Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nullblk: Fixed a issue where a NULL pointer dereference occurred when configuring ‘power’ and ‘submitqueues’. Writing ‘power’ and ‘submitqueues’ concurrently would trigger a kernel panic. Test script: bash modprobe nullblk...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: cifs: Fixed a buffer overflow issue when parsing NFS reparse points. ReparseDataLength is the sum of the InodeType size and the DataBuffer size. To obtain the DataBuffer size, it is necessary to subtract the InodeType size fro...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Fix null-ptr-deref in blocktouchbuffer tracepoint The patch series “nilfs2: Fix null-ptr-deref bugs on block tracepoints” addresses these bugs that occur when using nilfs2 and two block-related tracepoints. This patch...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fixed OOB issues when building SMB2IOCTL requests. When encryption is used, whether enforced by the server or when using the “seal” mount option, the client will squash all compound request buffers into a single iov...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: f2fs: Assign CURSEGALLDATAATGC if blkaddr is valid mkdir /mnt/test/comp f2fsio.setflagscompression = /mnt/test/comp dd if=/dev/zero of=/mnt/test/comp/testfile bs=16k count=1 truncate --size 13 /mnt/test/comp/testfile In the above...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: brd: Automatic disk creation is deferred until module initialization succeeds. My colleague Wupeng identified the following issues during fault injection: BUG: Unable to handle page faults for address: fffffbfff809d073 PGD:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Set the object to close if ondemandid 0 in copen. If copen is called maliciously in user mode, it may delete the request corresponding to the random ID. Moreover, the request may not have been read yet...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Handling of inconsistent states in nilfsbtnodecreateblock. Syzbot reported that an inconsistency in the buffer state was detected in nilfsbtnodecreateblock, which triggered a kernel bug. It is not appropriate to consider...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix possible UAF for bfqq-bic with merge chain 1 initial state, three tasks: Process 1 Process 2 Process 3 BIC1 BIC2 BIC3 | Λ | Λ | Λ | | | | | | V | V | V | bfqq1 bfqq2 bfqq3 process ref: 1 1 1 2 bfqq1 merged to bfqq...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Firmware: csdsp: Returns an error if the block header exceeds the size of the remaining data in the file. If the block header is longer than the amount of data remaining in the file, csdsppowerup will return an error. The previou...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: blk-rq-qos: fixed a crash that occurred during the rqqoswait operation versus the rqqoswakefunction race. We are encountering crashes due to rqqoswakefunction, which manifest as follows: BUG: Unable to handle a page fault for...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Fixed the erefcnt leak in ext4xattrblockcachefind. Syzbot reports the following warning: ============================================ WARNING: CPU: 0, PID: 5075, at fs/mbcache.c:419, module mbcachedestroy+0x224/0x290. Linke...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: udf: Avoid excessive partition sizes. Avoid mounting file systems where the partition would overflow the 32-bit range used for block numbers. Also, refuse to mount file systems where the partition size is so large that it is...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: udf: Avoid using corrupted block bitmap buffers. When the filesystem’s block bitmap is corrupted, we detect the corruption while loading the bitmap. As a result, allocation attempts fail with an error. However, the next allocatio...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: Avoid out-of-bounds shifts. UBSAN encounters undefined behavior in blk-iocost, where sometimes iocg-delay is shifted right by a number that is too large, resulting in undefined behavior on some architectures. 186.5565...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fixed a UAF in blkcgunpinonline. blkcgunpinonline traverses the blkcg hierarchy to set the object as online. To traverse this hierarchy, it uses blkcgparentblkcg, but this call occurs after blkcgDestroyBlksblkcg, whic...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fixed the issue where a memory leak occurred after the session was logged off. There is an issue with the interaction between SMB2 session logging out and SMB2 session setup. This issue causes a memory leak after the sessi...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb/client: Avoid referencing rdata=NULL in smb2newreadreq. This occurs when calling from SMB2read while using rdma, and when reaching the rdmareadwritethreshold...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: f2fs: multidev: fix to recognize valid zero block addresses According to Yi Zhang’s report in the mailing list 1, a kernel warning was detected during the zbd/010 test as follows: ./check zbd/010 zbd/010 test for gap zone support...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: scsi: sd: A “off-by-one” error has been fixed in sdreadBlockcharacteristics. If the device returns page 0xb1 with a length of 8 this occurs with QEMU v2.x, for example, sdReadBlockCharacteristics may attempt an out-of-bounds...