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CVE-2026-68474— powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access()

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存在安全漏洞，该漏洞源于spufs_mem_mmap_access()函数计算本地存储偏移量时边界检查错误，未使用本地存储大小而是使用了vma->vm_end，可能导致越界访问。

CVSS 7.8 · High EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1206

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a352894d07059649398c4769dc8b645e1a1dad88< aa7aa8ba40c089762d821e3987aaae19e1f5705c affected
a352894d07059649398c4769dc8b645e1a1dad88< d479a7711f8ff127946467b910d947bd971b94ed affected
a352894d07059649398c4769dc8b645e1a1dad88< 9d3569bfdceda69d5ffd5148901e57b69954d9ef affected
a352894d07059649398c4769dc8b645e1a1dad88< d97a8f3668949a8a9d1f6202f8c53446f2d89aa7 affected
a352894d07059649398c4769dc8b645e1a1dad88< 913feef74354c653f10ecd4631df7618a95c49c2 affected
a352894d07059649398c4769dc8b645e1a1dad88< 3c1e92f75e11a11492b8cb901fceeb9f16ae6415 affected
a352894d07059649398c4769dc8b645e1a1dad88< 4efa313b15925bdd864784865d6585174979294b affected
a352894d07059649398c4769dc8b645e1a1dad88< 47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6 affected
… +10 more rows
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I. Basic Information for CVE-2026-68474

Vulnerability Information
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Vulnerability Title
powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access() spufs_mem_mmap_access() computes the local store offset as address - vma->vm_start, but bounds-checks it against vma->vm_end instead of the local store size. On 64-bit, offset is always well below vma->vm_end, so the clamp never fires and len stays unbounded against the LS_SIZE buffer returned by ctx->ops->get_ls(). Reject offsets at or beyond LS_SIZE and clamp len to the remaining space, mirroring the guard already used by spufs_mem_mmap_fault() and spufs_ps_fault().
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存在安全漏洞，该漏洞源于spufs_mem_mmap_access()函数计算本地存储偏移量时边界检查错误，未使用本地存储大小而是使用了vma->vm_end，可能导致越界访问。
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 a352894d07059649398c4769dc8b645e1a1dad88 ~ aa7aa8ba40c089762d821e3987aaae19e1f5705c -
Linux Linux 2.6.27 -

II. Public POCs for CVE-2026-68474

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III. Intelligence Information for CVE-2026-68474

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Patches & Fixes for CVE-2026-68474 (7)

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-2026-68474

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