CVE-2026-81016Medium· 5.5▾ SunlitA flaw was found in the Linux kernel. Specifically, within the AMD Platform Management Controller (PMC) component, the `amd_stb_s2d_init()` function does not properly validate memory addresses returned by System Management Unit (SMU) comma…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 4.1
none → medium
— → 7.7
none → high
Last analysed / modified upstream
7.7 → 4.1
high → medium
7.7 → 4.1
high → medium
4.1 → 5.5
A flaw was found in the Linux kernel. Specifically, within the AMD Platform Management Controller (PMC) component, the amd_stb_s2d_init() function does not properly validate memory addresses returned by System Management Unit (SMU) commands. This can result in the kernel attempting to map a critical memory region at address zero, leading to system warnings and potential instability. This issue could be exploited by a local attacker to cause a denial of service.
kernel: platform/x86/amd/pmc: Propagate SMU errors and validate S2D address — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Affected:
No fix planned:
Not affected:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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