Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: afpacket: moved the call to packetdevmc out of the RCU critical section. Syzkaller reports the following issues: BUG: A sleeping function is called from an invalid context at kernel/locking/mutex.c:578 mutexlock+0x106/0xe80...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: net: tun: Fix use-after-free in tundetach Syzbot reported a use-after-free in tundetach. This causes a call trace like the following: ================================================================== BUG: KASAN: use-after-free i...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: mmmremap.c: Avoid unnecessary calls to invalidrangestart/invalidaterangeend when using mremap with oldsize=0. If the mremap system call with oldsize=0 ends up in movepagetables, it will unnecessarily call...

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

In the Linux kernel, the following vulnerability has been resolved: clk: A memory leak was fixed in devmclknotifierregister. devmclknotifierregister allocates a devres resource for the clk notifier, but it does not register that resource with the device. As a result, the notifier remains...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The netlink notifier might race to release objects. The commit release path is invoked via callrcu, and it runs without locking to release the objects after the rcu grace period. The netlink notifier handler...

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

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race condition during shadow creation Currently, it is possible to encounter a crash when kvms390vsiegmapnotifier is called, with gmap-private being set to zero. This issue arises because we add gmap-private ...

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

In the Linux kernel, the following vulnerability has been resolved: Networks: Fixed a stack overflow issue when LRO is disabled for virtual interfaces. When the features of a virtual interface are updated, the updated features are synchronized with its underlying interfaces. This synchronization...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The flow rule object is released from the commit path. There is no need to delay this process until the commit release path, as no packets traverse this object at all. It is accessed only from the control...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: PPC: Fixed the issue with the vcpuload leak in kvmarchvcpuioctl. The vcpuput function is not called if the user copy fails. This can lead to problems such as corruption of the preempt notifier and system crashes...

Astra Linux – Vulnerability in Linux 5.10

A double-free flaw was discovered in the Linux kernel’s TUN/TAP device driver functionality, particularly in how a user registers the device when the registernetdevice function fails with the NETDEVREGISTER notifier. This flaw allows a local user to crash the system or potentially escalate their...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Wifi: ath12k: Fixed an UAF Use-after-Free in ath12kcoreinit. When the execution of ath12kcoreHWGroupAssign or ath12kcoreHWGroupCreate fails, the registered notifier chain is not properly unregistered. Its memory is freed after...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: lapbether: ignore ops-locked netdevs Syzkaller managed to trigger a lock dependency in xsknotify via registernetdevice. As discussed in 0, using registernetdevice in notifiers is problematic, so we skip adding the lapbeth fo...

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: hvnetvsc: The NETDEVICEREGISTER call was missed when registering VF in netvscprobe. If the hvnetvsc driver is unloaded and reloaded, the NETDEVICEREGISTER handler cannot successfully register VF, as the register call is received...

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

In the Linux kernel, the following vulnerability has been resolved: mtd: Fixed a NULL pointer dereferencing issue caused by the ftl notifier. If both ftl.ko and gluebi.ko are loaded, the ftl notifier triggers a NULL pointer dereferencing when attempting to access ‘gluebi-desc’ in gluebiread. In t...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: Rejects attempts to consume or refresh inactive gfntopfncache. kvmgpccheck and kvmgpcrefresh are rejected if the cache is inactive. Not checking the active flag during refresh is particularly problematic, as KVM may end u...

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

In the Linux kernel, the following vulnerability has been resolved: PM / devfreq: A leak was fixed in devfreqdevrelease. The srcuinitnotifierhead function allocates resources that need to be released using a srcucleanupnotifierhead call. Reported by kmemleak...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: perf: hisi: Fixed a use-after-free when attempting to register the uncore PMU. When we fail to register the uncore PMU, the PMU context may not be allocated. Handling this error will involve calling cpuhpstateremoveinstance, whic...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: media: v4l: async: Fix notifier list entry init The struct v4l2asyncnotifier contains several listhead members, but only waitinglist and donelist are initialized. The notifierentry was left “zeroed”, resulting in an uninitialized...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: mwifiex: The link must be brought down before the interface is deleted. We can encounter a deadlock situation when using rmmod to remove a driver or during firmware reset. This is because the cfg80211unregisterwdev function mu...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: mac802154: fixed the missing INITLISTHEAD in ieee802154ifadd. The kernel fault injection test reports a NULL pointer dereference as follows: BUG: NULL pointer dereferencing in the kernel; address: 0000000000000008 RIP:...