spyre

Spyre ...a simple, self-contained modular host-based IOC scanner Spyre is a simple host-based IOC scanner built around the YARA pattern matching engine and other scan modules. The main goal of this project is easy operationalization of YARA rules and other indicators of compromise. Users need to...

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 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 – 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, Linux

In the Linux kernel, the following vulnerability has been resolved: ntfs: Check overflow when iterating ATTRRECORDs The kernel iterates over ATTRRECORDS in mft records in ntfsattrfind. Since ATTRRECORDS are adjacent to each other, the kernel can access the next ATTRRECORD from the end address of...

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:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fix for the iteration of extrefs during log replay. When calling inodeaddref and processing extrefs, if we jump to the next label, the value of victimname.len is undefined. This occurs because victimname.len wasn’t...

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 in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm, thp: Bail out early for writeback pages in collapsefile Currently, collapsefile does not explicitly check PGwriteback. Instead, pagehasprivate and trytoreleasepage are used to filter writeback pages. This approach does not wo...

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

In the Linux kernel, the following vulnerabilities have been resolved: jfs: Fixed a UAF in dbFreeBits Reported by syzbot ERROR: KASAN: Use of a slab object after free in mutexlockcommon, kernel/locking/mutex.c:587 inline ERROR: KASAN: Use of a slab object after free in mutexlock+0xfe/0xd70,...

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...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for a possible UAF Use-after-Write when remounting a read-only mmp-protected file system. After committing the change 618f003199c6 “ext4: Fix memory leak in ext4fillsuper”, there is a race condition where the kmmpd thre...

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 – 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 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 in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: jfs: jfsdmap: Validates dbl2nbperpage during mounting In jfsdmap.c, on line 381, BLKTODMAP is used to obtain a logical block number within dbFree. dbl2nbperpage, which represents the log2 of the number of blocks per page, is pass...

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 in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfs: Only call foliostartfscache once for each folio. If a network filesystem using netfs implements a clamplength function, it can set subrequest lengths that are smaller than the page size. When we loop through the folios in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: Allow ext4getgroupinfo to fail. Previously, ext4getgroupinfo would treat an invalid group number as a BUG, since this should theoretically never happen. However, if a malicious attacker modifies the superblock via the block...

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. An 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...