Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: nexthop: Fixed a division by zero issue when replacing a resilient group. The resilient nexthop group-related torture tests in fibnexthop.sh exposed a possible division by zero issue when replacing a resilient group 1. This...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: mm/slub: A check for s-flags was added in the alloctaggingslabfree hook function. When CONFIGMEMCG, CONFIGKFENCE, and CONFIGKMEMLEAK are enabled, the following warning always occurs. This happens because the following call sta...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

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 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 – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: bfq: Ensure that the bfqg we are queuing requests with 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 bfqgroup into a service...

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 Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: PCI: Endpoint: pci-epf-vntb: Remove duplicate resource teardown The epfntbepcdestroy function duplicates the teardown that the caller is supposed to perform later. This leads to an error when .allowlink fails, or when .droplink i...

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 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 found in Linux 5.10, 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 5.10

In the Linux kernel, the following vulnerability has been resolved: virtiovdpa: Building affinity masks conditionally We were trying to build the affinity mask using createaffinitymasks unconditionally, which could lead to several issues: - The affinity mask is not used for parent processes witho...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Improved page fault error reporting If the IOMMU domain for the device group is not properly set up, we may encounter an IOMMU page fault. The current page fault handler assumes that the domain is always set up...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ftrace: Do not over-allocate ftrace memory The calculation of pgremaining in ftraceprocesslocs assumes that ENTRIESPERPAGE multiplied by 2^order equals the actual capacity of the allocated page group. However, ENTRIESPERPAGE i...

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

In the Linux kernel, the following vulnerabilities have been resolved: mlxsw: spectrumacltcam: Fixed stack corruption When tc filters are first added to a network device, the corresponding local port is bound to an ACL group within the device. This group contains a list of ACLs. Each ACL points t...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed the bug in ext4writepages We encountered the following issue: EXT4-fs error device loop0: ext4mbgeneratebuddy:1141: group 0, block bitmap and bg descriptor inconsistent: 25 vs 31513 free cls ------------ cut here...

Astra Linux – Vulnerability in Samba

A flaw was discovered in Samba. The Samba smbd file server must map Windows group identities SIDs to Unix group IDs gids. The code responsible for this mapping contained a flaw that could allow it to read data beyond the end of the array, in the event that a negative cache entry was added to the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ext2: Added more validation checks for inode counts. Checks were added to ensure that the number of inodes stored in the superblock matches the number calculated based on the number of inodes per group. It was also verified th...

Astra Linux – Vulnerability in Systemd

It was discovered that a Systemd service that uses the DynamicUser property can obtain new privileges by executing SUID binaries. This allows the service to create binaries belonging to the transient group, with the setgid bit set. A local attacker could exploit this flaw to access resources that...

Astra Linux – Vulnerability in Shadow

A vulnerability was discovered in Shadow 4.5. The newgidmap function part of shadow-utils is setuid, allowing an unprivileged user to be placed in a user namespace where setgroups2 is allowed. This enables an attacker to remove themselves from a supplementary group, potentially granting them acce...