Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: removed two BUG functions from skbchecksumhelp. I have a syzbot report that managed to cause a crash in skbchecksumhelp. If syzbot can trigger these BUGs, it makes sense to replace them with more friendly WARNONONCE function...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: NFS: Avoid writeback threads getting stuck in mempoolalloc In situations with low memory availability, allow the NFS writeback code to fail without getting stuck in infinite loops in mempoolalloc...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: clk: Fixed clkhwgetclk when dev is NULL. Any registered clkcore structure may have a NULL pointer in its dev field. Although this has never been officially documented, this is evident from the widespread use of clkregister and...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Input: i8042 – fixed the issue of leaking the platform device when the module was removed. Avoid resetting the i8042platformdevice pointer across modules in i8042probe or i8042remove, so that the device can be properly destroyed ...

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: usb: dwc3: Fixed a race condition between concurrent call paths that invoke dwc3removerequests. This patch addresses a race condition caused by unsynchronized execution of multiple call paths that invoke dwc3removerequests, leadi...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: exFat: Fix for improper checking of dentry.stream.validsize We identified a infinite loop bug in the exFAT file system that can lead to a Denial-of-Service DoS condition. When a dentry in an exFAT filesystem is malformed, the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nvdimm: The memory pointed to by ndpmu-pmu.attrgroups is allocated in the function registernvdimmpmu, and it is lost after the kfreendpmu call in the function unregisternvdimmpmu...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cifs: preventing use-after-free by freeing the cfile later. In smb2compoundop, there is a potential use-after-free that may lead to difficult debugging issues in the future. This issue was identified during stress testing with th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: A possible infinite loop has been fixed in fib6infousesdev. fib6infousesdev appears to rely on RCU without proper protection. Similar to the previous fix in rt6nlmsgsize, we need to ensure that fib6delroute or fib6addrt2nod...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: irqchip/sifive-plic: Fixed the issue where frozen interrupts occurred due to incorrect affinity settings. The PLIC ignores interrupt completion messages for disabled interrupts, according to the specification: The PLIC indicates...

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

In the Linux kernel, the following vulnerabilities have been resolved: netrom: A memory leak was fixed in nrheartbeatexpiry. syzbot reported a memory leak in nrcreate. The commit 409db27e3a2e “netrom: Fixed a use-after-free of a listening socket” added sockhold to the nrheartbeatexpiry function. ...

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: cadence: macb: Fixed a possible deadlock in macbhalttx. There is a situation where, after THALT is set to a high value, TGO also remains high. Since the jiffies values are never updated, and we are in a context with interrup...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs: dropping peer group IDs under namespace lock When cleaning up peer group IDs in the failure path, we need to ensure that the namespace lock is retained. Otherwise, another thread might simultaneously change the mount status...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net: wwan: Fixed a global out-of-bounds read in wanrtnlpolicy. The variable wanrtnllinkops assigns a larger value to maxtype, leading to a global out-of-bounds read when parsing netlink attributes. This is exactly the same bug...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: removing redundant scheduler job cleanup when CS aborts. When command submission fails due to an invalid userptr in amdgpucssubmit, legacy code will perform cleanup of scheduler jobs. However, this is completely...

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

In the Linux kernel, the following vulnerability has been resolved: f2fs: fixed to not dirty the inode for a read-only filesystem. The syzbot reports the f2fs bug as follows: Kernel BUG at fs/f2fs/inode.c:933! RIP: 0010:f2fsevict inode+0x1576/0x1590 fs/f2fs/inode.c:933 Call Trace: evict+0x2a4/0x6...

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

In the Linux kernel, the following vulnerability has been resolved: fbdev: sis: An error will occur if pixclock equals zero. The user-space program can pass any values to the driver through the ioctl interface. If the driver does not check the value of pixclock, it may lead to a divide-by-zero...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ipv4: Fixed a data race related to the sysctlfibsyncmem function. When reading sysctlfibsyncmem, it can be changed concurrently. Therefore, we need to add READONCE to avoid the data race...

Astra Linux – Vulnerability in Linux 5.15, Linux

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: rndis: prevent integer overflow in rndissetresponse If “BufOffset” is very large, the operation “BufOffset + 8” may lead to an integer overflow...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Memory leaks have been fixed in checkfunccall. kmemleak reports this issue: Unreferenced object 0xffff88817139d000 size 2048: comm "testprogs", pid 33246, jiffies 4307381979 age 45851.820s Hex dump first 32 bytes: 01 00 0...