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CVE-2023-54062— ext4: fix invalid free tracking in ext4_xattr_move_to_block()

EPSS 0.06% · P20
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I. Basic Information for CVE-2023-54062

Vulnerability Information
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Vulnerability Title
ext4: fix invalid free tracking in ext4_xattr_move_to_block()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix invalid free tracking in ext4_xattr_move_to_block() In ext4_xattr_move_to_block(), the value of the extended attribute which we need to move to an external block may be allocated by kvmalloc() if the value is stored in an external inode. So at the end of the function the code tried to check if this was the case by testing entry->e_value_inum. However, at this point, the pointer to the xattr entry is no longer valid, because it was removed from the original location where it had been stored. So we could end up calling kvfree() on a pointer which was not allocated by kvmalloc(); or we could also potentially leak memory by not freeing the buffer when it should be freed. Fix this by storing whether it should be freed in a separate variable.
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，该漏洞源于无效的释放跟踪，可能导致内存泄漏或无效释放。
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 c7851208abffe5ae4deb01cf48763911dc14fc67 ~ 76887be2a96193cd11be818551b8934ecdb3123f -
LinuxLinux 6.3 -

II. Public POCs for CVE-2023-54062

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III. Intelligence Information for CVE-2023-54062

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Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54062

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