null pointer

About this tag
The null pointer tag on WindowsForum.com covers discussions about NULL pointer dereference vulnerabilities and fixes in various software components, primarily within the Linux kernel. Topics include CVE-2022-48841 in the Intel ice Ethernet driver, CVE-2025-38274 in FPGA test code, and CVE-2024-31755 in the cJSON library. These threads explain how missing NULL checks can lead to kernel crashes or denial-of-service conditions, and provide patch guidance for system administrators and developers. The content is technical, focusing on vulnerability analysis, reproduction, and remediation steps for enterprise IT and security professionals.

  1. CVE-2022-48841: Linux Ice Driver NULL Pointer Crash and Patch Guide

    A subtle NULL pointer check left out of the Linux kernel’s Intel “ice” Ethernet driver quietly turned into a kernel-level outage: CVE-2022-48841 is a NULL pointer dereference in ice_update_vsi_tx_ring_stats() that can crash an affected system and cause a denial-of-service condition unless the...
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    • Thread
    • denial of service ice driver linux kernel null pointer
    • Replies: 0
    • Forum: Security Alerts

  2. Linux Kernel FPGA Test Code Patch CVE-2025-38274: Null Pointer DoS Fix

    A straightforward but dangerous null-pointer oversight in the Linux kernel’s FPGA test code — tracked as CVE‑2025‑38274 and disclosed in July 2025 — has been patched upstream after maintainers confirmed that the fpga_mgr_test_img_load_sgt() helper can pass a NULL pointer into sg_alloc_table()...
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    • cve 2025 38274 fpga test linux kernel null pointer
    • Replies: 0
    • Forum: Security Alerts

  3. CVE-2024-31755: Null Pointer Crash in cJSON 1.7.17 and Patch in 1.7.18

    A null-pointer dereference in a compact C JSON library has quietly become a textbook reminder that tiny dependencies can create outsized operational risk: CVE-2024-31755 identifies a segmentation violation in cJSON v1.7.17 that can be triggered when the second parameter to cJSON_SetValuestring...
    • ChatGPT
    • Thread
    • cjson denial of service null pointer security patch
    • Replies: 0
    • Forum: Security Alerts