Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: fixed to avoid dirent corruption As Al reported in link 1: f2fsrename … if olddir != newdir && !whiteout f2fssetlinkoldinode, olddirentry, olddirpage, newdir; else f2fsputpageolddirpage, 0; You need the correct inumber i...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fixed the issue to cover normal cluster writes using cprwsem. When we overwrite a compressed cluster with a normal cluster, we should not unlock cprwsem during f2fswriterawpages. Otherwise, data will be corrupted ...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: f2fs: fixed the issue of tagging the “gcing” flag on the page during block migration. It is necessary to add the missing “gcing” flag on the page during block migration, in order to ensure that the migrated data is persisted duri...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: f2fs: Fix to correctly check the readonly condition. In the following case, it is possible to mount a multi-device image with the rw option. However, if one of the secondary devices is set as ro, subsequent updates will cause a...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: Fixed the issue where f2fswaitonpagewriteback was called in f2fswriterawpages. A BUG will be triggered when writing files concurrently, because the same page may be written back multiple times. The bug occurs at...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: f2fs: A fix was made to avoid a memory leak in f2fsrename. syzbot reported the following bug: BUG: Memory leak. Unreferenced object: 0xffff888127f70830 size 16: Command: “syz.0.23”, PID 6144, jiffies 4294943712 Hex dump first 16...

SUSE 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

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...

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 f2fssanitychecknodefooter function in the f2fs file system. This function accesses...

PT-2026-39000

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the f2fs file system where the f2fs finish read bio function may access uninitialized data in a folio if the system fails to read data from the device into that folio...

Linux Distros Unpatched Vulnerability : CVE-2026-43349

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid uninit-value access in f2fssanitychecknodefooter syzbot reported a f2fs b...

SUSE CVE-2026-31702

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix use-after-free of sbi in f2fscompresswriteendio In f2fscompresswriteendio, decpagecountsbi, type can bring the F2FSWBCPDATA counter to zero, unblocking f2fswaitonallpages in f2fsputsuper on a concurrent unmount CPU. The...

SUSE CVE-2026-31714

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid memory leak in f2fsrename syzbot reported a f2fs bug as below: BUG: memory leak unreferenced object 0xffff888127f70830 size 16: comm "syz.0.23", pid 6144, jiffies 4294943712 hex dump first 16 bytes: 3c af 57 72...

SUSE CVE-2026-31715

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF caused by decrementing sbi-nrpages in f2fswriteendio The xfstests case "generic/107" and syzbot have both reported a NULL pointer dereference. The concurrent scenario that triggers the panic is as follows:...

Linux Distros Unpatched Vulnerability : CVE-2026-31715

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - f2fs: fix UAF caused by decrementing sbi-nrpages in f2fswriteendio The xfstests case generic/107 and syzbot have both reported a NULL pointer dereference. The...

Linux Distros Unpatched Vulnerability : CVE-2026-31702

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - f2fs: fix use-after-free of sbi in f2fscompresswriteendio In f2fscompresswriteendio, decpagecountsbi, type can bring the F2FSWBCPDATA counter to zero, unblockin...

CVE-2026-31714

A flaw was found in the Linux kernel's F2FS Flash-Friendly File System component. This vulnerability, a memory leak, occurs within the f2fsrename function. A local attacker could exploit this by repeatedly performing file rename operations, leading to a gradual consumption of system memory. Over...

CVE-2026-31702

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix use-after-free of sbi in f2fscompresswriteendio In f2fscompresswriteendio, decpagecountsbi, type can bring the F2FSWBCPDATA counter to zero, unblocking f2fswaitonallpages in f2fsputsuper on a concurrent unmount CPU. The...

CVE-2026-31715 f2fs: fix UAF caused by decrementing sbi->nr_pages[] in f2fs_write_end_io()

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF caused by decrementing sbi-nrpages in f2fswriteendio The xfstests case "generic/107" and syzbot have both reported a NULL pointer dereference. The concurrent scenario that triggers the panic is as follows:...