Bug 2383917 (CVE-2025-38487)

Summary: CVE-2025-38487 kernel: soc: aspeed: lpc-snoop: Don't disable channels that aren't enabled
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-07-28 12:03:15 UTC
In the Linux kernel, the following vulnerability has been resolved:

soc: aspeed: lpc-snoop: Don't disable channels that aren't enabled

Mitigate e.g. the following:

    # echo 1e789080.lpc-snoop > /sys/bus/platform/drivers/aspeed-lpc-snoop/unbind
    ...
    [  120.363594] Unable to handle kernel NULL pointer dereference at virtual address 00000004 when write
    [  120.373866] [00000004] *pgd=00000000
    [  120.377910] Internal error: Oops: 805 [#1] SMP ARM
    [  120.383306] CPU: 1 UID: 0 PID: 315 Comm: sh Not tainted 6.15.0-rc1-00009-g926217bc7d7d-dirty #20 NONE
    ...
    [  120.679543] Call trace:
    [  120.679559]  misc_deregister from aspeed_lpc_snoop_remove+0x84/0xac
    [  120.692462]  aspeed_lpc_snoop_remove from platform_remove+0x28/0x38
    [  120.700996]  platform_remove from device_release_driver_internal+0x188/0x200
    ...

Comment 1 Avinash Hanwate 2025-07-28 17:47:52 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072816-CVE-2025-38487-1ffa@gregkh/T