Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Allow deletion from sockmap/sockhash only if updating is allowed. We have received a surge in reports from syzkaller instances where a BPF program attached to a tracepoint triggered a locking rule violation by performing a...

Astra Linux – Vulnerability in Waitress

Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before Waitress has had the opportunity to call getpeername, Waitress will not properly clean up the connection. As a result, the main thread attempts to write to a socket that no long...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: The initialization of the dangling pointer that occurs in vsk-trans has been addressed. During loopback communication, a dangling pointer can be created in vsk-trans, potentially leading to a Use-After-Free conditio...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: octeonep: Added handling of SKB allocation failures in octepoqprocessrx. The buildskb function returns NULL in case of a memory allocation failure. Therefore, this behavior should be handled within octepoqprocessrx to prevent NUL...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Fou: Fixed the null-ptr-deref in GRO. We observed a null-ptr-deref in fougroreceive while shutting down a host. 0 The NULL pointer is sk-skuserdata, and the offset 8 represents the protocol field in the struct fou structure. When...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: sunrpc: Clearing the XPRTSOCKUPDTIMEOUT when resetting the transport. Since the transport-sock has been set to NULL during the reset of the transport, the XPRTSOCKUPDTIMEOUT also needs to be cleared. Otherwise, the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: tipc: Fixed a use-after-free in the kernel socket during the cleanupbearer function. syzkaller reported a use-after-free of the UDP kernel socket in cleanupbearer. This issue occurred without any reprovisioning. When the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: tcp/dccp: Do not use timerpending in reqskqueueunlink. Martin KaFai Lau reported a use-after-free in reqsktimerhandler. We are encountering a use-after-free related to a bpf program attached to tracetcpretransmitsynack. The...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: IEEE802154: Do not leave a dangling SK pointer in ieee802154create. sockinitdata attaches the allocated SK object to the provided sock object. If ieee802154create fails later, the allocated SK object is freed, but the dangli...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: SCO: Fixed UAF on scosocktimeout The conn-sk might have been unlinked/freed while waiting for scoconnlock. Therefore, this check determines whether conn-sk is still valid by verifying that it is part of scosklist...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Net: Restrict SOREUSEPORT to inet sockets. After the bug was identified, crypto sockets could accidentally be destroyed due to a RCU call back, as discovered by zyzbot 1. Attempting to acquire a mutex in an RCU callback is not...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: atm: idt77252: prevent use after free in dequeuerx We cannot dereference “skb” after calling vcc-push, because the skb is released...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: virtio/vsock: Fix acceptqueue memory leak As the final stages of socket destruction may be delayed, it is possible that virtiotransportrecvlisten will be called after the acceptqueue has been flushed, but before the SOCKDONE flag...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: relaxed the check on socket state during the accept process. Christoph reported the following error: WARNING: CPU: 1 PID: 772 at net/ipv4/afinet.c:761 inetaccept+0x1f4/0x4a0 Linked modules: CPU: 1 PID: 772 Comm:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/smc: Check the return value of sockrecvmsg when draining CLC data. When receiving a CLC message, the field fieldlength in smcclcmsghdr indicates the length of the message that should be received from the network. This value...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: Missing check for virtio Two missing checks in virtionethdrtoskb allowed syzbot to crash kernels again. 1. After the skbsegment function, the buffer may become non-linear nrfrags != 0. However, since the SKBTXSHAREDFRAG...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bluetooth/l2cap: syncsock recvcb and release operations. The issue arises between the system call to close the socket and the hcirxwork function. In this process, the former releases the socket, while the latter accesses it witho...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remapping EPERM in case of connection failure in xstcpsetupsocket. When using a BPF program on kernelconnect, the call may return -EPERM. This causes xstcpsetupsocket to loop indefinitely, filling up the syslog and...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix the issue of failing to release the skbuff in seg6inputcore. The seg6input function is responsible for adding the SRH into a packet, delegating this operation to seg6inputcore. This function uses skbcowhead to ensur...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: In the bcm function, there was an issue where bo-bcmprocread was cleared after the removeprocentry function was called. The syzbot tool reported a warning in the bcmrelease function. The bug fix addressed another warning that...