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CVE-2024-45022— mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mm/vmalloc组件存在页面映射问题。

CVSS 7.8 · High EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 11

VendorProduct Version RangeStatus
Linux Linux fe5c2bdcb14c8612eb5e7a09159801c7219e9ac4< fd1ffbb50ef4da5e1378a46616b6d7407dc795da affected
e9c3cda4d86e56bf7fe403729f38c4f0f65d3860< de7bad86345c43cd040ed43e20d9fad78a3ee59f affected
e9c3cda4d86e56bf7fe403729f38c4f0f65d3860< c91618816f4d21fc574d7577a37722adcd4075b2 affected
e9c3cda4d86e56bf7fe403729f38c4f0f65d3860< 61ebe5a747da649057c37be1c37eb934b4af79ca affected
6.1.95< 6.1.107 affected
6.3 affected
< 6.3 unaffected
6.1.107≤ 6.1.* unaffected
… +3 more rows
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I. Basic Information for CVE-2024-45022

Vulnerability Information
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Vulnerability Title
mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0 The __vmap_pages_range_noflush() assumes its argument pages** contains pages with the same page shift. However, since commit e9c3cda4d86e ("mm, vmalloc: fix high order __GFP_NOFAIL allocations"), if gfp_flags includes __GFP_NOFAIL with high order in vm_area_alloc_pages() and page allocation failed for high order, the pages** may contain two different page shifts (high order and order-0). This could lead __vmap_pages_range_noflush() to perform incorrect mappings, potentially resulting in memory corruption. Users might encounter this as follows (vmap_allow_huge = true, 2M is for PMD_SIZE): kvmalloc(2M, __GFP_NOFAIL|GFP_X) __vmalloc_node_range_noprof(vm_flags=VM_ALLOW_HUGE_VMAP) vm_area_alloc_pages(order=9) ---> order-9 allocation failed and fallback to order-0 vmap_pages_range() vmap_pages_range_noflush() __vmap_pages_range_noflush(page_shift = 21) ----> wrong mapping happens We can remove the fallback code because if a high-order allocation fails, __vmalloc_node_range_noprof() will retry with order-0. Therefore, it is unnecessary to fallback to order-0 here. Therefore, fix this by removing the fallback code.
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mm/vmalloc组件存在页面映射问题。
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 fe5c2bdcb14c8612eb5e7a09159801c7219e9ac4 ~ fd1ffbb50ef4da5e1378a46616b6d7407dc795da -
Linux Linux 6.3 -

II. Public POCs for CVE-2024-45022

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III. Intelligence Information for CVE-2024-45022

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Patches & Fixes for CVE-2024-45022 (4)

Same Patch Batch · Linux · 2024-09-11 · 23 CVEs total

CVE-2024-45030 9.8 CRITICAL igb: cope with large MAX_SKB_FRAGS
CVE-2024-45013 9.8 CRITICAL nvme: move stopping keep-alive into nvme_uninit_ctrl()
CVE-2024-45009 8.2 HIGH mptcp: pm: only decrement add_addr_accepted for MPJ req
CVE-2024-45019 7.8 HIGH net/mlx5e: Take state lock during tx timeout reporter
CVE-2024-45016 7.8 HIGH netem: fix return value if duplicate enqueue fails
CVE-2024-45017 7.8 HIGH net/mlx5: Fix IPsec RoCE MPV trace call
CVE-2024-45020 7.8 HIGH bpf: Fix a kernel verifier crash in stacksafe()
CVE-2024-45023 7.8 HIGH md/raid1: Fix data corruption for degraded array with slow disk
CVE-2024-45024 7.8 HIGH mm/hugetlb: fix hugetlb vs. core-mm PT locking
CVE-2024-45021 7.1 HIGH memcg_write_event_control(): fix a user-triggerable oops
CVE-2024-45026 7.0 HIGH s390/dasd: fix error recovery leading to data corruption on ESE devices
CVE-2024-46672 wifi: brcmfmac: cfg80211: Handle SSID based pmksa deletion
CVE-2024-45025 fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE
CVE-2024-45018 netfilter: flowtable: initialise extack before use
CVE-2024-45027 usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
CVE-2024-45014 s390/boot: Avoid possible physmem_info segment corruption
CVE-2024-45015 drm/msm/dpu: move dpu_encoder's connector assignment to atomic_enable()
CVE-2024-45012 nouveau/firmware: use dma non-coherent allocator
CVE-2024-45029 i2c: tegra: Do not mark ACPI devices as irq safe
CVE-2024-45011 char: xillybus: Check USB endpoints when probing device

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-45022

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