Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: catch commit test ctx allocation failure The patch series “mm/damon/sysfs: fix commit test damonctx deallocation” addresses this issue. The DAMON sysfs interface dynamically allocates and uses a damonctx object to...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: dm thin: Use the pmd-root from the last transaction when commit fails. Recently, we discovered a problem with a softlockup in the dm thin pool’s btree lookup code due to corrupted metadata. Kernel panic – not syncing: Softlockup:...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: nvme: Fix for the admin queue leak upon controller reset When the nvmeallocadmintagset function is called during a controller reset, it is possible that an existing admin queue still exists. Properly release this queue before...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for accessing an uninitialized lock in the fc replay path. The following kernel trace can be triggered with fstest generic/629 when executed against a filesystem with the fast-commit feature enabled: INFO: Trying to...

Astra Linux – Vulnerability in Linux

The bpf verifier in the Linux kernel failed to properly handle truncation of the mod32 destination register when the source register was known to be 0. A local attacker who had the ability to load bpf programs could exploit this vulnerability by performing out-of-bounds reads in kernel memory,...

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: ubifs: Authentication: Fixed a use-after-free in ubifstncendcommit. After an insertion in TNC, the tree may split, causing a node to change its znode-parent. Further deletions of other nodes in the tree which could also free thos...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

There are use-after-free vulnerabilities in the net/bluetooth/l2capcore.c files, specifically in the l2capconnect and l2capleconnectreq functions. These vulnerabilities may allow code execution and the leakage of kernel memory remotely via Bluetooth. A remote attacker can execute code that leaks...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: “Revert “block, bfq: honor already-setup queue merges”” A crash occurred in conjunction with the commit 2d52c58b9c9b “block, bfq: honor already-setup queue merges”. This issue was later reverted by the commit ebc69e897e17 “Revert...

Astra Linux – Vulnerability in Linux 5.10

A double-free bug in the packetsetring function in net/packet/afpacket.c can be exploited by a local user through crafted syscalls to escalate privileges or deny services. We recommend upgrading the kernel to a version that is not affected by this bug, or rebuilding the code after the...

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

There is a use-after-free in iouring in the Linux kernel. The signalfdpoll and binderpoll functions use a waitqueue whose lifetime is the current task. The waitqueue will send a POLLFREE notification to all waiters before it is freed. Unfortunately, the iouring poll does not handle POLFREE. This...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: kms: Added the drmcrtccommitPut operation. Commit 9ec03d7f1ed3 “drm/vc4: kms: Wait on previous FIFO users before a commit” introduced a global state for the HVS, where each FIFO stores the current CRTC commit. This allow...

Astra Linux – Vulnerability in Linux 5.10

iouring uses workFlags to determine which identities need to be retrieved from the calling process, ensuring that they are consistent with the calling process when executing IORINGOP. Some operations lack certain types, which can lead to incorrect reference counts, potentially causing a...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

Dm-verity is used to extend the root-of-trust to root file systems. LoadPin builds upon this feature to restrict module/firmware loads to only the trusted root file system. Currently, device-mapper table reloads allow users with root privileges to replace the target with an equivalent dm-linear...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: A memory leak occurred in the flow rule processing at the commit path. The flow rule object was aborted during release, but the commit path did not handle this issue properly. The code has been updated to...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: EXT4: Filter out the EXT4FCREPLAY bit from the on-disk superblock’s sstate field. The EXT4FCREPLAY bit in sbi-smountstate is used to indicate that we are currently replaying the fast commit journal. This was actually a mistake, a...

Astra Linux – Vulnerability in Tiff

A null source pointer passed as an argument to the memcopy function within TIFFFetchStripThing in tifdirread.c in libtiff versions from 3.9.0 to 4.3.0 could lead to a Denial of Service attack through a crafted TIFF file. For users who compile libtiff from source code, this fix is available in the...

Astra Linux – Vulnerability in Tiff

A null source pointer passed as an argument to the memcopy function within TIFFReadDirectory in tifdirread.c in libtiff versions from 4.0 to 4.3.0 could lead to a Denial of Service attack through a crafted TIFF file. For users who compile libtiff from source code, a fix is available in the commit...

Astra Linux – Vulnerability in libxml2

The GNOME project’s libxml2 v2.9.10 has a global buffer over-read vulnerability in the xmlEncodeEntitiesInternal function within libxml2/entities.c. This issue has been fixed in the commit numbered 50f06b3e...

Astra Linux – Vulnerability in Linux 5.15

A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to gain local privilege escalation. The perfgroupdetach function did not check the attachstate of the event’s siblings before calling addeventtogroups; moreover, removeonexec allowed calling listdelevent...

Astra Linux – Vulnerability in libxml2

Possible cross-site scripting vulnerability in libxml after commit 960f0e2...