Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: can: gsusb: gsusbreceivebulkcallback: Check actuallength before accessing the header. The driver expects to receive a struct gshostframe in gsusbreceivebulkcallback. Use structgroup to describe the header of the struct gshostfram...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fbdisplayi-mode to NULL when the mode is released. Recently, we discovered the following issue through syzkaller: BUG: KASAN: Slab-use-after-free in fbmodeisequal+0x285/0x2f0 A read of size 4 at address ff11000001b3c69...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: NFSD: NFSv4 file creation neglects setting the ACL. A NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL later. It finds that the ACL is only a default ACL based on the mode bits, not the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: usb: qmiwwan: Initialize the MAC header offset in qmimuxrxfixup Raw IP packets do not have a MAC header, resulting in skb-macheader being uninitialized. This can trigger kernel panics on ARM64 when xfrm or other subsystems...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed an invalid prog-stats access when updateeffectiveprogs fails. The issue occurs due to a fault-injected code sequence in updateeffectiveprogs. The problem can be described as follows: c cgroupbpfdetach...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: In the bitPutcs function, the bound-check glyph index was derived from the character value masked by 0xff or 0x1ff. This may lead to reading beyond the end of the built-in font array, exceeding the actual number o...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: jfs: Verify the inode mode when loading from disk. The inode mode loaded from a corrupted disk may be invalid. Do as described in the commit 0a9e74051313 “isofs: Verify the inode mode when loading from disk”...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: sxgbe: fixed the potential NULL dereference in sxgberx. Currently, when skb is null, the driver prints an error and then dereferences skb on the next line. To fix this, we need to add a ‘break’ after the error message, so th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Check the length of skb for an unknown CC opcode. In hcicmdCompleteevt, if the command completion event has an unknown opcode, we assume that the first byte of skb-data contains the return status. However, th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Net: Bridge – Fix for use-after-free due to bypassing the port’s state 1 Syzbot reported a use-after-free when deleting an expired fdb. This issue arises due to a race condition between the ongoing learning process and the deleti...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fixed out-of-band OOB access during the parseadvmonitorpattern function execution. In the parseadvmonitorpattern function, the value of the length variable is currently limited to HCIMAXEXTADLENGTH251. The size o...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: pagepool: Fixed a use-after-free in pagepoolrecycleinring. syzbot reported a UAF Use-After-Fault in pagepoolrecycleinring: BUG: KASAN: Slab-use-after-free in lockrelease+0x151/0xa30 in kernel/locking/lockdep.c:5862. A size 8...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: intelth: Fixed a device leak during the output of an opened device. Make sure to remove the reference that was used when checking the th device during the opening of a device via open. This reference still causes a leak even afte...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: EFI/CPER: Do not dump the entire memory region. The current logic in cperprintfwerr does not check whether the length of the error record is sufficient to handle the offset. In a faulty firmware, if the offset is greater than the...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: can: gsusb: gsusbreceivebulkcallback: fixed a URB memory leak. In gscanopen, the URBs for USB-in transfers are allocated, added to the parent-rxsubmitted anchor, and then submitted. In the complete callback...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bonding: alb: Fixed UAF in rlbarprecv during bond up/down The ALB RX path may access rxhashtbl concurrently with bond teardown. During rapid bond up/down cycles, rlbdeinitialize frees rxhashtbl while RX handlers are still...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: MIPS: Workaround for LLVM bugs when gp is used as a global register variable. On MIPS, currentthreadinfo is defined as a global register variable located in $gp, and it is simply reassigned during the kernel relocation. However,...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: l2tp: avoided a data race in l2tptunneldelwork We should only access sk-sksocket when dealing with kernel sockets. syzbot reported the following data race: BUG: KCSAN: data race in l2tptunneldelwork / skcommonrelease Task 5365...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: IOMMU: Disable SVA when CONFIGX86 is set The patch series “Fix stale IOTLB entries for kernel address space”, version 7, proposes a fix for a security vulnerability related to IOMMU Shared Virtual Addressing SVA. In an SVA contex...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Fixed a potential underflow in virtiotransportgetcredit. The credit calculation in virtiotransportgetcredit uses unsigned arithmetic: c ret = vvs-peerbufalloc - vvs-txcnt - vvs-peerfwdcnt; If the peer reduces its...