Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: Platform/x86: dell-smbios-wmi: Fixed an oop in rmmod dellsmbios. The initdellsmbioswmi function only registers the dellsmbioswmidriver on systems where the Dell WMI interface is supported. While the exitdellsmbioswmi function...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: powerpc/setmemory: Avoid spinlock recursion in changepageattr The commit 1f9ad21c3b38 “powerpc/mm: Implement setmemory routines” included a spinlock call in changepageattr in order to safely perform the three-step operations...

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 failures during online resizing due to an overly large flexbgsize. When we perform online resizing on an ext4 filesystem with an excessively large flexbgsize, the following warning is triggered:...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: EFI: Do not map the entire mokvar table to determine its size. Currently, when validating the mokvar table, we re-map the entire table on each iteration of the loop, adding space as we discover new entries. If the table grows...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: “block, bfq”: fixed a potential UAF issue for “bfqq-bic” in “bicsetbfqq”. After the commit “64dc8c732f5c” “block, bfq: fix possible UAF for ‘bfqq-bic’”, “bic-bfqq” will be accessed in “bicsetbfqq”. However, in some contexts,...

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

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: 6lowpan: resetting the link-local header in the IPv6 receive path The Bluetooth 6lowpan.c netdev module has the headerops function; therefore, it must set the link-local header for the RX skb packet. Otherwise, thin...

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

In the Linux kernel, the following vulnerability has been resolved: net: added vlangetprotocolanddepth helper. Previously, skbmaypull was used instead of skbheaderpointer in vlangetprotocol and related functions. Few calls relied on skb-head being populated with the MAC header. syzbot detected on...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: dm raid: fixed the address sanitizer warning in raidstatus. This warning occurs when using a kernel with address sanitizer and running this testsuite: https://gitlab.com/cki-project/kernel-tests/-/tree/main/storage/swraid/scsirai...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed a slab-use-after-free in ext4splitextentat. We encountered the following use-after-free issues: BUG: KASAN: slab-use-after-free in ext4splitextentat+0xba8/0xcc0 Read of size 2 at addr ffff88810548ed08 by task...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: sched/scs: The task stack state is reset in bringupcpu. When a CPU is hot-plugged, the idle task on that CPU calls several layers of C code before finally leaving the kernel. When KASAN is in use, a “poisoned” shadow is left behi...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed the overloading of the meaning of MEMUNINIT Lonial reported an issue with the BPF verifier, where the checkmemsizereg function contains the following code: c if !tnumisconstreg-varoff / For unprivileged variable...

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

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Support for specifying the srptserviceguid parameter. The current behavior is that setting this parameter while loading the ibsrpt kernel module triggers a kernel crash. BUG: Kernel NULL pointer dereferencing, address:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Wifi: libertas – Fixed a possible reference count leak in ifusbprobe. The function usbgetdev will be called before lbsgetfirmwareasync. This means that the function usbputdev must be called when lbsgetfirmwareasync fails...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ARM: OMAP2+: Fixed a memory leak in realtimecounterinit. The "sysclk" resource is allocated using clkget, and it is not released when the function returns...

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: wifi: ath11k: fixed node corruption in the “ar-arvifs” list In the current WLAN recovery code flow, ath11kcorehalt only re initializes the “arvifs” list head. This causes the list node immediately following the list head to becom...

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

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fixed possible data races in gfs2showoptions Some fields such as gtlogdsecs of the struct gfs2tune are accessed without holding the lock gtspin in gfs2showoptions: val = sdp-sdtune.gtlogdsecs; if val != 30 seqprintfs,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: fixed the issue with the netdevstartxmit trace event vs skbtransportoffset After the committed code, we must be more careful when using skbtransportoffset, as reminded by syzbot: WARNING: CPU: 0 PID: 10 at...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: Handling of integer overflows in kmallocreserve The committed change was as follows: c ptr = kmallocsize; if ptr size = ksizeptr; size = kmallocsizeroundupsize; ptr = kmallocsize; This caused various crashes, as reported ...

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: KVM: Fixed a data race on lastboostedvcpu in kvmvcpuonspin. Used READ,WRITEONCE to access kvm-lastboostedvcpu to ensure that reads and writes are atomic. In the extremely unlikely scenario where the compiler introduces errors in...

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

In the Linux kernel, the following vulnerabilities have been resolved: Media: imon: Make sendpacket more robust syzbot reports that imon has three problems that result in hung tasks due to continuously holding the device lock 1. The first problem is that when usbrxcallbackintf0 encounters an...