arm64: process: Fix context switching MTE store-only tag check
In the Linux kernel, the following vulnerability has been resolved: arm64: process: Fix context switching MTE store-only tag check SCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check mode. However, it is not part of SCTLR_USER_MASK which imply that on context switch we never clear SCTLR_EL1.TCSO0, so we are leaking that setting into another task. Fix that by including SCTLR_EL1_TCSO0_MASK into SCTLR_USER_MASK
CVE-2026-90094
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-2026-90094
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": "4d51ff5bba00a13ca9b0b24883fa7adb07a167fc",
"lessThan": "00a73ce437e27fdc636a5ede445a4a491e01788d",
"versionType": "git"
},
{
"status": "affected",
"version": "4d51ff5bba00a13ca9b0b24883fa7adb07a167fc",
"lessThan": "2f10bc3ff24c91657887901c3235b803e5055f2b",
"versionType": "git"
},
{
"status": "affected",
"version": "4d51ff5bba00a13ca9b0b24883fa7adb07a167fc",
"lessThan": "b8f070ac3167595069feb1f794c127b805115645",
"versionType": "git"
}
],
"programFiles": [
"arch/arm64/include/asm/processor.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/arm64/include/asm/processor.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90094
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36506 · Revision 1
- Added to Heist Feed
- Publisher date