linux kernel security

CVE-2026-23290 is a reminder that kernel security problems do not always arrive as dramatic memory-corruption headlines. In this case, the Linux pegasus USB network driver is being hardened so it checks that a connected device exposes the USB endpoints the driver expects before binding to it...

The Linux kernel’s CVE-2026-23320 is a reminder that some security issues are less about dramatic code execution and more about getting object lifetimes exactly right. In this case, the vulnerable path sits in usb: gadget: f_ncm, where the net_device was being created too early and destroyed too...

The Linux kernel’s CVE-2026-23292 is a classic example of a bug that looks narrow on paper but matters because it sits in the kernel’s core synchronization machinery. The issue was assigned after maintainers fixed a recursive locking problem in __configfs_open_file(), where...

In the Linux kernel, CVE-2026-23368 is a classic example of how a seemingly small initialization change can remove a hard-to-reproduce system hang. The bug sits in the networking PHY and LED trigger interaction path, where enabling both LEDS_TRIGGER_NETDEV and LED_TRIGGER_PHY could produce an...

The Linux kernel’s CVE-2026-23392 is a narrow but serious use-after-free issue in the nf_tables flowtable error path, and its significance comes from the kind of bug it is rather than the drama of its description. According to the kernel.org-stamped NVD text, the bug can expose a flowtable to...

A newly assigned Linux kernel CVE, CVE-2026-23315, highlights a familiar but still important class of Wi-Fi driver bugs: a bounds-check failure in the mt76 subsystem that could lead to out-of-bounds access in mt76_connac2_mac_write_txwi_80211(). The issue was disclosed through the kernel.org...

Microsoft’s Security Update Guide now lists CVE-2026-23324 as a Linux kernel issue in the can: usb: etas_es58x driver, and the kernel.org description makes the core problem sound deceptively small: an URB in the driver’s read bulk callback was not being anchored before submission, which could...

The Linux kernel’s CVE-2026-23306 is a classic example of how a small control-flow change can create a memory-safety problem in a place that looks, at first glance, like routine driver error handling. The vulnerability affects the pm8001 SCSI host bus adapter driver, where a refactor changed...

CVE-2026-23325 is a small-looking Linux kernel bug with a classic kernel-security lesson hiding inside it: even a narrow bounds-check omission can matter when it sits in a fast path that handles untrusted network frames. According to the kernel.org advisory echoed by Microsoft’s vulnerability...

In the Linux kernel’s mac80211 wireless stack, a newly assigned vulnerability tracked as CVE-2026-23246 highlights a classic but still dangerous bug class: an out-of-bounds write caused by trusting an unvalidated index in a low-level parser. The issue sits in ieee80211_ml_reconfiguration, where...

The Linux kernel’s nf_tables subsystem is once again in the security spotlight, this time for a flaw that looks subtle on paper but speaks volumes about how tricky transaction handling can be in kernel code. CVE-2026-23278 addresses a bug in catchall element cleanup, where the kernel may need to...

Linux kernel CVE-2026-23274 is a small-looking bug with a very specific failure mode, but it sits in exactly the kind of kernel plumbing that can turn a bookkeeping mistake into a crash. The issue is in the netfilter xt_IDLETIMER path: revision 0 rules can reuse an existing timer object by...

In February 2026, the Linux kernel’s RxRPC subsystem received a small-looking but technically important correction: a data-race warning was eliminated, and a possible load/store tearing problem on 32-bit systems was removed at the same time. The issue landed as CVE-2026-23118, and while it is...

The Linux kernel’s F2FS filesystem has received a security-relevant fix for a race condition that can leave the IS_CHECKPOINTED flag in an inconsistent state when atomic commit and checkpoint writes overlap. The issue was discussed on the F2FS mailing list in late December 2025, then applied to...

The Linux kernel’s /proc/net/ptype path is getting a security-focused fix that looks small on the surface but matters because it closes a classic concurrency hole: iterating packet type handlers without enough read-side protection. The issue is tracked as CVE-2026-23255, and the upstream change...

The Linux kernel’s io_uring subsystem is back in the security spotlight, this time for a bug centered on request cleanup in the read/write path. The issue, now tracked as CVE-2026-23259, is described as a failure to free a potentially allocated iovec when cache insertion fails during teardown...

The Microsoft Security Response Center page for CVE-2026-23269 is unavailable, but the underlying issue appears to be an upstream Linux AppArmor fix involving validation of DFA start-state bounds in unpack_pdb. The kernel-side patch context points to a defensive hardening change in AppArmor’s...

This vulnerability is a reminder that even mature kernel subsystems can still fail in subtle, arithmetic-driven ways when device timing, packet sizing, and buffer math collide. CVE-2026-23208 affects the Linux kernel’s ALSA USB-audio path and was fixed after researchers and fuzzing...

The Microsoft Security Response Center page for CVE-2026-23169 is unavailable, but the title itself tells a clear story: this is a Linux kernel MPTCP fix, not a Windows product flaw, and the issue centers on a race in mptcp_pm_nl_flush_addrs_doit(). The available evidence points to a concurrency...

CVE-2026-23221 is another reminder that small-looking kernel bugs can have large security consequences: Microsoft’s update guide entry appears to have been removed or is temporarily unavailable, but the vulnerability title itself points to a use-after-free in the Linux fsl-mc bus code...