Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs: dropping peer group IDs under namespace lock When cleaning up peer group IDs in the failure path, we need to ensure that the namespace lock is retained. Otherwise, another thread might simultaneously change the mount status...

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 group’s block bitmap is corrupted is now placed under the protection of the group lock, thereby avoiding the possibility...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the implementation of the QEMU virtio-fs shared file system daemon virtiofsd. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in directories shared by virtio-fs, with unintended group ownership. This occurs in a scenario where a...

Astra Linux – Vulnerability in sssd

A race condition flaw was identified in sssd, where the GPO policy is not consistently applied to authenticated users. This could lead to improper authorization issues, granting or denying access to resources inappropriately...

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

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix potential key use-after-free When ieee80211gtkrekeyadd is called, and ieee80211gtkrekeyadd returns 0 due to KRACK protection identical key reinstall, ieee80211gtkrekeyadd will still return a pointer to the key...

Astra Linux – Vulnerability in atftp

In AtFTP, before version 0.7.5, the options.c file contained code that read past the end of an array. As a result, server-side /etc/group data was disclosed to a remote client...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Networks: Bridge: MST: Fixed suspicious RCU usage in brmstsetstate. I converted brmstsetstate to RCU to avoid a vlan use-after-free, but I forgot to change the vlangroupdereferencehelper. I switched to using the...

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: nexthop: It is now forbidden to change the FDB status of a nexthop device while the nexthop is in a group. The kernel prevents the creation of non-FDB nexthop groups that contain FDB nexthops. Example: ip nexthop add id 1 via...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: kernel/sys.c: Fixed the race condition related to the use of tasklocktsk-groupleader in the sysprlimit64 function. The use of tasklocktsk-groupleader in sysprlimit64-doprlimit is incorrect. sysprlimit64 does access...

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

A issue was discovered in the Linux kernel before version 6.3.3. There is an out-of-bounds read in the crc16 function in lib/crc16.c when called from fs/ext4/super.c, because ext4groupdesccsum does not properly check an offset. NOTE: This issue is disputed by third parties, as the kernel is not...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed the issue where a new block group that becomes unused after creation could lead to a use-after-free condition. If a task creates a new block group and that block group becomes unused before it is fully created, durin...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fix for a hang that occurs during unmount when the block group reclaim task is running. When starting an unmount, at closectree, if the reclaim task is running and is in the middle of a data block group relocation, it i...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net/smc: corrected the incorrect listdel in smclgrcleanupearly. The function smclgrcleanupearly was supposed to delete the link group from the link group list, but it accidentally deleted the list head. This could lead to memory...

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: iio: core: fix memleak in iiodeviceregistersysfs When iiodeviceregistersysfsgroup fails, we should free iiodevopaque-chanattrgroup.attrs to prevent potential memleak...

Astra Linux – Vulnerability in Firefox and Thunderbird

When checking whether the Browsing Context was discarded in HttpBaseChannel, if the load group was not available, it was assumed that the Browsing Context had already been discarded. However, this assumption was not always true for private channels after the private session ended. This...

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. However, removeonexec allowed calling listdelevent...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush dev-IOTLB only when the PCIe device is accessible in scalable mode. The commit 4fc82cd907ac “iommu/vt-d: Do not issue ATS invalidation requests when the device is disconnected” relies on pcidevisdisconnected to...

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: jfs: added a sanity check for agwidth in dbMount. When the width of the AG in dmapctl is zero, it triggers a divide error when calculating the control page level in dbAllocAG. To avoid this issue, a check for agwidth must be adde...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bfq: Ensure that the bfqg resource, against which we are queuing requests, is online. BiOS queued into the BFQ IO scheduler can be associated with a cgroup that was already offline. This may lead to the insertion of this...