UBUNTU-CVE-2026-43349

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid uninit-value access in f2fssanitychecknodefooter syzbot reported a f2fs bug as below: BUG: KMSAN: uninit-value in f2fssanitychecknodefooter+0x374/0xa20 fs/f2fs/node.c:1520 f2fssanitychecknodefooter+0x374/0xa20...

CVE-2026-43349 f2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid uninit-value access in f2fssanitychecknodefooter syzbot reported a f2fs bug as below: BUG: KMSAN: uninit-value in f2fssanitychecknodefooter+0x374/0xa20 fs/f2fs/node.c:1520 f2fssanitychecknodefooter+0x374/0xa20...

CVE-2026-31715

A flaw was found in the Linux kernel's Flash-Friendly File System f2fs. A use-after-free vulnerability exists due to incorrect handling of page counts during concurrent write operations and unmounting. This can lead to a NULL pointer dereference, causing the system to panic and resulting in a...

CVE-2026-23265

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in read,writeendio ----------- cut here ------------ kernel BUG at fs/f2fs/data.c:358! Call Trace: blkupdaterequest+0x5eb/0xe70 block/blk-mq.c:987 blkmqendrequest+0x3e/0x70...

The vulnerability of the f2fs_free_dic() function in the fs/f2fs/compress.c module of the F2FS file system in the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the f2fsfreedic function in the fs/f2fs/compress.c module of the F2FS file system in the Linux operating system is related to the reutilization of previously freed memory. Exploiting this vulnerability can allow an attacker to cause a service failure...

EUVD-2026-9404

In the Linux kernel, the following vulnerability has been resolved: Revert "f2fs: block cache/dio write during f2fsenablecheckpoint" This reverts commit 196c81fdd438f7ac429d5639090a9816abb9760a. Original patch may cause below deadlock, revert it. write remount - writebegin - lockpage --- lock A -...

CVE-2026-23233

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid mapping wrong physical block for swapfile Xiaolong Guo reported a f2fs bug in bugzilla 1 1 https://bugzilla.kernel.org/showbug.cgi?id=220951 Quoted: "When using stress-ng's swap stress test on F2FS filesystem...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from a deadlock issue in the f2fsenablecheckpoint function...

ROS-20260220-73-0008

A vulnerability in the totalvalidblockcount function of the fs/f2fs/f2fs.h library of the Linux kernel is related to insufficient input validation. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

ROS-20260126-73-0036

A vulnerability in the f2fs component of the Linux operating system kernel is related to unchecked array indexing. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001103)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001103 advisory. The sanitycheckckpt function in fs/f2fs/super.c in the Linux kernel before 4.12.4 does not validate the blkoff and segno arrays, which allows local users to gain...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004056)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004056 advisory. In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause a NULL pointer dereference in f2fsrecoverfsyncdata in fs/f2fs/recovery.c. This is...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002603)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002603 advisory. The sanitycheckrawsuper function in fs/f2fs/super.c in the Linux kernel before 4.11.1 does not validate the segment count, which allows local users to gain privilege...

CVE-2025-68772

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid updating compression context during writeback Bai, Shuangpeng reported a bug as below: Oops: divide error: 0000 1 SMP KASAN PTI CPU: 0 UID: 0 PID: 11441 Comm: syz.0.46 Not tainted 6.17.0 1 PREEMPTfull Hardware...

SUSE CVE-2023-54192

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null pointer panic in tracepoint in replaceatomicwriteblock We got a kernel panic if oldaddr is NULL. https://bugzilla.kernel.org/showbug.cgi?id=217266 BUG: kernel NULL pointer dereference, address: 0000000000000000 Cal...

CVE-2023-54182

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to check readonly condition correctly With below case, it can mount multi-device image w/ rw option, however one of secondary device is set as ro, later update will cause panic, so let's introduce f2fsdevisreadonly, and...

PT-2025-53119

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-rc4 Description The Linux kernel contains a flaw within the f2fs file system related to sanity checks on summary information. This issue can lead to a use-after-free condition, specifically triggered by...

EUVD-2023-60158

In the Linux kernel, the following vulnerability has been resolved: f2fs: synchronize atomic write aborts To fix a race condition between atomic write aborts, I use the inode lock and make COW inode to be re-usable thoroughout the whole atomic file inode lifetime...

DEBIAN-CVE-2023-53796

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix information leak in f2fsmoveinlinedirents When converting an inline directory to a regular one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory block. Fix this by...

PT-2025-49656

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix information leak in f2fs move inline dirents When converting an inline directory to a regular one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory block. Fix this by...