Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: md/md-bitmap: corrected incorrect usage of sbindex The commit d7038f951828 “md-bitmap: do not use -index for pages backing the bitmap file” removed page-index from the bitmap code. However, incorrect code logic was retained fo...

Astra Linux – Vulnerability in openimageio

There are multiple denial-of-service vulnerabilities in the image output closing functionality of the OpenImageIO Project’s OpenImageIO v2.4.4.2. specially crafted ImageOutput Objects can lead to multiple null pointer dereferences. An attacker can provide malicious inputs to exploit these...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: f2fs: A fix was made to avoid using f2fsbugon in f2fsnewnodepage. As reported by Dipanjan Das , syzkaller discovered a bug in f2fs as follows: RIP: 0010:f2fsnewnodepage+0x19ac/0x1fc0 fs/f2fs/node.c:1295 Call Trace: writeallxattrs...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: dm mirror log: The bitsetsize is rounded up to BITSPERLONG. The code in dm-log rounds up bitsetsize to 32 bits. Then, it uses findnextzerobitle on the allocated region. findnextzerobitle accesses the bitmap using unsigned long...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid allocating blocks from a corrupted group in ext4mbfindbygoal. The logic for checking whether the block bitmap of the group is corrupted is now placed under the protection of the group lock, thereby avoiding the...

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

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nfconntrackh323: Added protection against bmp length being out of range. The UBSAN load reports an exception due to bitwise shifts that are out of bounds for their data type. vmlinux getbitmapb=75 + 712 vmlinux...

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: md/raid10: check slab-out-of-bounds in mdbitmapgetcounter If we write a large number to md/bitmapsetbits, mdbitmapcheckpage will return -EINVAL because ‘page = bitmap-pages’. However, the returned value was not checked immediatel...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: block: RCU protection for disk-convzonesbitmap It is ensured that revalidating a disk by changing the conventional zones bitmap does not cause invalid memory references when using the helper function diskzoneisconv, with RCU...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Regenerate the buddy structure after block freeing fails when under fc replay. This fix primarily reverts to commit 6bd97bf273bd “ext4: Remove redundant mbregeneratebuddy”, and reintroduces the function mbregeneratebuddy...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid allocating blocks from a group with a corrupted block bitmap in ext4mbtrybestfound. Determine whether the group block bitmap is corrupted before using acbex in ext4mbtrybestfound to prevent allocating blocks from a...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid dividing by 0 in the mbupdateavgfragmentsize function when the block bitmap is corrupted. Determine whether to set bbfragments to 0 instead of determining bbfree to eliminate the risk of dividing by zero when the bloc...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: drivers/md/md-bitmap: Check the return value of mdbitmapgetcounter. Check the return value of mdbitmapgetcounter in case it returns a NULL pointer, which would lead to a null pointer dereferencing. v2: Updated the check to includ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: md/bitmap: Do not set sb values if the sanity check fails. If the bitmap area contains invalid data, the kernel will crash, and mdadm will trigger a “Segmentation fault”. This is a bug specific to cluster-md. In non-clustered...

Astra Linux – Vulnerability in ntfs-3g

A properly crafted NTFS image with an unallocated bitmap can lead to an endless recursive function call chain starting from ntfsattrpwrite, causing stack consumption in NTFS-3G 2021.8.22...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: exfat: Check if the cluster number is valid. Syzbot reported a slab-out-of-bounds read in exfatclearbitmap. This issue was triggered when the reproducer called truncute with a size of 0, resulting in the following error messag...

Astra Linux – Vulnerability in htmldoc

A buffer under-reading issue based on stacks in the htmldoc before version 1.9.12 allows attackers to cause a denial of service by using a crafted BMP image with the imageloadbmp function...

Astra Linux – Vulnerability in libsdl2

SDL Simple DirectMedia Layer version 2.0.12 has a heap-based buffer over-read issue in the function Blit3or4to3or4inversedrgb in the file video/SDLblitN.c, caused by a malicious .BMP file...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: exfat: Fixed the divide-by-zero issue in exfatallocatebitmap. The variable maxracount can be 0 in exfatallocatebitmap. This can cause a divide-by-zero error in the subsequent modulo operation i % maxracount, resulting in a system...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86: Fixed a stack-out-of-bounds memory access from ioapicwriteindirect. KASAN reports the following issue: BUG: In kvmmakevcpusrequestmask+0x174/0x440 kvm, there is a stack-out-of-bounds situation. A read of size 8 at...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: A overflow issue was fixed in the bitmapipcreate function before the bitmap was widened. When firstip is 0, lastip is 0xFFFFFFFF, and the netmask is 31, the value of an arithmetic expression 2 netmask - maskbits...