CVE-2026-90586 Xtensa MMU userspace: uninitialized thread page-table pointer leads to out-of-bounds supervisor-mode writes
| Reporter | Title | Published | Views | Family All 5 |
|---|---|---|---|---|
 | CVE-2026-90586 | 9 Nov 202622:03 | – | cve |
 | EUVD-2026-120487 | 9 Nov 202622:03 | – | euvd |
 | CVE-2026-90586 | 9 Nov 202622:18 | – | nvd |
 | PT-2026-141162 | 9 Nov 202600:00 | – | ptsecurity |
 | CVE-2026-90586: zephyrproject zephyr: The Xtensa MMU userspace port never initialized the per-thread page-table pointer thread->arch.ptables during thread… | 9 Nov 202600:00 | – | rapid7 |
[
{
"vendor": "zephyrproject",
"product": "zephyr",
"collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
"packageName": "zephyr",
"defaultStatus": "unaffected",
"programFiles": [
"arch/xtensa/core/ptables.c",
"arch/xtensa/core/thread.c"
],
"programRoutines": [
{
"name": "arch_mem_domain_thread_add"
},
{
"name": "arch_new_thread"
}
],
"versions": [
{
"version": "3.6.0",
"status": "affected",
"versionType": "semver",
"lessThan": "4.3.2"
},
{
"version": "4.4.0",
"status": "affected",
"versionType": "semver",
"lessThan": "4.5.0"
}
]
}
]Data
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09 Nov 2026 22:03Current
CVSS 3.17.8
EPSS0.00112