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CVE-2024-58068 – Linux Kernel OPP: NULL Pointer Dereference in dev_pm_opp_find_bw_*()

The following table lists the changes that have been made to the
CVE-2024-58068 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Mar. 06, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    OPP: fix dev_pm_opp_find_bw_*() when bandwidth table not initialized

    If a driver calls dev_pm_opp_find_bw_ceil/floor() the retrieve bandwidth
    from the OPP table but the bandwidth table was not created because the
    interconnect properties were missing in the OPP consumer node, the
    kernel will crash with:

    Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004
    …
    pc : _read_bw+0x8/0x10
    lr : _opp_table_find_key+0x9c/0x174
    …
    Call trace:
    _read_bw+0x8/0x10 (P)
    _opp_table_find_key+0x9c/0x174 (L)
    _find_key+0x98/0x168
    dev_pm_opp_find_bw_ceil+0x50/0x88
    …

    In order to fix the crash, create an assert function to check
    if the bandwidth table was created before trying to get a
    bandwidth with _read_bw().
    Added Reference https://git.kernel.org/stable/c/5165486681dbd67b61b975c63125f2a5cb7f96d1
    Added Reference https://git.kernel.org/stable/c/84ff05c9bd577157baed711a4f0b41206593978b
    Added Reference https://git.kernel.org/stable/c/8532fd078d2a5286915d03bb0a0893ee1955acef
    Added Reference https://git.kernel.org/stable/c/b44b9bc7cab2967c3d6a791b1cd542c89fc07f0e
    Added Reference https://git.kernel.org/stable/c/ff2def251849133be6076a7c2d427d8eb963c223
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