Astra Linux – Vulnerability in Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: selinux: Avoid dereferencing garbage after a mount failure. In the case where kernmount fails and returns an error pointer in the error branch instead of continuing and dereferencing the error pointer. Also, remove the “never rea...

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

In the Linux kernel, the following vulnerabilities have been resolved: ocfs2: A memory leak has been fixed in ocfs2mountvolume. There is a memory leak reported by kmemleak: - Unreferenced object: 0xffff88810cc65e60 size 32 Command: “mount.ocfs2”, PID: 23753, Jiffies: 4302528942 Age: 34735.105s He...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Fuse: Abort on fatal signal during sync init When sync init is used and the server exits for some reason e.g., error, crash, the filesystem creation will hang during the processing of FUSEINIT. The reason for this issue is that...

Astra Linux – Vulnerability in open-vm-tools

A issue was discovered in open-vm-tools 2009.03.18-154848. Local users can bypass the intended access restrictions on mounting shares through a symlink attack that exploits a realpath race condition in mount.vmhgfs also known as hgfsmounter...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/rxe: Fixed a NULLptrderef in rxeqpdocleanup, when socket creation fails. There is a NULLptrderef in the mount.cifs operation over RDMA: - BUG: KASAN: NULLptrderef in rxeqpdocleanup+0x2f3/0x360 rdmarxe - Reading of a 8-byt...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: fs/namespace: The reference leak in grabrequestedmntns has been fixed. lookupmntns already takes a reference to mntns. grabrequestedmntns does not need to take an additional reference...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: A leak of userns and mntidmap occurs in opentreeattr2. Once the wantmountsetattr function returns a positive value, it still requires finishmountkattr to release -mntuserns. If domountsetattr fails, it does not change this...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not allow journal inode to have the encrypt flag Mounting a filesystem whose journal inode has the encrypt flag causes a NULL dereference in fscryptlimitioblocks when the ‘inlinecrypt’ mount option is used. The problem i...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: cifs: fixed handlecache and multiuser In multiuser mode, each individual user has its own tcon structure for the shared resource, and thus they have their own handle for the cached directory. When unmounting such a shared...

Astra Linux – Vulnerability in cifs-utils

It was discovered that cifs-utils’ mount.cifs function invoked a shell when requesting the Samba password, which could be exploited to inject arbitrary commands. An attacker who had special permissions, such as those through sudo rules, could use this vulnerability to escalate their privileges...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: jffs2: A use-after-free occurred in jffs2clearxattrsubsystem. When we mount a jffs2 image, it is assumed that the first few blocks of the image are normal and contain at least one xattr-related inode. However, the next block may ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Landlock: Fixed the handling of disconnected directories. Disconnected files or directories may appear when they are visible and opened from a bind mount, but have been renamed or moved from the source of the bind mount in a w...

Astra Linux – Vulnerability in cifs-utils

In cifs-utils up to version 6.14, a stack-based buffer overflow occurs when parsing the mount.cifs ip= command-line argument. This vulnerability could allow local attackers to gain root privileges...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: erofs: Wake up all waiters after zerofslzmahead is ready When the user mounts erofs a second time, the decompression thread may become hung. The issue occurs due to a sequence of steps like the following: 1 Task A calls...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: jffs2: fixed a memory leak in jffs2domountfs. If jffs2buildfilesystem in jffs2domountfs returns an error, we can observe the following kmemleak report: -------------------------------------------- unreferenced object...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed a memory leak in parseapplysbmountoptions If processing the disk-mounted options fails after any memory has been allocated in the ext4FS context, such as for sqfnames, then this memory is leaked. This issue was...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: hfs: Ensure that sb-sfsinfo is always cleaned up. When hfs was converted to the new mount API, a bug was introduced by changing the allocation pattern of sb-sfsinfo. If setupbdevsuper fails after a new superblock has been allocat...

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

In the Linux kernel, the following vulnerabilities have been resolved: Nilfs2: Fixed a hang issue in nilfslookupdirtydatabuffers. Syzbot reported a hang issue in migratepagesbatch, called by mbind, and nilfslookupdirtydatabuffers, called in the log writer of nilfs2. While migratepagesbatch locks ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tools/rtla: Fixed the Clang warning regarding the size of the mountpoint variable. Clang is reporting this warning as follows: $ make HOSTCC=clang CC=clang LLVMIAS=1 ... clang -O -g -DVERSION="6.8.0-rc3" -flto=auto -fexceptions...

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

In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount It is necessary to ensure that the value of the block size recorded in the superblock is valid. Otherwise, the shift operation used to calculate the block size may overflow, resulting ...