CVE-2024-49957

MEDIUM Year: 2024
CVSS v3 Score
5.5
Medium
Weakness Type
CWE-476
View all →

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix null-ptr-deref when journal load failed. During the mounting process, if journal_reset() fails because of too short journal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer. Subsequently, ocfs2_journal_shutdown() calls jbd2_journal_flush()->jbd2_cleanup_journal_tail()-> __jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail() ->lock_buffer(journal->j_sb_buffer), resulting in a null-pointer dereference error. To resolve this issue, we should check the JBD2_LOADED flag to ensure the journal was properly loaded. Additionally, use journal instead of osb->journal directly to simplify the code.

Related Vulnerabilities

CVE-2001-1559

MEDIUM
CVSS:5.5(Medium)

The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial ...

CWE-4762001

CVE-2010-0206

MEDIUM
CVSS:5.5(Medium)

xpdf allows remote attackers to cause a denial of service (NULL pointer dereference and crash) in the way it processes JBIG2 PDF stream objects.

CWE-4762010

CVE-2010-3079

MEDIUM
CVSS:5.5(Medium)

kernel/trace/ftrace.c in the Linux kernel before 2.6.35.5, when debugfs is enabled, does not properly handle interaction between mutex possession and llseek operations, which allows local users to cau...

CWE-4762010

CVE-2011-3637

MEDIUM
CVSS:5.5(Medium)

The m_stop function in fs/proc/task_mmu.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (OOPS) via vectors that trigger an m_start error.

CWE-4762011

CVE-2011-4081

MEDIUM
CVSS:5.5(Medium)

crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a fail...

CWE-4762011

CVE-2011-4594

MEDIUM
CVSS:5.5(Medium)

The __sys_sendmsg function in net/socket.c in the Linux kernel before 3.1 allows local users to cause a denial of service (system crash) via crafted use of the sendmmsg system call, leading to an inco...

CWE-4762011