Astra Linux – Vulnerability in Linux 5.10, Linux

There is a use-after-free vulnerability in the Linux Kernel that can be exploited to achieve local privilege escalation. To exploit this vulnerability, the CONFIGTLS or CONFIGXFRMESPINTCP kernel configuration flags must be set; however, the operation does not require any special privileges. There...

Astra Linux – Vulnerability in Linux, Linux 5.10

A memory flaw after deallocation was discovered in the Linux kernel’s garbage collection for Unix domain socket file handlers. This flaw occurs when users call close and fget simultaneously, potentially triggering a race condition. This flaw allows a local user to crash the system or escalate the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: In the net subsystem, a leak in the skbtstamptx function was fixed. Commit 50749f2dd685 “tcp/udp: Fixed memory leaks in sk and zerocopy skbs during TX timestamping” added a call to skborphanfragsrx, to fix leaks related to zeroco...

Astra Linux – Vulnerability in Redis

Redis is an in-memory database that persists data on disk. Upon startup, Redis begins listening on Unix sockets before adjusting its permissions to the configuration provided by the user. If a permissive umask value is used, this can create a race condition that allows another process to establis...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mptcp: The “kern” flag was removed from fallback sockets. The mptcp ULP extension relies on ensuring that sk-sksockkern is set correctly. This prevents the call to setsockoptfd, IPPROTOTCP, TCPULP, "mptcp", 6 from working for pla...

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

A vulnerability was discovered in the HCI socket implementation due to a missing capability check in the net/bluetooth/hcisock.c file within the Linux kernel. This flaw allows an attacker to execute management commands without authorization, compromising the confidentiality, integrity, and...

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

The IPv6 implementation in the Linux kernel before version 6.3 has a maxsize threshold in the net/ipv6/route.c file that can be easily exceeded. This can lead to a denial of service condition, where the network becomes unreachable, resulting in errors when IPv6 packets are sent through a raw sock...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: afunix: fix use-after-free in unixstreamreadactor syzbot reported the following crash 1 After releasing unix socket lock, u-oobskb can be changed by another thread. We must temporarily increase skb refcount to make sure this othe...

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: TCP: Timers for kernel sockets are properly terminated. We received various reports from syzbot that indicated that TCP timers would still fire even after the corresponding netns has been dismantled. Fortunately, Josef Bacik was...

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: bpf: Reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: c sk = somelookupfunc bpfskassignskb, sk bpfskreleasesk That is, the sk is not consumed by bpfskassign. Therefore, the function must ensure...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: Fix the UaF issue in listener shutdown According to Christoph’s report after refactoring the passive socket initialization, the mptcp listener shutdown path is vulnerable to a UaF issue. BUG: KASAN: Use-after-free in...

Astra Linux – Vulnerability in Firefox and Thunderbird

A use-after-free condition affected the creation of TLS sockets when memory pressure was present. This vulnerability affects Firefox ESR 115.6, Thunderbird 115.6, and Firefox 121...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring/afunix: disabling the sending of iouring via sockets File reference cycles have caused many problems for iouring in the past. It still doesn’t work correctly, and it causes races with unixstreamreadgeneric. The safest...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Handling deconfigured sockets When a socket is deconfigured, it is mapped to SOCKEMPTY 0xffff. This causes a panic during the allocation of UV hub info structures. This issue has been fixed by using NUMANONODE,...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Rejects redirects of skmsg messages to non-TCP sockets With a SOCKMAP/SOCKHASH map and a skmsg program, users can direct messages sent from one TCP socket s1 to actually exiting from another TCP socket s2...

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: afunix: Fixed the garbage collector’s race condition with connect The garbage collector does not consider the risk of an “embryo” being enqueued during garbage collection. If such an “embryo” has a peer that carries SCMRIGHTS, tw...

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...

Astra Linux – Vulnerability in Linux

A race condition in Linux kernel SCTP sockets net/sctp/socket.c before version 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If the sctpDestroySock function is called without using the socknetsk-sctp.addrwqlock lock, an element...

Astra Linux – Vulnerability in Flatpak

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak applications that had direct access to AFUNIX sockets—such as those used by Wayland, Pipewire, or pipewire-pulse—could trick portals and other host-...

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

In the Linux kernel, the following vulnerabilities have been resolved: afunix: Fixed data races related to sk-skshutdown. KCSAN identified a data race involving sk-skshutdown, where functions like unixreleasesock and unixshutdown update the variable under unixstatelock; additionally, unixpoll and...