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CVE-2024-41055— mm: prevent derefencing NULL ptr in pfn_section_valid()

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，该漏洞源于在使用READ_ONCE函数宏后未检查其值，导致可能的空指针取消引用。

AI Predicted 5.5 Difficulty: Hard EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 90ad17575d26874287271127d43ef3c2af876cea< 0100aeb8a12d51950418e685f879cc80cb8e5982 affected
b448de2459b6d62a53892487ab18b7d823ff0529< bc17f2377818dca643a74499c3f5333500c90503 affected
68ed9e33324021e9d6b798e9db00ca3093d2012a< 941e816185661bf2b44b488565d09444ae316509 affected
70064241f2229f7ba7b9599a98f68d9142e81a97< 797323d1cf92d09b7a017cfec576d9babf99cde7 affected
5ec8e8ea8b7783fab150cf86404fc38cb4db8800< adccdf702b4ea913ded5ff512239e382d7473b63 affected
5ec8e8ea8b7783fab150cf86404fc38cb4db8800< 82f0b6f041fad768c28b4ad05a683065412c226e affected
3a01daace71b521563c38bbbf874e14c3e58adb7 affected
5.10.210< 5.10.222 affected
… +12 more rows
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I. Basic Information for CVE-2024-41055

Vulnerability Information
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Vulnerability Title
mm: prevent derefencing NULL ptr in pfn_section_valid()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.
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，该漏洞源于在使用READ_ONCE函数宏后未检查其值，导致可能的空指针取消引用。
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 90ad17575d26874287271127d43ef3c2af876cea ~ 0100aeb8a12d51950418e685f879cc80cb8e5982 -
Linux Linux 6.8 -

II. Public POCs for CVE-2024-41055

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III. Intelligence Information for CVE-2024-41055

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Other References for CVE-2024-41055 (6)

Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
CVE-2024-41081 9.8 CRITICAL ila: block BH in ila_output()
CVE-2024-41073 9.8 CRITICAL nvme: avoid double free special payload
CVE-2024-41091 8.8 HIGH tun: add missing verification for short frame
CVE-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
CVE-2024-42083 8.8 HIGH ionic: fix kernel panic due to multi-buffer handling
CVE-2024-41062 8.8 HIGH bluetooth/l2cap: sync sock recv cb and release
CVE-2024-41045 7.8 HIGH bpf: Defer work in bpf_timer_cancel_and_free
CVE-2024-41096 7.8 HIGH PCI/MSI: Fix UAF in msi_capability_init
CVE-2024-41049 7.8 HIGH filelock: fix potential use-after-free in posix_lock_inode
CVE-2024-41051 7.8 HIGH cachefiles: wait for ondemand_object_worker to finish when dropping object
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41060 7.8 HIGH drm/radeon: check bo_va->bo is non-NULL before using it
CVE-2024-41059 7.8 HIGH hfsplus: fix uninit-value in copy_name
CVE-2024-41064 7.8 HIGH powerpc/eeh: avoid possible crash when edev->pdev changes
CVE-2024-42075 7.8 HIGH bpf: Fix remap of arena.
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-42064 7.8 HIGH drm/amd/display: Skip pipe if the pipe idx not set properly
CVE-2024-41086 7.8 HIGH bcachefs: Fix sb_field_downgrade validation

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-41055

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