Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: The abort logic in btrfsreplacefileextents has been fixed. Error injection testing uncovered a case where a corrupt file system could occur, with an missing extent in the middle of a file. This occurs because the if...

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 found in Linux 6.1, Linux 5.10, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: cifs: Fixed a UAF in cifsdemultiplexthread There is a UAF when performing xfstests on cifs: BUG: KASAN: Use-after-free in smb2isnetworknamedeleted+0x27/0x160 Reading a size 4 value at address ffff88810103fc08 by task cifsd/923...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Clearing the extent cache after moving/defragmenting extents The extent map cache can become stale when extents are moved or defragmented, causing subsequent operations to see outdated extent flags. This triggers a BUGON i...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: cifs: A use-after-free bug has been fixed in refreshcacheworker. The UAF bug occurred because we were putting DFS root sessions into cifsumount while the DFS cache refresher was executing. We have ensured that DFS root session...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: fs/proc: taskmmu.c: Do not read mapcount for migration entries The syzbot reported the following bug: Kernel bug at include/linux/page-flags.h: 785 Invalid opcode: 0000 1 PREEMPT SMP KASAN CPU: 1; PID: 4392; Comm: syz-executor560...

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

In the Linux kernel, the following vulnerabilities have been resolved: fs/jfs: Added validation for dbmaxag and dbagpref. Both dbmaxag and dbagpref are used as indexes for the dbagfree array. However, there is currently no validation for these values, which can lead to errors. The following is a...

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

In the Linux kernel, the following vulnerability has been resolved: jfs: Check whether leafidx is greater than the number of leaves per dmap tree. syzbot reported an out-of-bounds error in dbSplit. This occurs when dmtleafidx is greater than the number of leaves per dmap tree. A check for...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fat: Fix for uninitialized fields in nostale filehandles When the function fatencodefhnostale encodes a file handle without a parent handle, it only stores the first 10 bytes of the file handle. However, the length of the file...

Astra Linux – Vulnerability in Linux 5.15

A issue was discovered in the Linux kernel before version 6.2. The ntfs3 subsystem does not properly check for correctness during disk reads, resulting in an out-of-bounds read in the ntfssetea function in fs/ntfs3/xattr.c...

Astra Linux – Vulnerability in Chromium

Insufficient data validation in the File System API of Google Chrome prior to version 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions through a crafted HTML page...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: NFSD: NFSv4 file creation neglects setting the ACL. A NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL later. It finds that the ACL is only a default ACL based on the mode bits, not the...

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

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Fixed a slab-use-after-free issue caused by a dangling pointer dqipriv. When mounting ocfs2 and then remounting it as read-only, a slab-use-after-free occurs after the user uses the syscall to call ocfs2getnextid...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: jfs: Truncating of good inode pages occurs when the hard link is 0. The value of the fileset for the inode copy from the disk by the reproducer is AGGRRESERVEDI. When evicting, its hard link number is 0, so its inode pages are no...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: cifs: The xid leak in cifscopyfilerange has been fixed. If the file is used by swap, before returning -EOPNOTSUPP, the xid should be freed. Otherwise, the xid will be leaked...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: NFSv4.0: A use-after-free issue was fixed in the asynchronous open function. Yang Erkun reported that when two threads open files at the same time and are forced to abort before a response is received, the call to nfsreleaseseqid...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fixed a race condition related to waking up the NFSLAYOUTDRAIN task. We identified several systems where tasks were stuck in a writeback state, waiting for the same page lock. Additionally, one task was waiting for th...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: f2fs: a fix was made to avoid a Use-After-Free issue in f2fswriteendio. According to syzbot, a use-after-free issue occurred in f2fswriteendio. This issue is caused by the following race condition: Loop device Unmount Worker...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: compress: fixed to avoid a use-after-free condition on dic. Call trace: memcpy+0x128/0x250 f2fsreadmultipages+0x940/0xf7c f2fsmpagereadpages+0x5a8/0x624 f2fsreadahead+0x5c/0x110 pagecacheraunbounded+0x1b8/0x590...

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

In the Linux kernel, the following vulnerability has been resolved: exfat: A memory leak has been fixed in exfatloadbitmap. If the first directory entry in the root directory is not a bitmap directory entry, the variable ‘bh’ will not be released and reassigned, which will cause a memory leak...