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: NFSD: Limit the number of concurrent async COPY operations It seems that nothing limits the number of concurrent async COPY operations that clients can initiate. Additionally, AFAICT allows each async COPY to copy an unlimited...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: sched: using the RCU read-side critical section in tapriodump Fixed a possible use-after-free in ‘tapriodump’ by adding the RCU read-side critical section. This issue was not encountered on x86, but was found on an arm64...

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

In the Linux kernel, the following vulnerabilities have been resolved: leds: class: Protect access to brightnessshow using ledcdev-ledaccess mutex There is a NULL pointer issue observed when Process A adds a hid device, resulting in the addition of a ledcdev object. Subsequently, another call to...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fixed the race condition issue caused by session lookup and expiration. The session reference count was incremented within the lock during the lookup operation, thereby avoiding the race condition related to session...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: mcast: added RCU protection to mldnewpack The mldnewpack function can be called without holding RTNL or RCU. It should be noted that we can no longer use sockallocsendskb, because ipv6.igmpsk relies on GFPKERNEL...

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

In the Linux kernel, the following vulnerabilities have been resolved: - ndisc: RCU protection was added to ndiscallocskb. - ndiscallocskb can be called without holding RTNL or RCU. RCU protection was added to avoid potential Use-after-Free UAF vulnerabilities...

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

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: Use RCU protection in ip6defaultadvmss. ip6defaultadvmss requires RCU protection to ensure that the network structure it reads does not disappear...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: A use-after-free issue was fixed in ksmbdsessionrpcopen. A UAF Use-After-Free issue may occur due to a race condition between ksmbdsessionrpcopen and sessionrpcclose. Adding rpclock to the session can help protect it fr...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: VMCI: Check context-notifypage after the call to getuserpagesfast to avoid GPF. The call to getuserpagesfast in vmcihostunlockedioctl may return NULL for context-notifypage, causing a GPF. To avoid this, check if context-notifypa...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Added bounds checking in getmaxinlinexattrvaluesize. Normally, extended attributes within the inode body would be checked when the inode was first opened. However, if someone writes to the block device while the file system...

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

In the Linux kernel, the following vulnerability has been resolved: nilfs2: A potential UAF Use-After-Free error in struct nilfsscinfo can be prevented in nilfssegctorthread. The finalization of nilfssegctorthread may race with nilfssegctorkillthread, which terminates that thread. This could...

Astra Linux – Vulnerability in isc-dhcp

In ISC DHCP 4.1-ESV-R1 - 4.1-ESV-R16, ISC DHCP 4.4.0 - 4.4.2 Other branches of ISC DHCP e.g., releases in the 4.0.x series or earlier, and releases in the 4.3.x series are beyond their End-of-Life period and are no longer supported by ISC. It is clear that this defect is also present in releases...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ip: Fixed data races related to sysctlipprotsock. sysctlipprotsock is accessed concurrently, and there is always a chance of data races occurring. Therefore, both readers and writers require some basic protection to avoid...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: char: tpm: Protect tpmpmsuspend with locks Currently, tpm transactions are executed unconditionally in the tpmpmsuspend function, which may lead to races with other tpm accessors in the system. Specifically, the hwrandom tpm driv...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fixed a race condition in SNDCTLDSPSYNC There is a small race condition in the sndpcmosssync function, which is called from OSS PCM SNDCTLDSPSYNC ioctl. Specifically, the function calls sndpcmossmakeready first, a...

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

In the Linux kernel, the following vulnerability has been resolved: fs/proc: dotaskstat: The sig-statslock lock is used to gather statistics about threads/children. The locktasksighand function can cause a hard lockup. If NRCPUS threads call dotaskstat at the same time, and the process has...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: USB: core: Fixed a deadlock in the “disable” sysfs attribute. The show and store callback routines for the “disable” sysfs attribute in port.c acquire the device lock for the port’s parent hub. This can cause problems if another...

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: fs: sysfs: Fixed a reference leak in sysfsbreakactiveprotection The sysfsbreakactiveprotection routine has a clear reference leak in its error handling path. If the call to kernfsfindandget fails, kn will be NULL. As a result, th...

Astra Linux – Vulnerability in Linux

The arch/x86/kvm/mmu/pagingtmpl.h file in the Linux kernel before version 5.12.11 incorrectly calculates the access permissions of a shadow page, resulting in a missing guest protection page fault...

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

In the Linux kernel, the following vulnerability has been resolved: bpf: Consider the return from setmemoryro when using bpfproglockro setmemoryro may fail, leaving memory unprotected. Consider this return value as an error...