CVE-2023-52449

Updated: 2024-03-19 04:57:36.406477

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x MEDIUM 5.5

Status

OS name Project name Version Score Severity Status Errata Last updated
AlmaLinux 9.2 ESU kernel 5.14.0 5.5 MEDIUM Released CLSA-2024:1712263970 2024-04-07 09:53:59
AlmaLinux 9.2 FIPS kernel 5.14.0 5.5 MEDIUM Released CLSA-2024:1712570434 2024-04-08 10:41:20
CentOS 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2024-03-19 09:54:51
CentOS 7 ELS kernel 3.10.0 5.5 MEDIUM Ignored 2024-03-19 09:54:48
CentOS 8.4 ELS kernel 4.18.0 5.5 MEDIUM Released CLSA-2024:1711026398 2024-03-21 09:52:16
CentOS 8.5 ELS kernel 4.18.0 5.5 MEDIUM Released CLSA-2024:1711026811 2024-03-21 09:52:17
CloudLinux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2024-03-19 09:54:51
Oracle Linux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2024-03-19 09:54:48
Ubuntu 16.04 ELS linux 4.4.0 5.5 MEDIUM Released CLSA-2024:1710945589 2024-03-20 11:09:15
Ubuntu 16.04 ELS linux-hwe 4.15.0 5.5 MEDIUM Released CLSA-2024:1710946064 2024-03-20 11:09:18
Total: 11