CVE-2026-63816

A flaw was found in the f2fs Flash-Friendly File System component of the Linux kernel. This use-after-free UAF vulnerability occurs during garbage collection operations when handling Copy-On-Write COW files. A local attacker could exploit this by triggering garbage collection, leading to a...

CVE-2026-63814

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

EUVD-2026-45484

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fsrecoverorphaninodes trusts the orphan block entrycount when replaying orphan inodes from the checkpoint pack. A corrupted entrycount larger than F2FSORPHANSPERBLOCK makes the recovery...

CVE-2026-63819 f2fs: fix to do sanity check on f2fs_get_node_folio_ra()

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on f2fsgetnodefoliora kernel BUG at fs/f2fs/file.c:845! Oops: invalid opcode: 0000 1 SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller 0 PREEMPTfull Hardware name: QEMU...

CVE-2026-63813 Revert "f2fs: remove non-uptodate folio from the page cache in move_data_block"

In the Linux kernel, the following vulnerability has been resolved: Revert "f2fs: remove non-uptodate folio from the page cache in movedatablock" This reverts commit 9609dd704725a40cd63d915f2ab6c44248a44598. The kernel panics are keeping to be reported especially when the f2fs partition get almos...

EUVD-2026-45478

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix incorrect FINOEXTENT handling in destroyextentnode When destroyextentnode sets the inode flag FINOEXTENT, it does not reset the length of the largest extent to 0 and update the inode folio. Since modifications to the...

PT-2026-61135

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the F2FS file system where a missing sanity check in the f2fs get node folio ra function can lead to a system panic. In cases involving a corrupted inode, a direct nod...

The vulnerability of the f2fs_rename() function in the fs/f2fs/namei.c file of the F2FS file system in the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the f2fsrename function in the fs/f2fs/namei.c file of the F2FS file system in the Linux operating system is related to state management errors. Exploiting this vulnerability could allow an attacker to cause a service failure...

DEBIAN-CVE-2026-53303

In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extensionlist reading with sblock in f2fssbishow In f2fssbishow, the extensionlist, extensioncount and hotextcount are read without holding sbi-sblock. If a concurrent sysfs store modifies the extension list via...

PT-2026-52942

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the f2fs module, the f2fs sbi show function reads extension list, extension count, and hot ext count without holding the sb lock. If a concurrent sysfs store operation modifies the...

CVE-2026-53017

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix data loss caused by incorrect use of natentry flag Data loss can occur when fsync is performed on a newly created file before any checkpoint has been written concurrently with a checkpoint operation. The scenario is as...

Linux Distros Unpatched Vulnerability : CVE-2026-46194

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - f2fs: fix nodecnt race between extent node destroy and writeback f2fsdestroyextentnode does not set FINOEXTENT before clearing extent nodes. When called from...

CVE-2026-46175

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix fsck inconsistency caused by FGGC of node block During FGGC node block migration, fsck may incorrectly treat the migrated node block as fsync-written data. The reproduction scenario: root@vm:/mnt/f2fs seq 1 2048 | xargs...

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 the nodecnt competition between the destruction and write-back operations of extent nodes in f2fs...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: We can avoid a panic if the extenttree is not created. This patch prevents the following panics: pc: lookupextenttree+0xd8/0x760 lr: f2fsdowritedatapage+0x104/0x87c sp: ffffffc010cbb3c0 x29: ffffffc010cbb3e0 x28:...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: f2fs: A fix was made to prevent race conditions during the fsyncentryslab access by multiple f2fs filesystem instances. As reported by syzbot, there is a use-after-free issue during f2fs recovery: A use-after-free occurs when...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: f2fs: The issue of dereferencing a stale list iterator after the loop body has been executed has been fixed. The list iterator variable will become a bogus pointer if no break statement is executed. Dereferencing it in this case,...

CVE-2026-43349

A flaw was found in the Linux kernel's Flash-Friendly File System f2fs. This vulnerability allows a local attacker to cause an uninitialized value access in the f2fssanitychecknodefooter function. This occurs when the system fails to read data from a device into a folio, potentially leading to...

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...