x86/MCE/AMD: Use an u64 for bank_map
In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Use an u64 for bank_map Thee maximum number of MCA banks is 64 (MAX_NR_BANKS), see a0bc32b3cacf ("x86/mce: Increase maximum number of banks to 64"). However, the bank_map which contains a bitfield of which banks to initialize is of type unsigned int and that overflows when those bit numbers are >= 32, leading to UBSAN complaining correctly: UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38 shift exponent 32 is too large for 32-bit type 'int' Change the bank_map to a u64 and use the proper BIT_ULL() macro when modifying bits in there. [ bp: Rewrite commit message. ]
CVE-2023-53474
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2023-53474
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "a0bc32b3cacf194dc479b342f006203fd1e1941a",
"lessThan": "a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83",
"versionType": "git"
},
{
"status": "affected",
"version": "a0bc32b3cacf194dc479b342f006203fd1e1941a",
"lessThan": "11c58a0c1937c157dbdf82d5ab634d68c99f3098",
"versionType": "git"
},
{
"status": "affected",
"version": "a0bc32b3cacf194dc479b342f006203fd1e1941a",
"lessThan": "ba8ffb1251eb629c2ec35220e3896cf4f7b888a7",
"versionType": "git"
},
{
"status": "affected",
"version": "a0bc32b3cacf194dc479b342f006203fd1e1941a",
"lessThan": "9669fa17287c3af2bbd4868d4c8fdd9e57f8332e",
"versionType": "git"
},
{
"status": "affected",
"version": "a0bc32b3cacf194dc479b342f006203fd1e1941a",
"lessThan": "67bb7521b6420d81dab7538c0686f18f7d6d09f4",
"versionType": "git"
},
{
"status": "affected",
"version": "a0bc32b3cacf194dc479b342f006203fd1e1941a",
"lessThan": "4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156",
"versionType": "git"
}
],
"programFiles": [
"arch/x86/kernel/cpu/mce/amd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.180",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.111",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.28",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.2.15",
"versionType": "semver",
"lessThanOrEqual": "6.2.*"
},
{
"status": "unaffected",
"version": "6.3.2",
"versionType": "semver",
"lessThanOrEqual": "6.3.*"
},
{
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/kernel/cpu/mce/amd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2023-53474
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30272 · Revision 1
- Added to Heist Feed
- Publisher date