acp-framework-en

ACP — Agent Control Protocol Admission control for agent actions. Before any agent mutates system state, ACP answers four questions: Who is this agent? What are they authorized to do? Is this action policy-compliant? Can the outcome be traced to an accountable institution? Cryptographic identity ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: SCTP: Fixed a memory leak in sctpstreamoutqmigrate. When sctpstreamoutqmigrate is called to release resources related to streamouts, the memory pointed to by priohead in the streamout context is not released properly. The details...

Astra Linux – Vulnerability in Linux 5.15

The Linux kernel’s NFSD implementation before versions 5.19.17 and 6.0.2 is vulnerable to buffer overflow attacks. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call RPC into a single array of pages. A client can force the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nvmet: The cqe.result field must always be initialized. The specification does not require that the first two double-word values i.e., the “results” for a command queue entry need to be set to 0 when they are not used this is not...

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

In the Linux kernel, the following vulnerability has been resolved: TCP: Do not accept ACKs for bytes that we never sent. This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. The validation of ACK sequences currently follows the guidelines outlined in RFC 5961,...

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

A vulnerability was identified in the Linux Kernel versions up to 4.19.316/5.4.278/5.10.220/5.15.161. This affects the tcpgetsockopt/tcpsetsockopt functions of the TCP Handler component. Such manipulation leads to a race condition. This attack involves a high level of complexity. The vulnerabilit...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: TCP: Added sanity tests to TCPQUEUESEQ Qingyu Li reported a syzkaller bug where the repro function changed the RCV SEQ after restoring data in the receive queue. mprotect0x4aa000, 12288, PROTREAD = 0 mmap0x1ffff000, 4096, PROTNON...

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

In the Linux kernel, the following vulnerabilities have been resolved: sctp: Linearize cloned GSO packets in sctprcv. The cloned headskb still shares these frag SKBs in the fraglist with the original headskb. Accessing these frag SKBs is not safe. syzbot reported two bugs caused by the use of...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Net: Properly handles tunneled traffic when using GSO fallback for IPV6CSUM. NETIFFIPV6CSUM only indicates support for packet checksum offloading without IPv6 extension headers. Packets with extension headers must rely on...

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

A out-of-bounds read vulnerability was discovered in the NVMe-oF/TCP subsystem within the Linux kernel. This issue may allow a remote attacker to send a specially crafted TCP packet, triggering a heap-based buffer overflow. As a result, data from kmalloc will be printed, and it may also be leaked...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tcp: tcprtxsynack can be called from process context Laurent reported the enclosed report 1 This bug triggers under the following conditions: 0 The kernel is built with CONFIGDEBUGPREEMPT=y 1 A new passive FastOpen TCP socket is...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Use callrcu to free endpoints This patch delays the endpoint freeing process by calling callrcu, in order to address another use-after-free issue in sctpsockdump: BUG: KASAN: Use-after-free in lockacquire+0x36d9/0x4c20...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialize rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported a divide-by-zero issue in tcpselectWindow for MPTCP sockets. 0 We had a similar issue with bare TCP and fixed it in commit 499350a5a6...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nvme: tcp: avoid race between queuelock lock and destroy Commit 76d54bf20cdc "nvme-tcp: don’t access released sockets during error recovery" added a mutexlock call for the queue-queuelock in nvmetcpgetaddress. However, the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nbd: restricts sockets to TCP and UDP Recently, syzbot began abusing NBD using various types of sockets. The commit cf1b2326b734 “nbd: verify that sockets are supported during setup” ensured that the socket supported a shutdown...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A null pointer dereference issue was discovered in the SCTP network protocol within the net/sctp/streamsched.c file in the Linux kernel. If the streamin allocation fails, the streamout resource is freed, allowing further access to it. A local user could exploit this vulnerability to crash the...

Astra Linux – Vulnerability in connman

A issue was discovered in the DNS proxy of Connman through version 1.40. The implementation of the TCP server’s reply mechanism lacks a check to ensure that there is sufficient Header Data, resulting in an out-of-bounds read...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: added accessors to read/set tp-sndcwnd. Over the years, we’ve had various bugs in the code that broke the assumption that tp-sndcwnd is greater than zero. Recently, syzbot reported that the condition WARNONONCE!tp-priorcwnd...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mptcp: A stricter state check has been added in mptcpworker. According to Christoph, the mptcp protocol can run the worker when the relevant msk socket is in an unexpected state: c connect // Incoming reset + fastclose // The mpt...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Net: Ethernet: Cortina: Use TOE/TSO for all TCP protocols. It is desirable to enable the hardware accelerator to also process non-segmented TCP frames. We can pass the skb-len value to the “TOE/TSO” offloader, which will handle...