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CVE-2026-74327— vmalloc: fix NULL pointer dereference in is_vm_area_hugepages()

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is_vm_area_hugepages()函数中未检查find_vm_area()的返回值，可能导致空指针取消引用，引发内核崩溃。

AI Predicted 5.5 Difficulty: Easy EPSS 0.21% · P11

Possible ATT&CK Techniques 2 AI

T1059.004 · Unix Shell T1053.003 · Cron

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 121e6f3258fe393e22c36f61a319be8a4f2c05ae< c741485fa09bf5900f76d95424d86316d0a00331 affected
121e6f3258fe393e22c36f61a319be8a4f2c05ae< b86f98e53df4f5d57259817b8e9a00167b78bae6 affected
121e6f3258fe393e22c36f61a319be8a4f2c05ae< af71c2b88ccae44418e273bdfe0c96be8515151e affected
121e6f3258fe393e22c36f61a319be8a4f2c05ae< a1bca6b69bd934e2731d009e645038e05d57ce59 affected
121e6f3258fe393e22c36f61a319be8a4f2c05ae< bbd664b7c77f6488cd5652231c0fe01d069a73ea affected
121e6f3258fe393e22c36f61a319be8a4f2c05ae< 55a44f5259e6a5f1d5b11cb0e19e943c9cc62280 affected
121e6f3258fe393e22c36f61a319be8a4f2c05ae< c55dd3b46c1208d6d2ea737a8aefef4aa4c70cb8 affected
5.13 affected
… +8 more rows
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I. Basic Information for CVE-2026-74327

Vulnerability Information
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Vulnerability Title
vmalloc: fix NULL pointer dereference in is_vm_area_hugepages()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: vmalloc: fix NULL pointer dereference in is_vm_area_hugepages() find_vm_area() can return NULL if the given address is not a valid vmalloc area. Check the return value before dereferencing it to avoid a kernel crash.
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is_vm_area_hugepages()函数中未检查find_vm_area()的返回值，可能导致空指针取消引用，引发内核崩溃。
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 121e6f3258fe393e22c36f61a319be8a4f2c05ae ~ c741485fa09bf5900f76d95424d86316d0a00331 -
Linux Linux 5.13 -

II. Public POCs for CVE-2026-74327

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III. Intelligence Information for CVE-2026-74327

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Patches & Fixes for CVE-2026-74327 (6)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
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-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72319 9.8 CRITICAL ipvs: ensure inner headers in ICMP errors are in headroom
CVE-2026-72220 9.8 CRITICAL sunrpc: harden rq_procinfo lifecycle to prevent double-free
CVE-2026-72217 9.8 CRITICAL SUNRPC: Bound-check xdr_buf_to_bvec() stores before writing
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-74268 9.8 CRITICAL tcp: clear sock_ops cb flags before force-closing a child socket
CVE-2026-72207 9.8 CRITICAL ntfs: not change 0-byte $DATA attribute to non-resident
CVE-2026-74267 9.8 CRITICAL net/sched: sch_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring q

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74327

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