Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Do not leave a dangling sk pointer after an error in l2capsockcreate. The btsockalloc function allocates the sk object and attaches it to the provided sock object. If an error occurs in l2capsockalloc, the sk...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: RFCOMM: Avoid leaving a dangling sk pointer in rfcommsockalloc. The btsockalloc function attaches the allocated sk object to the provided sock object. If rfcommdlcalloc fails, we release the sk object, but leave a...

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...

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: 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: s390/iucv: MSGPEEK causes a memory leak in iucvsockdestruct. Passing the MSGPEEK flag to skbrecvdatagram increments the skb refcount skb-users, while iucvsockrecvmsg does not decrement the skb refcount at exit. This results in a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: Fixed the skmemuncharge logic in tcpbpfsendmsg. The current sk memory accounting logic in SKREDIRECT involves pre-charging bytes to be sent, where the value is either msg-sg.size or a smaller value, applybytes. Potential...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: afcan: Do not leave a dangling sk pointer in cancreate. When the cancreate function fails, it releases the allocated sk object. However, sockinitdata has already attached this object to the provided sock object. This will...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: inet6: Do not leave a dangling sk pointer in inet6create. sockinitdata attaches the allocated sk pointer to the provided sock object. If inet6create fails later, the sk object is released, but the sock object retains the...

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: RDMA/rxe: Fixed a segmentation fault in rxecompqueuepkt. In rxecompqueuepkt, an incoming response packet is enqueued into the resppkts queue. Then, it is decided whether to run the completer task inline or schedule it. Finally, t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ipvlan: Do not use skb-sk in ipvlanprocessv4,6outbound Raw packets from the PFPACKET socket on an IPv6-backed ipvlan device will trigger WARNONONCE in skmcloop, through the schdirectxmit path. WARNING: CPU: 2 PID: 0 at...

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: 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 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 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: 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: 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 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...