CVE-2026-81016
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
platform/x86/amd/pmc: Propagate SMU errors and validate S2D address
In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd/pmc: Propagate SMU errors and validate S2D address amd_stb_s2d_init() discards the return value of several S2D SMU commands. When the SMU refuses a command (e.g. "SMU cmd failed. err: 0xff") the failure is only noticed indirectly - if at all - and reported as -EIO, masking the real error. More seriously, the S2D_PHYS_ADDR_LOW/HIGH return values are ignored, so on failure phys_addr_low/hi are left uninitialised and the assembled address is passed straight to devm_ioremap(). When the SMU leaves them at zero this maps physical address 0 and trips the ioremap-on-RAM warning: amd_pmc AMDI000B:00: SMU cmd failed. err: 0xff ioremap on RAM at 0x0000000000000000 - 0x0000000000ffffff WARNING: CPU: 13 PID: 4592 at arch/x86/mm/ioremap.c:... Check the return value of each SMU command and propagate it, and reject a zero physical address before calling devm_ioremap().
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3d7d407dfb05b257e15cb0c6b056428a4a8c2e5d | affected | git | 85ef9d4c384c1d143c51580933674d94dba3b8d9 | Unavailable | None listed |
| 3d7d407dfb05b257e15cb0c6b056428a4a8c2e5d | affected | git | 638e1ca5d4e2b4fdbb209db64926d013b34f3b79 | Unavailable | None listed |
| 3d7d407dfb05b257e15cb0c6b056428a4a8c2e5d | affected | git | 8178f59d76570b152d836bde07f5997f15861f04 | Unavailable | None listed |
| 3d7d407dfb05b257e15cb0c6b056428a4a8c2e5d | affected | git | 775d4cde1f9737796ce7d8393521e9e8c5b49891 | Unavailable | None listed |
| 3d7d407dfb05b257e15cb0c6b056428a4a8c2e5d | affected | git | 0225c1d637687b03726f00ac65b6def843d2c464 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.18 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.112 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |