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: xhci: Error handling was added in xhcimapurbfordma. Currently, xhcimapurbfordma creates a temporary buffer and copies the SG list to the new linear buffer. However, if kzallocnode fails, the call to sgpcopytobuffer may lead ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ovl: Fixed a NULL pointer dereference issue in the copy-up warning message. This patch addresses a NULL pointer dereference that caused a recently introduced warning message to fail...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ovpn: TCP – fix for extracting packets from the stream When processing TCP stream data in ovpntcprecv, we receive large cloned skbs from strprcv, which may contain multiple coalesced packets. The current implementation has two...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: RISCV: Misaligned – Restricts user access to kernel memory. The rawcopyto,fromuser function does not call accessok, allowing userspace to access any virtual memory address...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: TCP: Handle the mixed splice/sendmsgMSGZEROCOPY case syzbot found that mixing calls to sendpage and sendmsgMSGZEROCOPY using the same TCP socket would trigger the infamous warning in inetsockdestruct. c WARNONskforwardallocgetsk;...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fixed a mismatch in the function prototype in sndseqexpandvarevent. With Clang’s Kernel Control Flow Integrity kCFI, CONFIGCFICLANG, indirect call targets are validated against the expected function pointer prototype t...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fixed a UAF in ieee80211scanrx The ieee80211scanrx function attempts to access scanreq-flags after a null check. However, a UAF Use-after-Allocation was observed when the scan is completed and ieee80211scancomplet...

Astra Linux – Vulnerability in libarchive

In libarchive versions 3.4.1 through 3.5.1, there is a use-after-free in the copystring function called from douncompressblock and processblock...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The use-of-memory issue was fixed by using callrcu for oplockinfo. Currently, ksmbd frees oplockinfo immediately using kfree, even though it is accessed during critical sections of the RCU read-side, such as in functions...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: State corruption has been prevented in fpurestoresig. The non-compacted slowpath uses copyfromuser to copy the entire user buffer into the kernel buffer, verbatim. This means that the kernel buffer may now contain entire...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read from and write to shared, unencrypted memory directly. This may lead to the leakage of information, as well as allowing the host to tamper with the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: block: RCU protection for disk-convzonesbitmap It is ensured that revalidating a disk by changing the conventional zones bitmap does not cause invalid memory references when using the helper function diskzoneisconv, with RCU...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: CFI: Fixed the use of cfislowpathdiag with cpuidle. The use of RCUNONIDLE during cfislowpathdiag can result in an invalid RCU state in the cpuidle code path. WARNING: CPU: 1, PID: 0, at kernel/rcu/tree.c:613, rcueqsenter+0xe4/0x1...

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

In the Linux kernel, the following vulnerabilities have been resolved: rcu: Dump vmalloc memory info safely Currently, for double invoke callrcu, the memory information of rcuhead objects will be dumped. If these objects are not allocated using the slab allocator, vmallocdumpobj will be invoked,...

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

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fixed a memory leak when insertoldidx failed. The following process will cause a memory leak for the copied znode: dirtycowznode zn = copyznodec, znode; err = insertoldidxc, zbr-lnum, zbr-offs; if unlikelyerr return...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: xsk: The recycle buffer was handled in cases where the Rx queue was full. A missing call to xskbufffree was added when xskrcvzc failed to produce a descriptor for the XSK Rx queue...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: ti: icssg-prueth: Fixed a memory leak in XDPDROP for the non-zero-copy mode. Page recycling was removed from the XDPDROP path in emacrunxdp to avoid conflicts with the AFXDP zero-copy mode, which uses xskbufffree instead...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: f2fs: Synchronize atomic write aborts To address the race condition between atomic write aborts, I use the inode lock and ensure that the COW inode can be reused throughout the entire lifetime of the atomic file inode...

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

In 64-bit versions of the Linux kernel, Copyfromuser does not implement uaccessbeginnospec, which allows a user to bypass the “accessok” check and pass a kernel pointer to copyfromuser. This would enable an attacker to leak sensitive information. We recommend upgrading beyond commit...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: raw: Fixed NULL dereference in rawgetnext. Dae R. Jeong reported a NULL dereference in rawgetnext. It seems that the reproduction test was running these sequences in parallel, so one thread was iterating over a socket that was...