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: Fix shift-out-of-bounds bug
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0023 13.6 —
AFFECTED
Product Versions Fixed
Linux 7af0c2534f4c57b16e92dfca8c5f40fa90fbb3f3 – —
Linux 6.3 – 6.6.59
TIMELINE
Oct 21 Reserved by Linux
Nov 7 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-50139 (Linux). CVSS 7.9 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Fix shift-out-of-bounds bug
Fix a shift-out-of-bounds bug reported by UBSAN when running
VM with MTE enabled host kernel.
UBSAN: shift-out-of-bounds in arch/arm64/kvm/sys_regs.c:1988:14
shift exponent 33 is too large for 32-bit type 'int'
CPU: 26 UID: 0 PID: 7629 Comm: qemu-kvm Not tainted 6.12.0-rc2 #34
Hardware name: IEI NF5280R7/Mitchell MB, BIOS 00.00. 2024-10-12 09:28:54 10/14/2024
Call trace:
dump_backtrace+0xa0/0x128
show_stack+0x20/0x38
dump_stack_lvl+0x74/0x90
dump_stack+0x18/0x28
__ubsan_handle_shift_out_of_bounds+0xf8/0x1e0
reset_clidr+0x10c/0x1c8
kvm_reset_sys_regs+0x50/0x1c8
kvm_reset_vcpu+0xec/0x2b0
__kvm_vcpu_set_target+0x84/0x158
kvm_vcpu_set_target+0x138/0x168
kvm_arch_vcpu_ioctl_vcpu_init+0x40/0x2b0
kvm_arch_vcpu_ioctl+0x28c/0x4b8
kvm_vcpu_ioctl+0x4bc/0x7a8
__arm64_sys_ioctl+0xb4/0x100
invoke_syscall+0x70/0x100
el0_svc_common.constprop.0+0x48/0xf0
do_el0_svc+0x24/0x38
el0_svc+0x3c/0x158
el0t_64_sync_handler+0x120/0x130
el0t_64_sync+0x194/0x198
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| October 21, 2024 | Reserved | Reserved by Linux |
| November 7, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-50139 (Linux). CVSS 7.9 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 7af0c2534f4c57b16e92dfca8c5f40fa90fbb3f3 | — |
| Linux | Linux | — | 6.3 | 6.6.59 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-50139 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.