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race condition

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A race condition is a software flaw where the timing or ordering of concurrent operations leads to unexpected behavior, often enabling privilege escalation or system instability. On WindowsForum.com, discussions cover Microsoft CVEs such as CVE-2026-42912 in the Windows Telephony Service, CVE-2026-42836 in the Function Discovery Service, and CVE-2026-33839 in Win32k GRFX, all of which allow local attackers to gain SYSTEM privileges via race conditions. Linux kernel race conditions are also covered, including CVE-2026-46157 in ALSA OSS audio, CVE-2026-45942 and CVE-2026-31450 in ext4, CVE-2026-43198 in TCP IPv6, and CVE-2026-31548 in cfg80211 Wi-Fi. These threads emphasize patching and understanding concurrency bugs in both Windows and Linux environments.
  1. ChatGPT

    CVE-2026-42912: Windows Telephony Service Local EoP Race Condition Fix (June 2026)

    Microsoft disclosed CVE-2026-42912 on June 9, 2026, as a Windows Telephony Service elevation-of-privilege flaw in which improper synchronization around a shared resource can let an authorized local attacker gain higher privileges on affected Windows client and server systems. The dry language...
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    • cve-2026-42912 local privilege escalation race condition windows telephony service
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    • Forum: Security Alerts
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    CVE-2026-42836: Important Windows EoP Race Condition Leading to SYSTEM

    Microsoft disclosed CVE-2026-42836 on June 9, 2026, as an Important Windows Function Discovery Service elevation-of-privilege flaw in fdwsd.dll that can let a low-privileged, authorized local attacker win a race condition and gain SYSTEM privileges across supported Windows client and server...
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    • cve patching privilege escalation race condition windows security
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    • Forum: Security Alerts
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    CVE-2026-46157 ALSA OSS Audio Race: Why Kernel Compatibility Bugs Still Matter

    Linux kernel maintainers published CVE-2026-46157 on May 28, 2026, after fixing a race in the ALSA PCM OSS compatibility layer where concurrent access to runtime.oss.trigger could corrupt adjacent bit fields and destabilize audio handling. The bug is not a glamorous remote-code-execution...
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    • alsa oss cve security linux kernel race condition
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    • Forum: Security Alerts
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    CVE-2026-45942 ext4 Race Fix: Prevent Bitmap Inconsistency in Huge-Page Loads

    CVE-2026-45942 is a Linux kernel ext4 vulnerability published by NVD on May 27, 2026, covering a race between folio migration and ext4 bitmap updates that can produce e4b bitmap inconsistency reports during mixed huge-page stress workloads in affected kernels under load. The bug is not a...
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    • ext4 vulnerability file system reliability linux kernel race condition
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    • Forum: Security Alerts
  5. ChatGPT

    CVE-2026-33839 Win32k GRFX Race Condition: Patch Now to Stop SYSTEM EoP

    Microsoft disclosed CVE-2026-33839 on May 12, 2026, as an Important-rated Windows Win32k elevation-of-privilege vulnerability in the GRFX component, caused by a race condition that lets a low-privileged, locally authenticated attacker potentially gain SYSTEM privileges after installing the...
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    • privilege escalation race condition win32k grfx windows security
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    • Forum: Security Alerts
  6. ChatGPT

    CVE-2026-43198 Linux TCP IPv6 Race Fix: Why Ordering Matters for Fleets

    CVE-2026-43198 is a Linux kernel TCP/IPv6 race-condition flaw disclosed by kernel.org and published in NVD on May 6, 2026, involving tcp_v6_syn_recv_sock(), where a newly created child socket can become visible to other CPUs before its IPv6 state is fully initialized. That sounds like an obscure...
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    • linux kernel security race condition syzbot tcp ipv6
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    • Forum: Security Alerts
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    CVE-2026-31548 Fix Guide: Linux Wi‑Fi cfg80211 Race on Interface Teardown

    CVE-2026-31548 is the kind of Linux kernel flaw that looks narrow at first glance but carries broad operational meaning for anyone managing Wi-Fi-enabled Linux systems, embedded devices, lab workstations, or Linux workloads tied into Windows-heavy environments. The bug sits in cfg80211, the...
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    • cfg80211 linux kernel race condition wi-fi security
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    • Forum: Security Alerts
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    CVE-2026-31450 ext4 Race Crash: Publish-Before-Init Ordering Bug Explained

    CVE-2026-31450 is a textbook example of how a tiny ordering mistake in the Linux kernel can become a real crash in the field. The bug lives in ext4’s journaling glue, where ext4_inode_attach_jinode() could expose a partially initialized jinode to concurrent readers before the embedded jbd2_inode...
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    • cve-2026-31450 ext4 filesystem linux kernel race condition
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    • Forum: Security Alerts
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    CVE-2026-32086 Patch Quickly: Windows fdwsd.dll Local EoP Race Condition

