Riskcovery

CVE-2024-50139

KVM: arm64: Fix shift-out-of-bounds bug

State
Published
Severity
7.9 High
Published
Nov 7, 2024
Updated
Aug 5, 2026
Reserved
Oct 21, 2024

Read the record on cve.org

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

Scores

CVSSScoreVectorSource
3.17.9 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:HLinux
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 7af0c2534f4c57b16e92dfca8c5f40fa90fbb3f3 to before 04ed2ba07ce73f323052475fbd33d647aca3ff2eAffected
  • 7af0c2534f4c57b16e92dfca8c5f40fa90fbb3f3 to before 4b9e11794d910aa55300debbac5f0adcc42c491aAffected
  • 7af0c2534f4c57b16e92dfca8c5f40fa90fbb3f3 to before c6c167afa090ea0451f91814e1318755a8fb8bb9Affected
LinuxLinux
  • 6.3Affected
  • before 6.3Not affected
  • 6.6.59 through 6.6.*Not affected
  • 6.11.6 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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