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

In the Linux kernel, the following vulnerability has been resolved: jfs: fixed an array-index-out-of-bounds issue in dbAdjTree. Currently, there is a missing bounds check when accessing the dmtstree within dbAdjTree. To address this issue, a boolean variable named “isctl” was added. This variable...

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

In the Linux kernel, the following vulnerabilities have been resolved: jfs: Prevent copying of nlink with a value of 0 from the disk inode. syzbot reported a deadlock in diFree. 1 When calling “ioctl$LOOPSETSTATUS64”, the offset value passed in is 4, which does not match the mounted loop device...

Astra Linux – Vulnerability in ntfs-3g

A properly crafted NTFS image can lead to a out-of-bounds access vulnerability, caused by an unsanitized attribute length in ntfs inodelookupbyname, in NTFS-3G 2021.8.22...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fixed races between xattrset|get and listxattr operations. Some issues may occur when performing concurrent xattrset|get and listxattr operations, such as assertion failures, memory corruption, and stale xattr values1. Thi...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: nfsd: Fixed the handling of cached open files in the nfsd4open code path. The commit fb70bf124b05 “NFSD: Instantiate a struct file when creating a regular NFSv4 file” added the ability to cache an open file descriptor across...

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: ocfs2: Free inode when ocfs2getinitinode fails The syzbot is reporting busy inodes after unmount, for commit 9c89fe0af826. “ocfs2: Handle error from dquotinitialize” forgot to call iput when newinode succeeded and dquotinitialize...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed incorrect splitting in btrfsdropextentmaprange. In production, we encountered various WARNON messages in the extentmap code, specifically in btrfsdropextentmaprange, when we had to call addextentmapping for our secon...

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: NFSv4.2: fixed the NFSv4.2 kernel bug at mm/usercopy.c:102 Calling listxattr with a buffer size of 0 returns the actual size of the buffer required for a subsequent call. When size 0, nfs4listxattr does not return an error becaus...

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

In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents. When merging very long extents, we try to assign as much length as possible to the first extent. However, this is unnecessarily complicated and not really worth the effort. Moreover,...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: lockd: Other missing fields are set when unlocking files. The vfslockfile function expects that the struct filelock structure is fully initialized by the caller. If the flfile field is NULL after re-exporting NFSv3, an OOP err...

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

In the Linux kernel, the following vulnerability has been resolved: f2fs: FMODEWRITE is required for atomic write IOctls. The F2FS IOctls for starting and committing atomic writes check for inodeownerorcapable, but this does not provide opportunities for LSMs like SELinux or Landlock to deny writ...

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

In the Linux kernel, the following vulnerability has been resolved: f2fs: The issue was fixed by dropping all dirty pages during umount if cperror is set. The xfstest generic/361 report indicates a bug as follows: f2fsbugonsbi, sbi-fsyncnodenum; Kernel bug located at fs/f2fs/super.c:1627! RIP:...

Astra Linux – Vulnerability in Linux

The fs/nfs/nfs4client.c file in the Linux kernel before version 5.13.4 has an incorrect connection-setup ordering. This allows operators of remote NFSv4 servers to cause a denial of service termination of services, by arranging for those servers to become unreachable during trunking detection...

Astra Linux – Vulnerability in Linux

A memory-bound write flaw 1 or 2 bytes of memory was identified in the Linux kernel’s NFS subsystem, related to the way users use mirroring replication of files via NFS. A user with access to the NFS mount could potentially exploit this flaw to crash the system or escalate privileges on the syste...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: cifs: Prevent NULL dereferencing in cifscomposemountoptions. The optional @ref parameter may contain a NULL nodename. Therefore, prevent dereferencing it in cifscomposemountoptions. Address-Coverity: 1476408 „Explicit NULL...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: NFS: Fixed an oopsable condition in nfspageioaddrequest. Ensured that nfspageioerrorcleanup resets the mirror array contents, so that the structure reflects the fact that it is now empty. Also changed the test in...

Astra Linux – Vulnerability in ntfs-3g

A properly crafted NTFS image can lead to a out-of-bounds read in ntfsrunlistsmergei in NTFS-3G 2021.8.22...

Astra Linux – Vulnerability in ntfs-3g

A properly crafted NTFS image can lead to out-of-bounds reads in ntfsattrfind and ntfsexternalattrfind in NTFS-3G 2021.8.22...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: NFS: Do not corrupt the value of pgbyteswritten in nfsdorecoalesce The value of mirror-pgbyteswritten should only be updated after a successful attempt to flush out the requests on the list...

Astra Linux – Vulnerability in grub2

A out-of-bounds read flaw was discovered in Grub2’s NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack can result in sensitive data cached in memory or EFI variabl...