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CVE-2026-74514— KVM: s390: pci: Fix memory accounting for pinned/unpinned pages

AI Predicted 3.3 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1AI

T1496 · Resource Hijacking

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinux3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc< 70871b121f81d08879363cb1238a4c85c5c2800caffected
3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc< e3f732e086e438c52c7400bd2734bb166aa4752caffected
3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc< 36f6999ecde3976731a8bfc0b8e667da6f593069affected
6.0affected
< 6.0unaffected
6.18.44≤ 6.18.*unaffected
7.1.8≤ 7.1.*unaffected
7.2≤ *unaffected
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I. Basic Information for CVE-2026-74514

Vulnerability Information
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Vulnerability Title
KVM: s390: pci: Fix memory accounting for pinned/unpinned pages
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix memory accounting for pinned/unpinned pages The account_mem() and unaccount_mem() functions call get_uid() which increments the reference count of struct user_struct on every invocation. But we don't decrement the count by calling free_uid(). It also accounted/unaccounted the pages against the current->mm. But its possible the unaccount_mem() can be called from a different process context than the one that originally pinned the pages. Let's fix this by storing the pinning process user_struct and mm_struct when accounting for pinned pages, and subsequently free these resources when the pages are unpinned. [borntraeger@linux.ibm.com: Fixed whitespace]
Source: CVE Program / CVE List V5
CVSS Information
N/A
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存在安全漏洞，该漏洞源于内存记账函数处理不当，调用get_uid()增加引用计数但未释放，且在不同进程上下文中记账，可能导致内存资源管理错误。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc ~ 70871b121f81d08879363cb1238a4c85c5c2800c -
LinuxLinux 6.0 -

II. Public POCs for CVE-2026-74514

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III. Intelligence Information for CVE-2026-74514

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Patches & Fixes for CVE-2026-74514 (3)

Same Patch Batch · Linux · 2026-08-15 · 846 CVEs total

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-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-743769.8 CRITICALmd/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-744339.8 CRITICALrxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-744349.8 CRITICALrxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-721919.8 CRITICALntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-722999.8 CRITICALtipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-723989.8 CRITICALsctp: add INIT verification after cookie unpacking
CVE-2026-743849.8 CRITICALnvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-724429.8 CRITICALnetfilter: flowtable: fix and simplify IP6IP6 tunnel handling
CVE-2026-744369.8 CRITICALrxrpc: serialize kernel accept preallocation with socket teardown
CVE-2026-745459.8 CRITICALrtase: fix double free of multi-frag skb on DMA map failure
CVE-2026-720469.8 CRITICALgve: fix header buffer corruption with header-split and HW-GRO
CVE-2026-724739.8 CRITICALxprtrdma: Decouple req recycling from RPC completion

Showing top 20 of 846 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74514

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