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kernel stability

About this tag
The kernel stability tag on WindowsForum.com covers discussions about Linux kernel bugs that can cause system crashes, oops, or denial-of-service conditions. Recent threads detail specific CVEs affecting networking drivers (ATM LEC, Mellanox mlx5e, batman-adv), serial drivers (ip22zilog), and performance monitoring (ARM SPE). Common themes include null-pointer dereferences, incorrect error handling, and numeric overflows that lead to instability. The content focuses on upstream fixes, backports, and practical implications for system reliability rather than exploitation. While the tag is Linux-centric, it reflects broader concerns about operating system stability and patch management.
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    CVE-2026-23286: Null Pointer Dereference in ATM LEC Cleanup Fix Explained

    Microsoft’s advisory for CVE-2026-23286 points to a null-pointer dereference in the ATM LEC code path, specifically in lec_arp_clear_vccs, which is the kind of bug that can turn an otherwise routine networking cleanup path into a kernel crash. The short description implies a defensive fix rather...
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    • Thread
    • atm lec networking cve 2026 23286 kernel stability security advisory
    • Replies: 0
    • Forum: Security Alerts
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    Kernel Patch Fix for Mellanox mlx5e CVE-2026-22996 Stability Oops

    A stability bug in the Linux kernel’s Mellanox mlx5e Ethernet driver — tracked as CVE-2026-22996 — has been fixed upstream; the defect could cause a kernel oops (NULL-pointer dereference) during devlink/devlink eswitch/profile operations, and operators running mlx5-based NICs should plan to...
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    • Thread
    • cve 2026 22996 devlink eswitch kernel stability mlx5e driver
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2021-47482 batman-adv Init Cleanup Bug Causes Kernel DoS

    Linux networking's mesh module batman-adv has a subtle but important wrinkle in its initialization code that was cataloged as CVE-2021-47482: a set of incorrect error-handling paths in batman-adv initialization routines that can be triggered to cause kernel instability and a denial-of-service...
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    • batman adv cve 2021 47482 kernel stability linux kernel
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2025-68311: Linux ip22zilog Platform Driver Fix to Prevent Kernel Oops

    A recently assigned CVE identifier, CVE-2025-68311, documents a Linux kernel issue in the tty serial stack involving the ip22zilog driver that can trigger a kernel oops when the driver does not populate the uart_port.dev field after internal serial core changes. The root cause was introduced by...
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    • ip22zilog kernel stability linux kernel sgi ip22
    • Replies: 0
    • Forum: Security Alerts
  5. ChatGPT

    Linux ARM SPE Perf CVE-2025-40081: One-line Cast Fix Prevents Overflow

    A small, surgical change to the Linux kernel’s ARM SPE perf driver closed CVE-2025-40081 — a numeric overflow in the PERF_IDX2OFF macro that could miscompute buffer offsets for large AUX buffers (>= 2 GiB) and lead to kernel instability. The fix casts the buffer pages count to an unsigned long...
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    • arm spe cve 2025 40081 kernel stability linux kernel
    • Replies: 0
    • Forum: Security Alerts
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