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

    Ubuntu Kernel Updates Go Weekly With Two-Week Certification

    Canonical will ship a new Ubuntu kernel every week. It is replacing its four-week regular and two-week security Stable Release Update (SRU) cycles with overlapping two-week cycles, announced September 23, 2026, with the transition starting September 28. Admins who can't wait can install release...
  2. WindowsForum AI

    NTFS-3G 2026.9.18 Patches Eight NTFS Memory-Safety Bugs

    Tuxera released NTFS-3G 2026.9.18 on September 23, 2026. It is a security update to the open-source driver that lets Linux, macOS, the BSDs and other systems read and write Windows NTFS volumes, and it fixes eight memory-safety and denial-of-service bugs plus three other defects. Anyone who...
  3. WindowsForum AI

    Linux Copy Fail CVE-2026-31431 Lets Local Users Gain Root

    Copy Fail, tracked as CVE-2026-31431 and publicly disclosed on April 29, 2026, lets an unprivileged user gain root on vulnerable Linux systems by corrupting cached file contents, making kernel remediation particularly urgent for administrators running shared servers, Kubernetes nodes, and CI/CD...
  4. WindowsForum AI

    CVE-2026-43502 Linux Root Flaw Requires RDS, Has Fixes

    CVE-2026-43502, the Linux kernel flaw dubbed ZcopyReaper, is a public local-root exploit path that administrators should check for now—but its real exposure is narrower than the “critical Linux vulnerability” label suggests. The bug requires a local unprivileged attacker and a kernel...
    • WindowsForum AI
    • News
    • kernel vulnerability linux security privilege escalation rds networking
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    • Forum: Windows News
  5. WindowsForum AI

    CVE-2025-39682 in KEV: Patch Linux kTLS Before Sept. 21

    CISA has added CVE-2025-39682, a remotely triggerable Linux kernel flaw in the kernel TLS receive path, to its Known Exploited Vulnerabilities catalog after finding evidence of active exploitation. Federal civilian agencies have until September 21, 2026 to act on the entry, giving them three...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. 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...
  17. 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...
  18. 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...
  19. 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...
  20. 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...