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CVE-2023-52449— mtd: Fix gluebi NULL pointer dereference caused by ftl notifier

AI Predicted 5.9 Difficulty: Moderate EPSS 0.24% · P15

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022affected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< 1bf4fe14e97cda621522eb2f28b0a4e87c5b0745affected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< 001a3f59d8c914ef8273461d4bf495df384cc5f8affected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< d8ac2537763b54d278b80b2b080e1652523c7d4caffected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< 5389407bba1eab1266c6d83e226fb0840cb98dd5affected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< cfd7c9d260dc0a3baaea05a122a19ab91e193c65affected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dcaffected
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba< a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6affected
… +10 more rows
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I. Basic Information for CVE-2023-52449

Vulnerability Information
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Vulnerability Title
mtd: Fix gluebi NULL pointer dereference caused by ftl notifier
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mtd: Fix gluebi NULL pointer dereference caused by ftl notifier If both ftl.ko and gluebi.ko are loaded, the notifier of ftl triggers NULL pointer dereference when trying to access ‘gluebi->desc’ in gluebi_read(). ubi_gluebi_init ubi_register_volume_notifier ubi_enumerate_volumes ubi_notify_all gluebi_notify nb->notifier_call() gluebi_create mtd_device_register mtd_device_parse_register add_mtd_device blktrans_notify_add not->add() ftl_add_mtd tr->add_mtd() scan_header mtd_read mtd_read_oob mtd_read_oob_std gluebi_read mtd->read() gluebi->desc - NULL Detailed reproduction information available at the Link [1], In the normal case, obtain gluebi->desc in the gluebi_get_device(), and access gluebi->desc in the gluebi_read(). However, gluebi_get_device() is not executed in advance in the ftl_add_mtd() process, which leads to NULL pointer dereference. The solution for the gluebi module is to run jffs2 on the UBI volume without considering working with ftl or mtdblock [2]. Therefore, this problem can be avoided by preventing gluebi from creating the mtdblock device after creating mtd partition of the type MTD_UBIVOLUME.
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NULL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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba ~ aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022 -
LinuxLinux 2.6.31 -

II. Public POCs for CVE-2023-52449

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III. Intelligence Information for CVE-2023-52449

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Mailing List Discussions for CVE-2023-52449 (2)

Other References for CVE-2023-52449 (8)

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-2023-52448gfs2: 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-2023-52444f2fs: fix to avoid dirent corruption
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-2023-52449

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