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Vulnerability · Published Apr 16, 2025 · Assigned by Linux

CVE-2025-23135RISC-V: KVM: Teardown riscv specific bits after kvm_exit

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 83.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: RISC-V: KVM: Teardown riscv specific bits after kvm_exit During a module removal, kvm_exit invokes arch specific disable call which disables AIA. However, we invoke aia_exit before kvm_exit resulting in the following warning. KVM kernel module can't be inserted afterwards due to inconsistent state of IRQ. [25469.031389] percpu IRQ 31 still enabled on CPU0! [25469.031732] WARNING: CPU: 3 PID: 943 at kernel/irq/manage.c:2476 __free_percpu_irq+0xa2/0x150 [25469.031804] Modules linked in: kvm(-) [25469.031848] CPU: 3 UID: 0 PID: 943 Comm: rmmod Not tainted 6.14.0-rc5-06947-g91c763118f47-dirty #2 [25469.031905] Hardware name: riscv-virtio,qemu (DT) [25469.031928] epc : __free_percpu_irq+0xa2/0x150 [25469.031976] ra : __free_percpu_irq+0xa2/0x150 [25469.032197] epc : ffffffff8007db1e ra : ffffffff8007db1e sp : ff2000000088bd50 [25469.032241] gp : ffffffff8131cef8 tp : ff60000080b96400 t0 : ff2000000088baf8 [25469.032285] t1 : fffffffffffffffc t2 : 5249207570637265 s0 : ff2000000088bd90 [25469.032329] s1 : ff60000098b21080 a0 : 037d527a15eb4f00 a1 : 037d527a15eb4f00 [25469.032372] a2 : 0000000000000023 a3 : 0000000000000001 a4 : ffffffff8122dbf8 [25469.032410] a5 : 0000000000000fff a6 : 0000000000000000 a7 : ffffffff8122dc10 [25469.032448] s2 : ff60000080c22eb0 s3 : 0000000200000022 s4 : 000000000000001f [25469.032488] s5 : ff60000080c22e00 s6 : ffffffff80c351c0 s7 : 0000000000000000 [25469.032582] s8 : 0000000000000003 s9 : 000055556b7fb490 s10: 00007ffff0e12fa0 [25469.032621] s11: 00007ffff0e13e9a t3 : ffffffff81354ac7 t4 : ffffffff81354ac7 [25469.032664] t5 : ffffffff81354ac8 t6 : ffffffff81354ac7 [25469.032698] status: 0000000200000100 badaddr: ffffffff8007db1e cause: 0000000000000003 [25469.032738] [<ffffffff8007db1e>] __free_percpu_irq+0xa2/0x150 [25469.032797] [<ffffffff8007dbfc>] free_percpu_irq+0x30/0x5e [25469.032856] [<ffffffff013a57dc>] kvm_riscv_aia_exit+0x40/0x42 [kvm] [25469.033947] [<ffffffff013b4e82>] cleanup_module+0x10/0x32 [kvm] [25469.035300] [<ffffffff8009b150>] __riscv_sys_delete_module+0x18e/0x1fc [25469.035374] [<ffffffff8000c1ca>] syscall_handler+0x3a/0x46 [25469.035456] [<ffffffff809ec9a4>] do_trap_ecall_u+0x72/0x134 [25469.035536] [<ffffffff809f5e18>] handle_exception+0x148/0x156 Invoke aia_exit and other arch specific cleanup functions after kvm_exit so that disable gets a chance to be called first before exit.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.115-2DEBIAN-CVE-2025-23135
Debian:14linux6.16.3-1DEBIAN-CVE-2025-23135
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-23135
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-23135
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-23135

Affected products (as reported)

VendorProductVersions
Linux Linux 54e43320c2ba0c70258a3aea690da38c6ea3293c – before ce906c4ae572554f4ea4381d7d0a4ab39f5fca5d54e43320c2ba0c70258a3aea690da38c6ea3293c – before b7236c52151c91f7b83a42d6ec5728a49e06416f54e43320c2ba0c70258a3aea690da38c6ea3293c – before 1edb2de48616b11ee05e9a65d74c70abcb6d993954e43320c2ba0c70258a3aea690da38c6ea3293c – before 1521cc04f0b6e737ff30105aa57fa9dde849323154e43320c2ba0c70258a3aea690da38c6ea3293c – before 2d117e67f318303f6ab699a5511d1fac3f170545
Linux Linux 6.4

References