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

In the Linux kernel, the following vulnerability has been resolved: f2fs: The issue was fixed by dropping all dirty pages during umount if cperror is set. The xfstest generic/361 report indicates a bug as follows: f2fsbugonsbi, sbi-fsyncnodenum; Kernel bug located at fs/f2fs/super.c:1627! RIP:...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: ALSA: usx2y – Do not call freepagesexact with a NULL address. Unlike some other functions, we cannot pass a NULL pointer to freepagesexact. Add a proper NULL check to avoid potential errors...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm/mminit: Fixed the issue where uninitialized struct pages were used for ZONEDEVICE. If DAX memory is hot-plugged into an unoccupied subsection of an early section, sectionactivate reuses the unoptimized boot memmap. However,...

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: mm: vmscan: accounts for free pages to prevent infinite loops in throttledirectreclaim. The task sometimes continues looping in throttledirectreclaim because allowdirectreclaimpgdat keeps returning false. The stack trace is as...

Astra Linux – Vulnerability in Chromium

The "Type Confusion in Bindings" vulnerability in Google Chrome before version 149.0.7827.103 allowed a remote attacker to execute arbitrary code within a sandbox through a crafted HTML page. Chromium security severity: High...

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

In the Linux kernel, the following vulnerability has been resolved: mm/swapfile: condresched was added to getswappages. A softlockup still occurs in getswappages under memory pressure. With 64 CPU cores, 64GB of memory, and 28 zram devices, the size of each zram device is 50MB, and they all have...

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: Added a missing check for inode numbers in directory entries. Syzbot reported that mounting and unmounting a specific pattern of corrupted Nilfs2 filesystem images causes a use-after-free of metadata file inodes, which...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Pages may be leaked if setmemoryencrypted fails. In CoCo VMs, it is possible for the untrusted host to cause setmemoryencrypted or setmemorydecrypted to fail, resulting in an error and the shared memory being...

Astra Linux – Vulnerability in Firefox, Thunderbird

If a PAC URL was set, and the server hosting the PAC was unreachable, OCSP requests would be blocked, resulting in incorrect error pages being displayed. This vulnerability affects Firefox 102, Firefox ESR 91.11, Thunderbird 102, and Thunderbird 91.11...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: x86/sgx: Prevents attempts to reclaim poisoned pages TL;DR: In SGX, when pages are reclaimed, their contents are copied to secondary storage. SGX instructions do not properly handle machine checks. Nevertheless, existing SGX code...

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

Linux block and network PV device frontends do not zero memory regions before sharing them with the backend CVE-2022-26365, CVE-2022-33740. Additionally, the granularity of the grant table does not allow sharing smaller than a 4K page, resulting in unrelated data residing in the same 4K page as...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: compress: fixed to avoid a use-after-free condition on dic. Call trace: memcpy+0x128/0x250 f2fsreadmultipages+0x940/0xf7c f2fsmpagereadpages+0x5a8/0x624 f2fsreadahead+0x5c/0x110 pagecacheraunbounded+0x1b8/0x590...

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

In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: independent PMD page table shared count The refcount of the folio may be unexpectedly increased through functions like trygetfolio, such as splithugepages. In hugepmdunshare, we use the refcount to check whether a PM...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: In the mm/pagealloc function, the clearpage-private operation is performed in freepagesprepare. Several subsystems slub, shmem, ttm, etc. use page-private, but they do not clear it before freeing pages. When these pages are later...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm: Use memallocnofssave in pagecacheraorder. See commit f2c817bed58d “mm: Use memallocnofssave in readahead”, ensure that pagecacheraorder does not attempt to reclaim file-backed pages too often, as this can lead to a deadlock...

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

In the Linux kernel, the following vulnerability has been resolved: VMCI: fixed a race condition between vmcihostsetupnotify and vmcictxunsetnotify. During our testing, it was found that a warning can occur in trygrabfolio. The detailed error message is as follows: ----------- Cut here ----------...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm: pagealloc: moving the mlocked flag to freepagesprepare Syzbot reported a problem with bad page state caused by a page being freed using freepage, while the mlocked flag is still present during the freepagesprepare stage: BUG:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: VDUSE: Avoid leaking information to userspace. The bouncing of memory pages does not necessarily require page alignment; therefore, current VDUSE may still leak kernel information by mapping bounce pages to userspace. Allocate...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bootmem: The vmemmap pages are removed from kmemleak when freeing the page. These pages were previously marked as part of kmemleak when allocated from a memblock. Removing them from kmemleak ensures that errors related to thes...