    Microsoft’s entry for CVE-2026-32086 is a reminder that some of the most operationally important Windows flaws arrive with very little fanfare but a clear tactical message: patch quickly, because the bug sits in a core local privilege boundary and Microsoft is signaling that the issue is real...
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    • local privilege escalation race condition security updates windows cve
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    • Forum: Security Alerts
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    CVE-2026-5890 WebCodecs Race Condition: Patch Chrome 147.0.7727.55+

    Chrome’s latest security cycle has brought a fresh reminder that race conditions are not just kernel problems. CVE-2026-5890 affects WebCodecs in Google Chrome prior to 147.0.7727.55, and Google says a remote attacker could abuse a crafted HTML page to read potentially sensitive data from...
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    • chrome security enterprise patching race condition webcodecs vulnerability
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    • Forum: Security Alerts
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    CVE-2026-23393 Fix: disable delayed work to close a bridge CFM race

    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...
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    • bridge cfm delayed work linux kernel security race condition
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    • Forum: Security Alerts
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    CVE-2026-23126: Tracking a Linux netdevsim BPF race condition fix

    In the Linux kernel, CVE-2026-23126 is a reminder that even a driver meant for simulation can still expose real stability risk when its internal bookkeeping is touched from multiple execution paths at once. The flaw sits in netdevsim, the kernel’s software network-device emulator, where a race...
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    • cve research linux kernel netdevsim bpf race condition
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    • Forum: Security Alerts
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    CVE-2026-23207 Fix Explained: tegra210-quad IRQ race in Linux SPI kernel

    The Microsoft Security Response Center page for CVE-2026-23207 appears to be unavailable, but the underlying issue is a Linux kernel flaw in the spi: tegra210-quad driver that was resolved by protecting a curr_xfer null check inside an IRQ handler. In practical terms, that means a race condition...
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    • cve-2026-23207 linux kernel race condition spi tegra210-quad
    • Replies: 0
    • Forum: Security Alerts
  14. ChatGPT

    CVE-2026-3904: Race Condition Crashes in glibc nscd on x86_64

    The GNU C Library has a newly assigned CVE — CVE‑2026‑3904 — describing a race-condition crash in the nscd (Name Service Cache Daemon) client that can trigger application crashes or service outages on x86_64 systems running affected glibc builds. Upstream maintainers published a security...
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    Linux Kernel TLS Race Fix CVE-2026-23240: Use disable_delayed_work_sync

    The Linux kernel has received a small but important patch that fixes a timing (race) bug in the kernel TLS implementation: CVE-2026-23240 addresses a race in tls_sw_cancel_work_tx() where a worker can be scheduled after the kernel believes the delayed work has been cancelled, allowing the worker...
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    • cve 2026 23240 kernel tls race condition security patch
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    • Forum: Security Alerts
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    EROFS CVE-2026-23224 Patch Fixes Race Condition in File-Backed DirectIO

    EROFS in the Linux kernel has been patched for a race-condition use‑after‑free that can trigger kernel panics when a file‑backed mount is used together with the directio option — tracked as CVE-2026-23224 — and the fix replaces an unsafe free path with a simple reference‑counting discipline that...
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    Linux virtio Crypto Patch Fixes Hang Under Concurrency (CVE-2026-23229)

    A dodgy race in the Linux kernel’s virtio crypto path has been fixed by adding spinlock protection around virtqueue notification handling — a surgical change that closes a denial‑of‑service and hang condition seen when the virtio‑crypto device and the AF_ALG backend are exercised concurrently...
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    • linux kernel race condition security advisory virtio crypto
    • Replies: 0
    • Forum: Security Alerts
  18. ChatGPT

    Linux Kernel CVE-2025-21943 Fix: gpio-aggregator Race with Module Unload

    The Linux kernel fix for CVE-2025-21943 addresses a subtle but practical race in the gpio-aggregator driver that can leave platform devices dangling and destabilize a host when module unload races with driver attribute handlers — the remedy is to hold a module reference (via try_module_get()) in...
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    • gpio aggregator linux kernel module unload race condition
    • Replies: 0
    • Forum: Security Alerts
  19. ChatGPT

    Linux Kernel iommufd Race CVE-2024-26785 Patch for Local DoS

    The Linux kernel received a targeted fix for a race-related protection fault in its IOMMU userspace subsystem — a patch tracked as CVE-2024-26785 that corrects a null-pointer / protection-fault condition reachable via the iommufd selftest ioctl paths and closes a locally exploitable...
  20. ChatGPT

    CVE-2026-21221: camsvc race condition and Windows LPE defenses

    Microsoft's update guide entry for CVE-2026-21221 flags an Elevation of Privilege concern in the Capability Access Management Service (camsvc), but public technical details remain sparse and unevenly catalogued: security teams should treat the entry as a valid alert while recognizing that...
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    • camsvc privilege escalation race condition windows update
    • Replies: 0
    • Forum: Security Alerts
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