Astra Linux – Vulnerability found in Linux 6.1, Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: RFCOMM: No fix to ensure that user input is validated before setting the setsockopt function. The syzbot reported that the rfcommsocksetsockoptold function copies data without checking the length of the user input...

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

In the Linux kernel, the following vulnerabilities have been resolved: tls: fixed the missing memory barrier in tlsinit In tlsinit, a write memory barrier is missing, and store-store reordering may cause NULL dereferencing in tlssetsockopt,getsockopt. CPU0 CPU1 ----- ----- // In tlsinit // In...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ax25: The refcount leak caused by setting the SOBINDTODEVICE socket option has been fixed. If an AX25 device is bound to a socket by setting the SOBINDTODEVICE socket option, a refcount leak will occur in ax25release. The commit...

CVE-2026-72456

In the Linux kernel, the following vulnerability has been resolved: apparmor: release exe file resources on path failure getcurrentexepath takes both an exefile reference and a path reference before resolving the path name. If aapathname failed, it returned immediately and leaked both references...

SUSE CVE-2026-68387

In the Linux kernel, the following vulnerability has been resolved: can: raw: add locking for raw flags bitfield With commit 890e5198a6e5 "can: raw: use bitfields to store flags in struct rawsock" the formerly separate integer values have been integrated into a single bitfield. This led to a...

EUVD-2026-45744

In the Linux kernel, the following vulnerability has been resolved: sctp: fix race between sctpwaitforconnect and peeloff sctpwaitforconnect drops and re-acquires the socket lock while waiting for the association to reach ESTABLISHED state. During this window, another thread can peeloff the...

CVE-2026-53274

CVE-2026-53274 affects the Linux kernel net/smc code. A logic flaw in __smc_setsockopt() allowed a local unprivileged user to cause a Denial of Service by keeping the socket lock held during a copy_from_sockptr() operation. The vulnerability occurs because the copy is performed while holding lock...

EUVD-2026-39225

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix sleep-inside-lock in smcsetsockopt causing local DoS A logic flaw in smcsetsockopt allows a local unprivileged user to cause a Denial of Service DoS by holding the socket lock indefinitely. The function smcsetsockopt...

CVE-2026-53004 sctp: fix OOB write to userspace in sctp_getsockopt_peer_auth_chunks

In the Linux kernel, the following vulnerability has been resolved: sctp: fix OOB write to userspace in sctpgetsockoptpeerauthchunks sctpgetsockoptpeerauthchunks checks that the caller's optval buffer is large enough for the peer AUTH chunk list with if len gauthchunks, which lives at offset...

mptcp: fix scheduling with atomic in timestamp sockopt

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SUSE CVE-2026-46168

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using locksockfast atomic context around socksettimestamp and socksettimestamping is unsafe, as both helpers can sleep. Replace locksockfast with sleepable locksock/releaseso...

CVE-2026-46168

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using locksockfast atomic context around socksettimestamp and socksettimestamping is unsafe, as both helpers can sleep. Replace locksockfast with sleepable locksock/releaseso...

UBUNTU-CVE-2026-43411

In the Linux kernel, the following vulnerability has been resolved: tipc: fix divide-by-zero in tipcskfilterconnect A user can set conntimeout to any value via setsockoptTIPCCONNTIMEOUT, including values less than 4. When a SYN is rejected with TIPCERROVERLOAD and the retry path in...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-011294)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011294 advisory. In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005059)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005059 advisory. In the Linux kernel, the following vulnerability has been resolved: xsk: validate user input for XDPUMEM|COMPLETIONFILLRING syzbot reported an illegal copy in...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001251)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001251 advisory. An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land an...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002784)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002784 advisory. An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land an...

UBUNTU-CVE-2023-53839

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

kernel: udp: Fix memory accounting leak.

A memory overflow vulnerability exists within the Linux kernel's networking subsystem. Specifically, an application can set the SORCVBUF socket option to its maximum value INTMAX, which triggers an integer overflow within the udprmemrelease function during socket closure. The udpdestructcommon...

CVE-2025-40149

In the Linux kernel, the following vulnerability has been resolved: tls: Use skdstget and dstdevrcu in getnetdevforsock. getnetdevforsock is called during setsockopt, so not under RCU. Using skdstgetsk-dev could trigger UAF. Let's use skdstget and dstdevrcu. Note that the only -ndoskgetlowerdev...