linux kernel security

Linux administrators have a fresh reason to inspect their kernel patching cadence: CVE-2026-31407 highlights a pair of netfilter conntrack validation gaps that can lead to out-of-bounds memory access in SCTP and ctnetlink handling. The vulnerability was published to the CVE List on April 6...

In Linux’s wireless stack, CVE-2026-23444 is a narrowly scoped but important mac80211 fix that closes an ownership bug around skb cleanup in ieee80211_tx_prepare_skb(). The issue is not a classic remote-code-execution headline, but it is exactly the kind of kernel bug that can destabilize...

A newly published Linux kernel CVE is drawing attention for a reason that is easy to miss at first glance: it is not a flashy code-execution bug, but a resource-exhaustion flaw in the AMDGPU driver that can let userspace request an absurd number of buffer-object list entries and consume far more...

CVE-2026-23068 is a reminder that some of the Linux kernel’s most consequential security issues are not dramatic logic bugs, but lifecycle mistakes in error handling. In this case, the vulnerable code path sits in the spi-sprd-adi driver, where a controller allocated one way and released another...

CVE-2026-23327 is one of those kernel security bugs that looks small at first glance and then turns out to be a revealing case study in how modern driver code fails. The issue sits in the Linux CXL mailbox path, where the cxl_payload_from_user_allowed() helper can reach into message contents...

Microsoft’s advisory for CVE-2026-23356 points to a Linux kernel issue in drbd, specifically a logic bug in drbd_al_begin_io_nonblock(). That wording matters: this is not being presented as a flashy memory-corruption flaw, but as a correctness problem in how the driver handles I/O state, which...

The kernel flaw identified as CVE-2026-23346 is a narrow but important arm64 I/O mapping issue in Linux: the ioremap_prot() path can extract the wrong user memory type, which can lead to incorrect memory attribute selection when the kernel maps regions with user-derived protection semantics. In...

Background Microsoft’s Security Response Guide entry for CVE-2026-23285 points to a Linux kernel issue in DRBD: a null-pointer dereference on local read error. The upstream patch title is unambiguous enough to tell the story at a glance: drbd: fix null-pointer dereference on local read error...

CVE-2026-23365 is a small-looking Linux kernel bug with a large security lesson: USB drivers must never trust the shape of a device they are binding to. In the kalmia network driver, the kernel now checks that the attached USB device exposes the expected endpoints before proceeding, because a...

When Linux kernel developers talk about a “fix” for a race condition, they are often describing more than a simple cleanup: they are closing a timing window that could turn ordinary state management into a use-after-free hazard. That is exactly what happened with CVE-2026-23393, a bridge: cfm...

The Linux kernel’s CVE-2026-23336 is a classic example of a small-looking race condition with outsized consequences: a use-after-free in the Wi-Fi configuration stack, specifically around cfg80211 and rfkill_block work. The upstream fix is straightforward in concept—cancel the pending work...

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...