Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Regulator: Core: Fix for unbalanced node refcount in regulatordevlookup The following report was received: ERROR: Memory leak; expected refcount 1 instead of 2. Unbalanced in ofnodeget/ofnodeput – destroyed cset entry: Attaching...

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

In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: enhanced error handling for tightly received RTS messages in xtprxrtssessionnew This patch improves error handling in scenarios where RTS Request to Send messages arrive frequently. It replaces the less informati...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: Avoid unregistering devlink regions that were never registered. Russell King reported that a system with mv88e6xxx dereferenced a NULL pointer when unbinding this driver:...

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

In the Linux kernel, the following vulnerability has been resolved: iwlwifi: fix use-after-free If no firmware was present at all or, presumably, all of the firmware files failed to parse, we end up unbinding by calling devicereleasedriver, which calls remove. This then calls iwldrvstop, freeing...

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: netrom: Fixed a memory leak in nrsendmsg. syzbot reported a memory leak 1. When the function sockallocsendskb returns NULL in nroutput, the original skb is not freed. This skb was allocated in nrsendmsg. This issue was fixed b...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: Fixed a data race around sysctltcpnotsentlowat. When reading sysctltcpnotsentlowat, it can be changed concurrently. Therefore, we need to add READONCE to its reader function...

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

In the Linux kernel, the following vulnerability has been resolved: Bonding: A buffer overflow issue was fixed in the bondoptionarpiptargetsset function. In this function, if newval-string is an empty string, newval-string+1 will point to the byte after the string, leading to a buffer overflow an...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fixed the issue ofracy access to the physical CPU number in the diag 9c handler. We currently check if the target CPU equals -1, but this may change at a later time when we will use this functionality. We store th...

Astra Linux – Vulnerability in Linux

In the rbd block device driver located in drivers/block/rbd.c within the Linux kernel, up to version 5.8.9, incomplete permission checks were used for accessing rbd devices. This could have been exploited by local attackers to map or unmap rbd block devices, specifically the CID-f44d04e696fe devi...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: “Revert ‘f2fs: fix to do sanity check on extent cache correctly’” The syzbot reports a bug in f2fs as follows: UBSAN: Array-index-out-of-bounds in fs/f2fs/f2fs.h:3275:19 Index 1409 is out of range for type ‘le32923’ aka ‘unsigned...

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: ext4: Refresh the inline data size before write operations The cached ei-iInlineSize can become stale between the initial size check and when ext4updateInlineData/ext4createInlineData use it. Although ext4getmaxInlineSize reads t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: In ext4, the work related to queued discard operations is always drained in ext4mbrelease. While reviewing the recent ext4 patch1, Sashiko raised the following concern2: If the file system is initially mounted with the discard...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ALSA: mts64: Fix possible null-ptr-defer in sndmts64interrupt I received a “null-ptr-defer” error report when performing the following tests on the QEMU platform: I executed the following commands: make defconfig and...

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

In the Linux kernel, the following vulnerability has been resolved: posix-clock: The missing timespec64 check in pcclocksettime has been fixed. As Andrew pointed out, it makes sense that the PTP core checks the tvsec and tvnsec fields of the timespec64 structure before calling ptp-info-settime64...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: rapidio: Replace riofreenet with kfree in rioscanallocnet. When the idtab allocation fails, the network is not yet registered with rioaddnet. Therefore, calling kfreenet is sufficient to release the memory. Set mport-net to NULL ...

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

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Handling of inconsistent states in nilfsbtnodecreateblock. Syzbot reported that an inconsistency in the buffer state was detected in nilfsbtnodecreateblock, which triggered a kernel bug. It is not appropriate to consider...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Net: DSA: Fix for panic upon shutdown if the multi-chip tree fails to probe. DSA probing is atypical because the device tree must probe all devices at once. Thus, out of N switches that call dsatreesetuproutingtable during probin...

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: net: arc: fixed the device for dmamapsingle/dmaunmapsingle ndev-dev and pdev-dev are not the same device; use ndev-dev.parent, which has dmamask. ndev-dev.parent is simply pdev-dev. Otherwise, the following issue will occur:...