Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/gma500: Fixed the warning “WARNONlock-magic != lock”. psbgemunpin calls dmaresvlock, but the underlying wwmutex is destroyed by drmgemobjectrelease. To fix this issue, the call to drmgemobjectrelease should be moved to aft...

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

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Drop the channel lock before queuing buffers. Ensure that read and write locks for the channel are not acquired consecutively by dropping the read lock from parsexferevent. This allows a callback provided to the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: The commit 7ba5ca32fe6e “ALSA: firewire-lib: operate for period elapse event in process context” removed the process context workqueue from amdtpdomainstreampcmpointer and updatepcmpointers, thereby eliminating its overhead. With...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drm/i915: fixed a race condition UAF in i915perfaddconfigioctl. Userspace may attempt to race the creation of the oaconfig object with config remove, resulting in a use-after-free if we dereference the object after unlocking the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not create EA inodes under the buffer lock The ext4xattrsetentry function creates new EA inodes while holding the buffer lock on the external xattr block. This is problematic because all allocation-related locking...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: mctp: route: hold key-lock in mctpflowprepareoutput The mctpflowprepareoutput function checks key-dev and may call mctpdevsetkey. However, it does not hold key-lock during this process. Both mctpdevsetkey and mctpdevreleasekey...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs: dlm: fix race in lowcomms This patch fixes a race condition between queuework in dlmlowcommscommitmsg and srcureadunlock. queuework may take the final reference to a dlmmsg, causing msg-idx to contain garbage, as indicated by...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: drm/gma500: Fixed a bug where a sleeping function called from an invalid context caused errors. The function gmacrtcpageflip held the eventlock spinlock while calling crtcfuncs-modesetbase, which requires the wwmutex. The only...

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

In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Lock port-lock when calling uarthandlectschange The uarthandlectschange function must be called with the port locked. Since we execute it in a separate process, the lock might not be taken at the time of executio...

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

In the Linux kernel, the following vulnerability has been resolved: mm/swap: Fixed the race condition between swapoff and getswappages. The si-lock must be held when deleting the si from the available list. Otherwise, another thread may re-add the si to the available list, leading to memory...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8192u: Fixed a deadlock in ieee80211beaconsstop. There is a deadlock in ieee80211beaconsstop, as shown below: Thread 1 | Thread 2 | ieee80211sendbeacon ieee80211beaconsstop | modtimer spinlockirqsave //1 | Wa...

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: soc: qcom: pdr: Fixed the potential deadlock issue. When some client process A calls pdraddlookup to add a lookup for the service and performs scheduling-related tasks, another process B receives a new server packet indicating th...

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: Fixed null-ptr-deref in socklockinitclassandname and rmmod. When I ran the reproduction steps and waited for a few seconds, I observed two LOCKDEP warnings: a warning immediately followed by a null-ptr-deref. Reproduction...

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: led-backlight: ledbl: The lock must be held when calling ledsysfsdisable. Lockdep has detected the following issue during the removal of led-backlight: 142.315935 ------------ Cut here ------------ 142.315954 WARNING: CPU: 2; PID...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: fixed the bug in the trap function of smb2lock. If the lock count is greater than 1, the flags might contain an old value. This issue should be checked using the flags of smb Lock, not those of smb Lock. This could lead...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: gpio: pca953x: Fixed the race condition in pca953xirqbussyncunlock. Ensure that i2clock is held when setting the interrupt latch and mask in pca953xirqBusSyncUnlock. This prevents race conditions. Another non-probing call site...

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

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: RFCOMM: Fixed a possible deadlock in rfcommskstatechange. rfcommskstatechange attempts to use socklock, so it should never be called with it locked. However, rfcommsockioctl always attempts to lock it, causing the...

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: hns3: fixed an oops error when unloading drivers that are parallel to each other. When unloading the hclge driver, it attempts to disable sriov first for each aedev node from hnae3aedevlist. If the hns3 driver is unloaded at...

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: btrfs: fix use-after-free when attempting to join an aborted transaction When we are trying to join the current transaction and if it's aborted, we read its 'aborted' field after unlocking fsinfo-translock and without holding any...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: gpio: xilinx: Convert gpiolock to a raw spinlock. Functions related to the irqchip may be called in the context of a raw spinlock. Therefore, we must also use a raw spinlock for our own internal locking mechanisms. This fix...