Astra Linux – Vulnerability in Linux, Linux 5.10

A non-privileged write-to-file handler flaw exists in the Linux kernel’s control groups and namespaces subsystem. This flaw allows users to gain access to certain less-privileged processes that are controlled by cgroups, even when those processes have higher-privileged parent processes. This issu...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: A potential memory leak has been fixed in ext4fcrecordregions. Since krealloc may return NULL, in this case, state-fcregions may not be freed by krealloc. However, state-fcregions is already set to NULL. This could lead to ...

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

In the Linux kernel, the following vulnerabilities have been resolved: tipc: Changed the nlapolicy for bearer-related names to NLANULSTRING. The syzbot reported the following uninit-value access issues 1: ===================================================== BUG: KMSAN: uninit-value in strlen in...

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

A use-after-free vulnerability in the Linux kernel’s netfilter:nftables component can be exploited to achieve local privilege escalation. Adding or removing rules from chain bindings within the same transaction can lead to use-after-free issues. We recommend upgrading to the version after the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed an uninitialized value in ‘ext4evict inode’. Syzbot identified the following issue: ===================================================== BUG: KMSAN: Uninitialized value in ext4evict inode+0xdd/0x26b0,...

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: bpf: Reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: c sk = somelookupfunc bpfskassignskb, sk bpfskreleasesk That is, the sk is not consumed by bpfskassign. Therefore, the function must ensure...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A flaw was discovered in the udmabuf device driver of the Linux kernel, within a fault handler. This issue arises due to the lack of proper validation of user-supplied data, which can lead to memory access beyond the end of an array. This may allow an attacker to escalate privileges and execute...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: x86/hyperv: Disabling IBT when the hypercall page lacks the ENDBR instruction. On hardware that supports Indirect Branch Tracking IBT, Hyper-V VMs with ConfigVersion 9.3 or later support IBT in the guest. However, current version...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drm/i915: fixed a race condition UAF in i915perfaddconfigioctl. Userspace may attempt to race the creation of the oaconfig object with config remove, resulting in a use-after-free if we dereference the object after unlocking the...

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: btrfs: Fixed the lockdep splat issue and potential deadlock that occurs after running delayed items. When running delayed items, we hold the mutex of the delayed node. Then, we attempt to modify a subvolume btree to insert, updat...

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

In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-digi00x: prevent potential use after free This code was supposed to return an error code if initstream failed, but it instead freed dg00x-rxstream and returned a success status. This could potentially lead to use o...

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: refscale: Uninitialized use of waitqueueheadt was fixed. Running the refscale test occasionally causes the kernel to crash with the following error: 8569.952896 BUG: Unable to handle a page fault for address: ffffffffffffffe8...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for leaking uninitialized memory in the fast-commit journal When space at the end of the fast-commit journal blocks is unused, make sure to zero it out so that uninitialized memory is not leaked to the disk...

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

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fixed the memory leak related to ‘conf-biosplit’. In the error path of raid10run, ‘conf’ needs to be freed. However, ‘conf-biosplit’ is not freed, resulting in a memory leak. Since there are three places where ‘conf’...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: In the net: stream module, the purge skerrorqueue operation in skstreamkillqueues has been fixed. Changheon Lee reported TCP socket leaks, with a detailed reproduction guide. It appears that we encounter TCP socket leaks in the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fixed the return type of lcsstartxmit With Clang’s Kernel Control Flow Integrity kCFI, CONFIGCFICLANG, indirect call targets are validated against the expected function pointer prototype to ensure that the call target i...

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

In the Linux kernel, the following vulnerabilities have been resolved: debugobjects: Do not wake up kswapd from fillpool. syzbot reports a lockdep warning in fillpool, because the allocation via debugobjects uses GFPATOMIC, which is GFPHIGH | GFPKSWAPDRECLAIM. This attempt to wake up kswapd resul...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: MIPS: vpe-mt: fixed a possible memory leak when the module exits. After committing 1fa5ae857bb1 “driver core: removed the struct device’s busid string array”, the name of the device is allocated dynamically. This allocation needs...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: userfaultfd: Fixes the checks for huge PMDs. Patch series “userfaultfd: fix races around pmdtranshuge check”, v2. The pmdtranshuge code in mfillatomic is incorrect in three different ways, depending on the kernel version: 1. T...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: fs/ntfs3: Validates buffer length during parsing of indexes. The indxread function is called when performing NTFS directory operations that require more information from the index buffers. This adds a sanity check to ensure th...