Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — KVM: arm64: Avoid consuming a stale esr value when SError occur
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0022 13.4 —
AFFECTED
Product Versions Fixed
Linux defe21f49bc98b095300752aa1e19bb608f3e97d – —
Linux 5.11 – 5.15.22
TIMELINE
Jun 20 Reserved by Linux
Jun 20 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2022-48727 (Linux). CVSS 7.3 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Avoid consuming a stale esr value when SError occur
When any exception other than an IRQ occurs, the CPU updates the ESR_EL2
register with the exception syndrome. An SError may also become pending,
and will be synchronised by KVM. KVM notes the exception type, and whether
an SError was synchronised in exit_code.
When an exception other than an IRQ occurs, fixup_guest_exit() updates
vcpu->arch.fault.esr_el2 from the hardware register. When an SError was
synchronised, the vcpu esr value is used to determine if the exception
was due to an HVC. If so, ELR_EL2 is moved back one instruction. This
is so that KVM can process the SError first, and re-execute the HVC if
the guest survives the SError.
But if an IRQ synchronises an SError, the vcpu's esr value is stale.
If the previous non-IRQ exception was an HVC, KVM will corrupt ELR_EL2,
causing an unrelated guest instruction to be executed twice.
Check ARM_EXCEPTION_CODE() before messing with ELR_EL2, IRQs don't
update this register so don't need to check.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| June 20, 2024 | Reserved | Reserved by Linux |
| June 20, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2022-48727 (Linux). CVSS 7.3 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | defe21f49bc98b095300752aa1e19bb608f3e97d | — |
| Linux | Linux | — | 5.11 | 5.15.22 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-48727 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.