kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free UAF vulnerability,...

CVE-2026-22009-Linux-eBPF-Map-Locking-Race-Use-After-Free

CVE-2026-22009 – Linux eBPF Map Locking Race → Use‑After‑Free Program Code C simulation root@kitploit: // ebpfmapuaf.c - Simulated concurrent map update/free include include include include void mapdata = NULL; int mapfreed = 0; void updatemapvoid arg // Simulate eBPF program updating map if...

CVE-2026-77358

cpp-httplib is a C++ header-only HTTP/HTTPS library. In versions 0.33.0 through 0.50.0, the TLS-enabled WebSocket client frees the TLS session before closing the WebSocket that still uses it, producing a use-after-free. In WebSocketClient::shutdownandclose the SSL object is freed and the pointer...

CVE-2026-74750

A flaw was found in the Linux kernel's ovpn module. This vulnerability arises from an incorrect handling of cryptographic resource freeing, where a function that requires the ability to pause sleep is executed in a context that does not allow it. This improper resource management could lead to...

EUVD-2026-66580

In the Linux kernel, the following vulnerability has been resolved: ovpn: defer key slot crypto freeing to workqueue Key slots are released through a kref and the existing release path frees the AEAD transforms from an RCU callback. That is not safe for all crypto implementations: cryptofreeaead...

CVE-2026-74750

CVE-2026-74750 affects the Linux kernel's ovpn (OpenVPN) module . The root cause is that key slots are released via an RCU callback, which calls crypto_free_aead —a function that may sleep when an asynchronous or hardware crypto implementation has pending teardown work. Calling a sleeping functio...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues: The following security issues were fixed: CVE-2025-68741: scsi: qla2xxx: Fix improper freeing of purex item bsc1255703. CVE-2025-68818: scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort pat...

CVE-2026-74605

A flaw was found in the Linux kernel's eventfs component. This vulnerability allows a local attacker to cause a system crash or other unpredictable behavior due to a race condition during the freeing of an eventfs inode. The issue stems from improper synchronization when iterating over a specific...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Fixed a memory leak in the WMI firmware stats. The memory allocated for firmware pdev, vdev, and beacon statistics is not released during rmmod. This issue was fixed by calling the ath11kfwstatsfree function before...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: The issue related to “slab-use-after-free” in smb3preauthhashrsp has been fixed. The function ksmbdusersessionput should be called under smb3preauthhashrsp. This will prevent freeing the session before calling...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net: openvswitch: Fixed a leak in nested actions. When parsing user-provided actions, the openvswitch module may dynamically allocate memory and store pointers in the internal copy of the actions. This memory must be freed whe...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fixed a potential use-after-free issue in irqprocessworklist. The listforeachentry Safe function was used to allow iterating through the list and deleting entries during the iteration process. The descriptors are...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: A memory leak has been fixed in qla2x00probeone. There is also a memory leak reported by kmemleak: unreferenced object 0xffffc900003f0000 size 12288: - Source: comm "modprobe", pid 19117, jiffies 4299751452 age...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: Use deltimersync before freeing the timer. When checking a crash report regarding a corrupted timer list, it was found that this issue usually occurs when a timer is freed while still active. This problem is...

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

In the Linux kernel, the following vulnerability has been resolved: net: ena: Fixed incorrect descriptor freeing behavior. ENA has two types of TX queues: - Queues that only process TX packets arriving from the network stack. - Queues that only process TX packets forwarded to them by XDPREDIRECT ...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: phy: mscc: Fixed a memory leak that occurred when using one-step timestamping. When running one-step sync timestamping, the hardware is configured to insert the TX time into the frame. There is therefore no reason to keep th...

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

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Cancel dqisyncwork before freeing oinfo. The ocfs2globalreadinfo function will initialize and schedule dqisyncwork at the end. If an error occurs after successfully reading the global quota, the following warning will be...

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

In the Linux kernel, the following vulnerabilities have been resolved: IB/hfi1: Fixed a possible panic during hotplug remove. During hotplug remove, it is possible that the update counters’ operations might still be pending, and they may execute after the memory has been freed. Canceling the upda...

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

In the Linux kernel, the following vulnerability has been resolved: “interconnect”: fixed a memory leak when freeing nodes. The node link array is allocated when adding links to a node, but it is not deallocated when nodes are destroyed...

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: scsi: snic: Fixed a possible memory leak if deviceadd fails. If deviceadd returns an error, the name allocated by devsetname needs to be freed. As noted in the comments for deviceadd, putdevice should be used to release the...