Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: TX zerocopy should not access the pfmemalloc status. We received a recent syzbot report 1 indicating a possible misuse of the page status in TCP zerocopy paths. Indeed, for pages originating from user space or other layers,...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: - dm integrity: Fixed a UAF Use-after-Free in dmintegritydtr. - dmintegrity also has the same UAF problem when dmresume and dmdestroy are executed concurrently. Therefore, the timer is canceled again in dmintegritydtr...

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: ftrace: The function that reads filter files now allocates and copies the hash required for this purpose. Currently, the functions setftracefilter and setftracenotrace simply add a pointer to the global tracer hash to their...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: media: staging/intel-ipu3: A memory leak has been fixed in imufmt. We are no longer losing a reference to an allocated memory when trying to use it. We’ve changed the order of the checks to avoid that issue...

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

In the Linux kernel, the following vulnerability has been resolved: padata: A possible “divide-by-0” panic has been fixed in padatamthelper. We are encountering a “divide-by-0” panic in padata.c during bootup. 10.017908 Oops: Divide error: 0000 1 PREEMPT SMP NOPTI 10.017908 CPU: 26 PID: 2627 Comm...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw: dmamux: fixed the issue of a memory leak in the OF node during route allocation failures. Make sure that the reference to the DMA master OF node is also removed during late route allocation failures...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ocfs2: fixed a memory leak in ocfs2stackglueinit The ocfs2tableheader should be freed in ocfs2stackglueinit if ocfs2sysfsinit fails; otherwise, kmemleak will report a memory leak. BUG: Memory leak Unreferenced object...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: hfsplus: prevented corruption during the shrinking of truncate operations. I believe there are some issues introduced by commit 31651c607151 “hfsplus: avoided deadlock during file truncation”. HFS+ uses extent records, which alwa...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid use-after-free in ext4extshowleaf In ext4findextent, the path may be freed by an error or reallocated. Therefore, using a previously saved ppath may have already been freed, thereby potentially causing a use-after-fre...

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

In the Linux kernel, the following vulnerability has been resolved: Bonding: Fix for xfrm realdev null pointer dereference We should not set realdev to NULL, because packets may still be in transit, and xfrm might call xdodevoffloadok in parallel. All callbacks assume that realdev is set. Example...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cifs: parsedfsreferrals: prevents out-of-bounds access on malformed inputs A malicious SMB server can send invalid responses to FSCTLDFSGETREFERRALS. - The response is smaller than sizeofstruct getdfsreferralrsp. - The number of...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bonding: Limit BONDMODE8023AD to Ethernet devices. BONDMODE8023AD is meaningful only for ARPHRDETHER. syzbot reported: BUG: KASAN: Global-out-of-bounds in hwaddrcreate net/core/devaddrlists.c:63 inline BUG: KASAN:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ARM: OMAP2+: Fixed a refcount leak in oprsdssinitof. In omapdssfinddssofnode, the function offindcompatiblenode is called to obtain a device node. offindcompatiblenode returns a node pointer with a refcount incremented; we...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: md: Replace snprintf with scnprintf The current code produces a warning when the total number of characters in the constituent block device names, plus the slashes, exceeds 200. snprintf returns the number of characters generated...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: drm/msm/adreno: Fixed access to a null pointer in adrenogpucleanup Fixed the kernel panic caused by accessing a null pointer: 18.504431 Unable to handle a NULL pointer derefrence at the virtual address 0000000000000048 18.5134...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: xdp, net: Fix use-after-free in bpfxdplinkrelease The problem occurs between devgetbyindex and devxdpattachlink. At this point, devxdpuninstall is called. Then xdp link will not be detached automatically when dev is released. But...

Astra Linux – Vulnerability in Linux

JIT compilers in the Linux kernel from version 5.11.12 have incorrect calculations of branch displacements, allowing them to execute arbitrary code within the kernel context. This issue affects the files arch/x86/net/bpfjitcomp.c and arch/x86/net/bpfjitcomp32.c...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: qlogic: qlcnic: A NULL pointer dereference was fixed in qlcnic83xxaddrings. In qlcnic83xxaddrings, the indirect function ahw-hwops-allocmbxargs is called to allocate memory for cmd.req.arg. A dereference of this variable...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Tracing: Free buffers when a used dynamic event is removed After 65536 dynamic events have been added and removed, the “type” field of the event uses the first available type number which is not currently used by other events. A...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tty: vt: initialize unicode screen buffer The syzbot report indicates a kernel vulnerability at the vcsread function 1. The buffer can be read immediately after the resizing operation. Initialize the buffer using kzalloc...