CVE-2023-52449

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Source
https://cve.org/CVERecord?id=CVE-2023-52449
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52449.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52449
Downstream
Related
Published
2024-02-22T16:21:40Z
Modified
2026-08-12T03:51:24Z
Summary
mtd: Fix gluebi NULL pointer dereference caused by ftl notifier
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52449.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba
Fixed
aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022
Fixed
1bf4fe14e97cda621522eb2f28b0a4e87c5b0745
Fixed
001a3f59d8c914ef8273461d4bf495df384cc5f8
Fixed
d8ac2537763b54d278b80b2b080e1652523c7d4c
Fixed
5389407bba1eab1266c6d83e226fb0840cb98dd5
Fixed
cfd7c9d260dc0a3baaea05a122a19ab91e193c65
Fixed
b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc
Fixed
a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52449.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.31
Fixed
4.19.306
Type
ECOSYSTEM
Events
Introduced
4.20.0
Fixed
5.4.268
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.209
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.148
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.75
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.14
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.7.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52449.json"