Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net/smc: Fixed the LGR and link use-after-free issue. We encountered a use-after-free issue with the LGR/link reference count. This issue manifested when the LGR/link reference count reached 0 prematurely and entered a clearin...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: RFCOMM: Fixed a possible deadlock in rfcommskstatechange. rfcommskstatechange attempts to use socklock, so it should never be called with it locked. However, rfcommsockioctl always attempts to lock it, causing the...

SUSE CVE-2024-54191

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in isoconnbigsync This fixes the circular locking dependency warning below, by reworking isosockrecvmsg, to ensure that the socket lock is always released before calling a function that locks hde...

SUSE CVE-2024-54460

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in isolistenbis This fixes the circular locking dependency warning below, by releasing the socket lock before enterning isolistenbis, to avoid any potential deadlock with hdev lock. 75.307983...

CVE-2024-54191

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in isoconnbigsync This fixes the circular locking dependency warning below, by reworking isosockrecvmsg, to ensure that the socket lock is always released before calling a function that locks hde...

UBUNTU-CVE-2024-54191

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in isoconnbigsync This fixes the circular locking dependency warning below, by reworking isosockrecvmsg, to ensure that the socket lock is always released before calling a function that locks hde...

CVE-2024-54460 Bluetooth: iso: Fix circular lock in iso_listen_bis

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in isolistenbis This fixes the circular locking dependency warning below, by releasing the socket lock before enterning isolistenbis, to avoid any potential deadlock with hdev lock. 75.307983...

CVE-2024-54191 Bluetooth: iso: Fix circular lock in iso_conn_big_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Fix circular lock in isoconnbigsync This fixes the circular locking dependency warning below, by reworking isosockrecvmsg, to ensure that the socket lock is always released before calling a function that locks hde...

DEBIAN-CVE-2024-56640

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix LGR and link use-after-free issue We encountered a LGR/link use-after-free issue, which manifested as the LGR/link refcnt reaching 0 early and entering the clear process, making resource access unsafe. refcountt:...

CBL Mariner 2.0 Security Update: kernel (CVE-2024-49946)

"The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-49946 advisory. - In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in...

kernel: inet: read sk->sk_family once in inet_recv_error()

In the Linux kernel, the following vulnerability has been resolved: inet: read sk-skfamily once in inetrecverror inetrecverror is called without holding the socket lock. IPv6 socket could mutate to IPv4 with IPV6ADDRFORM socket option and trigger a KCSAN warning...

DEBIAN-CVE-2024-50044

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: FIX possible deadlock in rfcommskstatechange rfcommskstatechange attempts to use socklock so it must never be called with it locked but rfcommsockioctl always attempt to lock it causing the following trace:...

CVE-2022-49018

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix sleep in atomic at close time Matt reported a splat at msk close time: BUG: sleeping function called from invalid context at net/mptcp/protocol.c:2877 inatomic: 1, irqsdisabled: 0, nonblock: 0, pid: 155, name:...

CVE-2024-49946

CVE-2024-49946 affects the Linux kernel PPP stack. The issue arises in ppp_channel_bridge_input() when packets are backlogged to a socket owned by a user process and the code path can call sk_backlog_rcv()/__release_sock()/release_sock() in process context. This creates an inconsistent lock state...

CVE-2024-49946 ppp: do not assume bh is held in ppp_channel_bridge_input()

In the Linux kernel, the following vulnerability has been resolved: ppp: do not assume bh is held in pppchannelbridgeinput Networking receive path is usually handled from BH handler. However, some protocols need to acquire the socket lock, and packets might be stored in the socket backlog is the...

kernel: Bluetooth: af_bluetooth: Fix deadlock

A flaw was found in the Linux kernel’s Bluetooth subsystem, specifically within the afbluetooth module. The issue arises when attempting to perform a socklock on the .recvmsg method, leading to a deadlock situation. In this scenario, multiple tasks wait indefinitely for a resource, causing...

kernel: Bluetooth: af_bluetooth: Fix deadlock

A flaw was found in the Linux kernel’s Bluetooth subsystem, specifically within the afbluetooth module. The issue arises when attempting to perform a socklock on the .recvmsg method, leading to a deadlock situation. In this scenario, multiple tasks wait indefinitely for a resource, causing...

DEBIAN-CVE-2023-52772

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...

CVE-2023-52772 af_unix: fix use-after-free in unix_stream_read_actor()

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...

CVE-2021-47248 udp: fix race between close() and udp_abort()

In the Linux kernel, the following vulnerability has been resolved: udp: fix race between close and udpabort Kaustubh reported and diagnosed a panic in udpliblookup. The root cause is udpabort racing with close. Both racing functions acquire the socket lock, but udpv6destroysock release it before...