Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iommufd/iovabitmap: Fixed a out-of-bounds situation in iovabitmapoffsettoindex. A UBSAN out-of-bounds issue was addressed in iovabitmapoffsettoindex, where shifting the constant “1” of type int by bitmap-mapped.pgshift a unsigned...

Astra Linux – Vulnerability in Linux 5.10, 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 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 freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, deleting offscreen bitmaps caused gdi-drawing to point to freed memory, leading to UAF when related update packets arrived. A malicious server could trigger client-side use after the objects were freed,...

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: added a sanity check on sitbitmapsize. With the above testcase, resizing will generate a corrupted image that contains inconsistent metadata. Therefore, when mounting such an image, it will trigger a kernel panic. Steps to...

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 – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, 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 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, 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. Then, mdadm will trigger a “Segmentation fault”. This is a bug specific to cluster-md. In non-clustered...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, 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 freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.0, a client-side heap out-of-bounds read/write occurred in FreeRDP’s bitmap cache subsystem due to an off-by-one boundary check in bitmapcacheput. A malicious server could send a CACHEBITMAPORDER Rev1 with a...

Astra Linux – Vulnerability in poppler, poppler-22

Before version 25.04.0, crafted input files could cause out-of-bounds reads in the JBIG2Bitmap::combine function within JBIG2Stream.cc, due to an improperly placed isOk check...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Additional checks have been added in niclear. The addition of a check for NTFSFLAGSLOGREPLAYING prevents access to the uninitialized bitmap during the replay process...

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

In the Linux kernel, the following vulnerability has been resolved: The issue with bitmap corruption when using CLOSERANGEUNSHARE in closerange has been fixed. The function copyfdbitmapsnew, old, count is expected to copy the first count/BITSPERLONG bits from old-fullfdsbits and fill the rest wit...

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, libsdl1.2

There is a heap overflow issue in the video/SDLpixels.c file in SDL Simple DirectMedia Layer versions 2.x to 2.0.18. By creating a malicious .BMP file, an attacker can cause the application using this library to crash, result in a denial of service, or lead to code execution...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: memstick/msblock: A memory leak has been fixed. The erasedblocksbitmap is never freed. Since it is allocated at the same time as usedblocksbitmap, it is likely that it should also be freed at the same time. Add the correspondi...

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 in Linux

In the Linux kernel, the following vulnerability has been resolved: md/raid1: Proper indications of failure are provided when ending a failed write request. This patch addresses a data corruption bug in raid1 arrays that use bitmaps. Without this fix, the bitmap bits for failed I/O operations wou...

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

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...