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CVE-2023-54021— ext4: set goal start correctly in ext4_mb_normalize_request

AI Predicted 5.5 Difficulty: Moderate EPSS 0.05% · P15

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxc9de560ded61faa5b754137b7753da252391c55a< 2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530affected
c9de560ded61faa5b754137b7753da252391c55a< 390eee955d4de4662db5e3e9e9a9eae020432cb7affected
c9de560ded61faa5b754137b7753da252391c55a< cee78217a7ae72d11c2e21e1a5263b8044489823affected
c9de560ded61faa5b754137b7753da252391c55a< 3ca3005b502ca8ea87d6a344323b179b48c4e4a3affected
c9de560ded61faa5b754137b7753da252391c55a< bc4a3e1d07a86ae5845321d371190244acacb2f2affected
c9de560ded61faa5b754137b7753da252391c55a< c6bee8970075b256fc1b07bf4873049219380818affected
c9de560ded61faa5b754137b7753da252391c55a< abb330ffaa3a0ae7ce632e28c9260b461c01f19faffected
c9de560ded61faa5b754137b7753da252391c55a< b07ffe6927c75d99af534d685282ea188d9f71a6affected
… +10 more rows
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I. Basic Information for CVE-2023-54021

Vulnerability Information
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Vulnerability Title
ext4: set goal start correctly in ext4_mb_normalize_request
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: set goal start correctly in ext4_mb_normalize_request We need to set ac_g_ex to notify the goal start used in ext4_mb_find_by_goal. Set ac_g_ex instead of ac_f_ex in ext4_mb_normalize_request. Besides we should assure goal start is in range [first_data_block, blocks_count) as ext4_mb_initialize_context does. [ Added a check to make sure size is less than ar->pright; otherwise we could end up passing an underflowed value of ar->pright - size to ext4_get_group_no_and_offset(), which will trigger a BUG_ON later on. - TYT ]
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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ext4文件系统未正确设置目标起始块，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

VendorProductAffected VersionsCPESubscribe
LinuxLinux c9de560ded61faa5b754137b7753da252391c55a ~ 2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530 -
LinuxLinux 2.6.25 -

II. Public POCs for CVE-2023-54021

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III. Intelligence Information for CVE-2023-54021

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Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54021

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