{"id":"AZL-69640","summary":"CVE-2025-23135 affecting package kernel 6.6.126.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRISC-V: KVM: Teardown riscv specific bits after kvm_exit\n\nDuring a module removal, kvm_exit invokes arch specific disable\ncall which disables AIA. However, we invoke aia_exit before kvm_exit\nresulting in the following warning. KVM kernel module can't be inserted\nafterwards due to inconsistent state of IRQ.\n\n[25469.031389] percpu IRQ 31 still enabled on CPU0!\n[25469.031732] WARNING: CPU: 3 PID: 943 at kernel/irq/manage.c:2476 __free_percpu_irq+0xa2/0x150\n[25469.031804] Modules linked in: kvm(-)\n[25469.031848] CPU: 3 UID: 0 PID: 943 Comm: rmmod Not tainted 6.14.0-rc5-06947-g91c763118f47-dirty #2\n[25469.031905] Hardware name: riscv-virtio,qemu (DT)\n[25469.031928] epc : __free_percpu_irq+0xa2/0x150\n[25469.031976]  ra : __free_percpu_irq+0xa2/0x150\n[25469.032197] epc : ffffffff8007db1e ra : ffffffff8007db1e sp : ff2000000088bd50\n[25469.032241]  gp : ffffffff8131cef8 tp : ff60000080b96400 t0 : ff2000000088baf8\n[25469.032285]  t1 : fffffffffffffffc t2 : 5249207570637265 s0 : ff2000000088bd90\n[25469.032329]  s1 : ff60000098b21080 a0 : 037d527a15eb4f00 a1 : 037d527a15eb4f00\n[25469.032372]  a2 : 0000000000000023 a3 : 0000000000000001 a4 : ffffffff8122dbf8\n[25469.032410]  a5 : 0000000000000fff a6 : 0000000000000000 a7 : ffffffff8122dc10\n[25469.032448]  s2 : ff60000080c22eb0 s3 : 0000000200000022 s4 : 000000000000001f\n[25469.032488]  s5 : ff60000080c22e00 s6 : ffffffff80c351c0 s7 : 0000000000000000\n[25469.032582]  s8 : 0000000000000003 s9 : 000055556b7fb490 s10: 00007ffff0e12fa0\n[25469.032621]  s11: 00007ffff0e13e9a t3 : ffffffff81354ac7 t4 : ffffffff81354ac7\n[25469.032664]  t5 : ffffffff81354ac8 t6 : ffffffff81354ac7\n[25469.032698] status: 0000000200000100 badaddr: ffffffff8007db1e cause: 0000000000000003\n[25469.032738] [\u003cffffffff8007db1e\u003e] __free_percpu_irq+0xa2/0x150\n[25469.032797] [\u003cffffffff8007dbfc\u003e] free_percpu_irq+0x30/0x5e\n[25469.032856] [\u003cffffffff013a57dc\u003e] kvm_riscv_aia_exit+0x40/0x42 [kvm]\n[25469.033947] [\u003cffffffff013b4e82\u003e] cleanup_module+0x10/0x32 [kvm]\n[25469.035300] [\u003cffffffff8009b150\u003e] __riscv_sys_delete_module+0x18e/0x1fc\n[25469.035374] [\u003cffffffff8000c1ca\u003e] syscall_handler+0x3a/0x46\n[25469.035456] [\u003cffffffff809ec9a4\u003e] do_trap_ecall_u+0x72/0x134\n[25469.035536] [\u003cffffffff809f5e18\u003e] handle_exception+0x148/0x156\n\nInvoke aia_exit and other arch specific cleanup functions after kvm_exit\nso that disable gets a chance to be called first before exit.","modified":"2026-04-01T05:21:53.518488Z","published":"2025-04-16T15:16:07Z","upstream":["CVE-2025-23135"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-23135"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.126.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-69640.json"}}],"schema_version":"1.7.5"}