Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ppp: Fixed race conditions in pppfillforwardpath. pppfillforwardpath has two race conditions: 1. The ppp-channels list can change between listempty and listfirstentry, as ppplock is not held. If the only channel is deleted in...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: - net: Restricted SOREUSEPORT option for inet sockets. After the bug was identified, it was discovered that crypto sockets could accidentally be destroyed due to RCU callbacks, as noted by zyzbot 1. Attempting to acquire a mut...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: inet: Sk-skrxdst was converted to RCU rules. The syzbot reported various issues related to early demux processing. One of these issues is included in this changelog 1. Sk-skrxdst uses RCU protection without proper documentatio...

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

In the Linux kernel, the following vulnerability has been resolved: ipv4: iptunnel: Fixed a suspicious RCU usage warning in iptunnelfind The per-netns IP tunnel hash table is protected by the RTNL mutex, and iptunnelfind is only called from the control path where the mutex is acquired. Added a...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: sched: flower: Protect flwalk with rcu. The patch that refactored flwalk to use idrforeachentrycontinueul also removed the rcu protection for individual filters. This caused a use-after-free when the filter was deleted...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fixed a UAF in ieee80211scanrx The ieee80211scanrx function attempts to access scanreq-flags after a null check. However, a UAF Use-after-Allocation was observed when the scan is completed and ieee80211scancomplet...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ipv6: fixed a lockdep issue in in6dumpaddrs According to reports from syzbot, we should not use rcudereference when rcureadlock is not held. WARNING: Suspicious RCU usage. 5.19.0-rc2-syzkaller 0 Not tainted...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: rcu: Dump vmalloc memory info safely Currently, for double invoke callrcu, the memory information of rcuhead objects will be dumped. If these objects are not allocated from the slab allocator, vmallocdumpobj will be invoked, a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: drm/amdkfd: Fixed the lock dependency warning with srcu ====================================================== WARNING: A circular locking dependency was detected. 6.5.0-kfd-yangp 2289 Not tainted...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net/sched: fixed the lockdep issue in qdisctreereducebacklog The qdisctreereducebacklog function is called with the qdisc lock held; this issue was not addressed in the previous version. We must use qdisclookuprcu instead of...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fixed soft lockups in fib6selectpath under high next hop changes. Soft lockups were observed on a cluster of Linux-based edge routers located in a highly dynamic environment. Using the bird service, these routers continuous...

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

In the Linux kernel, the following vulnerability has been resolved: net: fixed possible store tearing in neighperiodicwork. While reviewing a related syzbot report involving neighperiodicwork, I noticed that I forgot to add an annotation when deleting an RCU-protected item from a list. When using...

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

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: A potential dereferencing issue with the RCU was fixed in the wilcparsejoinbssparam function. In the wilcparsejoinbssparam function, the TSF field of the ies structure is accessed after the RCU read-side critical...

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: The neighnotify function can be called without RTNL or RCU protection. Use RCU protection to avoid potential Universal Atomic Faults UAF...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ftrace: The soft lockup issue in ftracemoduleenable has been fixed. A soft lockup was observed when loading the amdgpu module. If a module contains many functions that can be traced, multiple calls to kallsymslookup may take too...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: Avoid scheduling the deletion of associations twice. When forcibly shutting down a port via the configfs interface, nvmetportsubsysdroplink first calls nvmetportdelctrls, and then nvmetdisableport. Both functions will...

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: ARP: RCU protection should be used in arpxmit. arpxmit can be called without RTNL or RCU protection. RCU protection is used to avoid potential Use-after-Allocation UAF vulnerabilities...

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

In the Linux kernel, the following vulnerabilities have been resolved: - In the net subsystem, do not delay the execution of dstentriesadd within dstrelease. - dstentriesadd uses data per-core that might be freed during the dismantling of ip6routenetexit, by calling dstentriesdestroy. Before...

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 – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: The possibility of a Use-after-Free condition arises when selecting an endpoint. The functions selectlocaladdress and selectsignaladdress both select an endpoint from a list within the RCU-protected section. However,...