Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: Fixed the issue where no check was performed to determine whether skb actually contained an ACL header. Otherwise, the code might attempt to access uninitialized/invalid memory beyond the valid skb-data...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: kcm: Serializing kcmsendmsg for the same socket. syzkaller reported a Use-After-Free error in kcmrelease. 0 The scenario is as follows: 1. Thread A constructs a skb with the MSGMORE flag and sets kcm-seqskb. 2. Thread A...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sun382586: A potential memory leak has been fixed in sun382586sendpacket. In sun382586sendpacket, if skb-len is too long, it returns NETDEVTXOK without freeing the skb. To address this issue, add a call to devkfreeskb to...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Wifi: ath9khtc: Use skbsetlength to reset urb before resubmitting it. Syzbot points out that skbtrim has a sanity check on the existing length of the skb; this length might not be initialized in some error-prone situations. The...

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 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 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: 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 – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Set skstate back to CLOSED if autobind fails in sctplistenstart. In sctplistenstart called by sctpinetlisten, it should set skstate back to CLOSED if sctpautobind fails for any reason. Otherwise, the next time...

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: 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 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 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 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 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 vulnerability has been resolved: net: vertexcom: mse102x: Fixed a possible double-free of TXskb. The scope of TXskb is broader than just mse102xtxframespi; therefore, if the TXskb memory needs to be expanded, we should free the temporary skb instead of the...

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 vulnerability has been resolved: bpf: fix recursive lock when verdict program return SKPASS When the streamverdict program returns SKPASS, it places the received skb into its own receive queue. However, a recursive lock occurs eventually, leading to an operating...

Astra Linux – Vulnerability in Linux 6.1

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