Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86: Added SRCU protection for reading PDPTRs in getsregs2. Added read-side protection when reading PDPTR registers in getsregs2. Reading PDPTRs may trigger access to guest memory: kvmpdptrread - svmcachereg - loadpdptrs ...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ftrace: Fixed a use-after-free issue related to dynamic ftraceops. KASAN reported a use-after-free when using ftrace. It was discovered that perf registered two ftrace operations with the same content, both being dynamic. Afte...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

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 found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: batman-adv: The unmanaged ELP worker is removed. The ELP worker needs to calculate new metric values for all “reachable” neighbors via an interface. Some of the metric calculation functions require locks, which may need to be...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Ceph: The dadd function only adds entries to negative dentries when they are not already present in the primary dcache hash. Ceph may call dadddentry, NULL on a negative dentry that already exists in the primary dcache hash. This...

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

In the Linux kernel, the following vulnerability has been resolved: dm thin: Make getfirstthin use listfirstornullrcu instead of rcu-safe list first function. The documentation in rculist.h explains the absence of listemptyrcu and warns programmers against relying on a sequence of listempty -...

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: netfilter: nftables: Unconditionally increments set-nelems before inserting an element. In the event that the set is full, a new element is inserted and then removed without waiting for the RCU grace period. Meanwhile, the RCU...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: tracing/osnoise: Call synchronizercu when unregistering. This ensures that any RCU readers traversing the instance list have completed their operations before releasing the reference to the tracer that the instance points to...

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 can: bcm code allows for the deferring of the rxop deallocation to the workqueue to fix a thrtimer UAF. The commit f1b4e32aca08 “can: bcm: use callrcu instead of the costly synchronizercu” replaces the synchronizercu in...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed a UAF by restoring the RCU-delayed inode during bpfanyput. The commit “4f375ade6aa9” “bpf: Avoid RCU context warnings when unpinning htab with internal structs” moved the inode cleanup from -freeinode to -destroyino...

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: The issue involves bcm: adding missing rcu read protection for procfs content. When the procfs content is generated for a bcmop that is about to be removed, the procfs output might display unreliable data UAF. Since the removal o...

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: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently, a race condition can occur, potentially leading to issues related to actions. Let’s illustrate this with an...

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 – Fixed RCU usage in the connect path. With lockdep enabled, calls to the connect function from the cfg802.11 layer lead to the following warning: ============================= WARNING: Suspicious RCU usage...

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

In the Linux kernel, the following vulnerabilities have been resolved: - ndisc: RCU protection was added to ndiscallocskb. - ndiscallocskb can be called without holding RTNL or RCU. RCU protection was added to avoid potential Use-after-Free UAF vulnerabilities...

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: netfilter: nftables – Release flowtable after the rcu grace period with an error. The function synchronizercu is called after unregistering the hooks from the error path. This is because a hook that already references this...

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

In the Linux kernel, the following vulnerabilities have been resolved: ila: Call nfunregisternethooks earlier. Syzbot discovered a use-after-free in ilanfinput 1. The issue arises from ilaxlatexitnet freeing the rhashtable, followed by the call to nfunregisternethooks. This should be done in the...

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

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: Fixed a potential race condition in fib6 Droppcpufrom. syzbot detected a race condition in fib6 Droppcpufrom 1. If the compiler reads the value more than once ppcpurt, the second reading might result in NULL, especially ...

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

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: Prevent UAF in proccpusetshow A UAF can occur when reading /proc/cpuset, as reported in 1. This issue can be reproduced using the following methods: 1. Add an mdelay1000 before acquiring the cgrouplock in the...

Rocky Linux 10.0 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2025_10371)

The Rocky Linux 10.0 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202510371 advisory. kernel: ipv6: mcast: extend RCU protection in igmp6send CVE-2025-21759 kernel: x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes...

Rocky Linux 9 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2025_8333)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20258333 advisory. kernel: Use after Free in grusetcontextoption leading to kernel panic CVE-2022-3424 kernel: ndisc: use RCU protection in ndiscallocskb CVE-2025-21764 Tenab...