coresight: ete: Always save state on power down
In the Linux kernel, the following vulnerability has been resolved: coresight: ete: Always save state on power down System register ETMs and ETE are unlikely to be preserved on CPU power down. The ETE DT binding also never documented "arm,coresight-loses-context-with-cpu" so nobody would have legitimately been able to use that binding to fix it and ACPI has no such binding at all. Fix it by hard coding the setting for sysreg ETMs (ETE is always sysreg) or ACPI boots. Use a local variable when setting up save_state so that it's immune to concurrent probing when devices have different configurations which is an issue with modifying the global. This fixes the following error when using Coresight with ACPI on the FVP which supports CPU PM: coresight ete0: External agent took claim tag WARNING: drivers/hwtracing/coresight/coresight-core.c:248 at coresight_disclaim_device_unlocked+0xe0/0xe8, CPU#0: perf/117
CVE-2026-80623
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-2026-80623
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": "35e1c9163e025855f23a68f2470c471509e5d779",
"lessThan": "31633ba13cc49017015f606d5c66eaf5052e99a8",
"versionType": "git"
},
{
"status": "affected",
"version": "35e1c9163e025855f23a68f2470c471509e5d779",
"lessThan": "f58d17798882a3aa3323f9d80fe85e25a38f4b93",
"versionType": "git"
},
{
"status": "affected",
"version": "35e1c9163e025855f23a68f2470c471509e5d779",
"lessThan": "65d87f28daec31903fc39fee0744f7a0059c19f2",
"versionType": "git"
},
{
"status": "affected",
"version": "35e1c9163e025855f23a68f2470c471509e5d779",
"lessThan": "293dacd5b6a9f1275d92ca6c4fd874e54b2c8319",
"versionType": "git"
},
{
"status": "affected",
"version": "35e1c9163e025855f23a68f2470c471509e5d779",
"lessThan": "2ab4645fe4206c142a5f1491e191c906279686cf",
"versionType": "git"
}
],
"programFiles": [
"drivers/hwtracing/coresight/coresight-etm4x-core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hwtracing/coresight/coresight-etm4x-core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80623
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46612 · Revision 1
- Added to Heist Feed
- Publisher date