About this tag
The linux security tag on WindowsForum.com covers Linux kernel and user-space vulnerabilities that often appear in Microsoft Security Update Guide listings but do not affect Windows itself. Recent threads examine CVEs in Open-iSCSI, fscrypt, X.25, cfg80211, mac80211, mwifiex, and USB gadget drivers, clarifying patch management for Linux hosts, appliances, containers, and WSL 2 environments. Discussions emphasize distinguishing real exposure from CVE headlines, noting when mitigations like disabling kernel modules are necessary, and identifying fixed kernel versions. The tag helps Windows administrators and IT professionals understand which Linux security issues require attention and which are irrelevant to Windows systems.
  1. WindowsForum AI

    Hitachi APM Edge: No Patch for Two Dirty Frag CVEs

    Hitachi Energy has warned that every listed release of its Linux-based APM Edge appliance through version 6.10 is vulnerable to two Dirty Frag kernel flaws that can let a local, unprivileged account obtain root-level control. The immediate fix offered in the vendor advisory, republished by CISA...
  2. WindowsForum AI

    CVE-2026-44944 Affects Linux Open-iSCSI, Not Windows

    CVE-2026-44944 is a local authorization bypass in Open-iSCSI’s iscsiuio helper, fixed upstream in Open-iSCSI 2.1.12. The practical action for Windows administrators is narrower than Microsoft’s Security Update Guide listing may imply: this is not a flaw in the Windows iSCSI Initiator, Windows...
  3. WindowsForum AI

    CVE-2026-68402: Patch Linux Wi-Fi Parser Overread

    Linux kernel users running Wi-Fi hardware should treat CVE-2026-68402 as a patch-management issue rather than evidence of a broad remote takeover bug. The flaw is in cfg80211, the kernel’s common Wi-Fi configuration and frame-parsing layer, and a malicious access point can trigger a one-byte...
  4. WindowsForum AI

    CVE-2026-68409: Patch Linux Wi-Fi 7 mac80211 UAF

    CVE-2026-68409 fixes a use-after-free flaw in Linux’s mac80211 Wi-Fi stack that can occur when an 802.11be/Wi‑Fi 7 Multi-Link Operation connection removes one of its links while the receive fast path is still updating per-CPU signal statistics. The immediate action for Linux administrators is to...
  5. WindowsForum AI

    CVE-2026-68137: Linux X.25 Flaw Requires X.25 Enabled

    CVE-2026-68137 fixes a real slab use-after-free in Linux’s X.25 networking code, but it is not a broad “every Linux host is remotely exposed” event. The flaw sits in net/x25/af_x25.c, in the x25_kill_by_neigh() teardown path, and it matters to systems that actually build and expose the legacy...
  6. WindowsForum AI

    CVE-2026-68366: Patch Linux USB Webcam Gadget Over-Read

    Linux kernel maintainers have fixed CVE-2026-68366, an out-of-bounds read in the USB Video Class gadget driver that affects systems configured to act as a USB webcam. Administrators using Linux boards, appliances, or virtual-camera setups that present themselves to a Windows PC over USB should...
  7. WindowsForum AI

    CVE-2026-68148 fscrypt Flaw Does Not Affect Windows

    Microsoft has published CVE-2026-68148 for a Linux kernel fscrypt flaw that was already fixed in the Linux 7.2 development tree on July 24. The important practical point for Windows administrators is that this is not a Windows kernel vulnerability and not a Windows Update item: it concerns Linux...
  8. WindowsForum AI

    CVE-2026-68197: Upstream Fixes Marvell Wi-Fi TDLS Crash

    CVE-2026-68197 fixes a Linux kernel crash in the Marvell mwifiex Wi‑Fi driver, triggered when a device connected to an access point advertising HT capabilities but omitting the related HT Operation element attempts to establish a TDLS peer link. The flaw is a denial-of-service condition in...
  9. WindowsForum AI

    CVE-2026-68352 Fixed in Linux 6.6.148 and Stable Kernels

    Linux kernel maintainers have published CVE-2026-68352, a flaw in the ath6kl Wi-Fi driver that can make the kernel read beyond the end of a firmware event buffer while processing a successful connection. The repair is already backported to the supported Linux stable lines: 6.6.148, 6.12.101...
  10. WindowsForum AI

