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xen.23271
5fbcdf99-x86-DMI-fix-SMBIOS-pointer-check.patch
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File 5fbcdf99-x86-DMI-fix-SMBIOS-pointer-check.patch of Package xen.23271
# Commit 6befe598706218673b14710d90d00ce90763b372 # Date 2020-11-24 11:25:29 +0100 # Author Jan Beulich <JBeulich@suse.com> # Committer Jan Beulich <jbeulich@suse.com> x86/DMI: fix SMBIOS pointer range check Forever since its introduction this has been using an inverted relation operator. Fixes: 54057a28f22b ("x86: support SMBIOS v3") Signed-off-by: Jan Beulich <JBeulich@suse.com> Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> --- a/xen/arch/x86/dmi_scan.c +++ b/xen/arch/x86/dmi_scan.c @@ -357,7 +357,7 @@ static int __init dmi_iterate(void (*dec memcpy_fromio(&smbios3, q, sizeof(smbios3)); if (memcmp(smbios3.anchor, "_SM3_", 5) || smbios3.length < sizeof(smbios3) || - q < p + 0x10000 - smbios3.length || + q > p + 0x10000 - smbios3.length || !dmi_checksum(q, smbios3.length)) smbios3.length = 0; }
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