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CVE-2023-52444— f2fs: fix to avoid dirent corruption

EPSS 0.01% · P1
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I. Basic Information for CVE-2023-52444

Vulnerability Information
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Vulnerability Title
f2fs: fix to avoid dirent corruption
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid dirent corruption As Al reported in link[1]: f2fs_rename() ... if (old_dir != new_dir && !whiteout) f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); else f2fs_put_page(old_dir_page, 0); You want correct inumber in the ".." link. And cross-directory rename does move the source to new parent, even if you'd been asked to leave a whiteout in the old place. [1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/ With below testcase, it may cause dirent corruption, due to it missed to call f2fs_set_link() to update ".." link to new directory. - mkdir -p dir/foo - renameat2 -w dir/foo bar [ASSERT] (__chk_dots_dentries:1421) --> Bad inode number[0x4] for '..', parent parent ino is [0x3] [FSCK] other corrupted bugs [Fail]
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，该漏洞源于跨目录重命名会将源移动到新的父级。
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 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 ~ 02160112e6d45c2610b049df6eb693d7a2e57b46 -
LinuxLinux 4.2 -

II. Public POCs for CVE-2023-52444

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III. Intelligence Information for CVE-2023-52444

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Same Patch Batch · Linux · 2024-02-22 · 17 CVEs total

CVE-2024-26592ksmbd: fix UAF issue in ksmbd_tcp_new_connection()
CVE-2024-26591bpf: Fix re-attachment branch in bpf_tracing_prog_attach
CVE-2023-52452bpf: Fix accesses to uninit stack slots
CVE-2023-52451powerpc/pseries/memhp: Fix access beyond end of drmem array
CVE-2023-52450perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()
CVE-2023-52449mtd: Fix gluebi NULL pointer dereference caused by ftl notifier
CVE-2023-52448gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
CVE-2023-52447bpf: Defer the free of inner map when necessary
CVE-2023-52446bpf: Fix a race condition between btf_put() and map_free()
CVE-2023-52445media: pvrusb2: fix use after free on context disconnection
CVE-2024-26589bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
CVE-2024-26590erofs: fix inconsistent per-file compression format
CVE-2024-26588LoongArch: BPF: Prevent out-of-bounds memory access
CVE-2024-26586mlxsw: spectrum_acl_tcam: Fix stack corruption
CVE-2024-26587net: netdevsim: don't try to destroy PHC on VFs
CVE-2023-52443apparmor: avoid crash when parsed profile name is empty

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52444

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