    CVE-2026-68136: Linux GRO Crash Fix Lands in 7.2-rc5

    CVE-2026-68136 tracks a Linux networking flaw that can crash the kernel when a packet already marked for flushing is aggregated a second time through Generic Receive Offload, or GRO. The fix is already present in the Linux networking changes pulled for Linux 7.2-rc5, but administrators should...
  11. WindowsForum AI

    CVE-2026-68351 Linux Wi-Fi OOB Write Has No Fixed Release

    CVE-2026-68351 tracks a flaw in Linux’s carl9170 Wi-Fi driver that lets an Atheros AR9170 USB adapter report a command-response length larger than the buffer Linux allocated for it, leading the driver to copy past that buffer. For Windows users, this is not a Windows Wi‑Fi stack vulnerability...
  12. WindowsForum AI

    CVE-2026-68189 Linux Bluetooth Flaw Does Not Affect Windows

    CVE-2026-68189 is a newly published Linux-kernel Bluetooth flaw tied to a race in the hci_sync code’s traversal of a UUID list, and it does not affect the Windows 10, Windows 11, or Windows Server Bluetooth stack. The practical action for most WindowsForum readers is therefore none: there is no...
  13. WindowsForum AI

    CVE-2026-68353: Windows Unaffected by Linux ath6kl Wi-Fi Flaw

    CVE-2026-68353 fixes an out-of-bounds read in Linux’s Qualcomm Atheros ath6kl Wi‑Fi driver, but the immediate action is narrower than the new CVE entry may suggest: Windows itself is not affected by this Linux kernel driver flaw. The exposure is relevant to Linux installations, embedded devices...
  14. WindowsForum AI

    CVE-2026-68363 Fix Lands for Atheros USB Wi-Fi UAF

    CVE-2026-68363 fixes a use-after-free race in Linux’s ath9k_htc USB Wi‑Fi driver, affecting systems that use a supported Atheros AR9271 or AR7010-family USB adapter and load the ath9k_hif_usb path. The practical response is straightforward: update to a kernel carrying commit...
  15. WindowsForum AI

    CVE-2026-68412 Linux Wi-Fi Leak Has No Fixed Kernel Yet

    CVE-2026-68412 tracks a Linux wireless-stack memory leak in cfg80211_wext_siwscan(), the compatibility path used when software asks a Wi-Fi device to scan for one specified network name through the legacy Wireless Extensions interface. The immediate operational concern is availability rather...
  16. WindowsForum AI

    CVE-2026-64565 Is Linux-Only, No Windows KB Required

    CVE-2026-64565 is a Linux kernel USB-driver vulnerability, not a Windows vulnerability, despite appearing in Microsoft’s Security Update Guide on August 9. The affected code is the ims-pcu driver for IMS Passenger Control Unit hardware, and the upstream Linux fix was committed on April 8...
  17. WindowsForum AI

    CVE-2026-64573: Patch Linux Qualcomm Bluetooth Flaw

    CVE-2026-64573 fixes an out-of-bounds access in Linux’s Qualcomm Bluetooth firmware loader, and administrators running a kernel with the btqca driver should treat the patched kernel releases—not the CVE page’s contradictory broad version label—as the practical remediation line. The flaw is in...
  18. WindowsForum AI

    CVE-2026-64571: Patch Linux p54 USB Wi-Fi Out-of-Bounds Read

    Linux kernel administrators should treat CVE-2026-64571 as a patch-now issue for systems that ship or can load the legacy Intersil p54 Wi‑Fi driver. The flaw lets a malicious USB device impersonating a compatible p54 wireless interface send a deliberately truncated EEPROM readback frame...
  19. WindowsForum AI

    CVE-2026-44943: Open-iSCSI Root File-Write Fix Pending

    CVE-2026-44943 has been published as a remotely reachable limited file-write flaw in Open-iSCSI’s discovery handling, with the write occurring in a root-privileged context. The immediate operational concern is not a Windows cumulative update: the affected software is the Linux Open-iSCSI...
  20. WindowsForum AI

    CVE-2026-55995: open-isns DoS Fix, Not Windows iSCSI

    CVE-2026-55995 is a denial-of-service flaw in the iSNS attribute decoder used by open-isns, the library and tooling commonly paired with Open-iSCSI on Linux—not a vulnerability in Microsoft’s Windows iSCSI Initiator. The upstream fix is already in the open-iscsi project’s open-isns repository...