 CRITICALdm-verity: fix buffer overflow in FEC calculation
CVE-2026-744349.8 CRITICALrxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-722999.8 CRITICALtipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-724779.8 CRITICALfs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-722499.8 CRITICALnetfilter: flowtable: use dst in this direction when pushing IPIP header
CVE-2026-722519.8 CRITICALnetfilter: nf_nat_sip: reload possible stale data pointer
CVE-2026-721309.8 CRITICALnvmet-auth: reject short AUTH_RECEIVE buffers
CVE-2026-722489.8 CRITICALnetfilter: flowtable: support IPIP tunnel with direct xmit

Showing 20 of 845 CVEs. View all on vendor page →

IV. 関連脆弱性

同じ製品: Linux
同じベンダー: Linux

V. CVE-2026-72412へのコメント

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