CVE-2023-54013 in Linux
요약
\~에 의해 VulDB • 2026. 05. 31.
리눅스 커널에서 다음 취약점이 해결되었습니다:
interconnect: runpm과 리클레임 간 잠금 처리 수정
icc_bw_set()이 shrinker/리클레임과 데드락을 일으킬 수 있는 호출 경로(예: runpm resume)에서 호출될 수 있는 경우, icc 잠금을 분리해야 합니다. 메모리 할당이 필요한 경로(노드/링크 생성/삭제 등)와 분리하여 대역폭 집계 및 업데이트를 직렬화해야 하는 경우를 위해 새로운 icc_bw_lock을 도입합니다.
다음 lockdep 스플래시를 수정합니다:
====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc6 #1 Not tainted -------------------------------------------- kworker/0:1/10 is trying to acquire lock: ffff800080088080 (icc_lock){+.+.}-{3:3}:
__mutex_lock+0xcc/0x3c8 mutex_lock_nested+0x30/0x44 icc_set_bw+0x88/0x2b4 _set_opp_bw+0x8c/0xd8 _set_opp+0x19c/0x300 dev_pm_opp_set_opp+0x84/0x94 a6xx_gmu_resume+0x18c/0x804 a6xx_pm_resume+0xf8/0x234 adreno_runtime_resume+0x2c/0x38 pm_generic_runtime_resume+0x30/0x44 __rpm_callback+0x15c/0x174 rpm_callback+0x78/0x7c rpm_resume+0x318/0x524 __pm_runtime_resume+0x78/0xbc adreno_load_gpu+0xc4/0x17c msm_open+0x50/0x120 drm_file_alloc+0x17c/0x228 drm_open_helper+0x74/0x118 drm_open+0xa0/0x144 drm_stub_open+0xd4/0xe4 chrdev_open+0x1b8/0x1e4 do_dentry_open+0x2f8/0x38c vfs_open+0x34/0x40 path_openat+0x64c/0x7b4 do_filp_open+0x54/0xc4 do_sys_openat2+0x9c/0x100 do_sys_open+0x50/0x7c __arm64_sys_openat+0x28/0x34 invoke_syscall+0x8c/0x128 el0_svc_common.constprop.0+0xa0/0x11c do_el0_svc+0x24/0x2c el0t_64_sync_handler+0x84/0xe0 el0t_64_sync+0x1a8/0x1ac
but task is already holding lock that is a new dependency: ffff800080088000 (icc_bw_lock){+.+.}-{3:3}:
__mutex_lock+0xcc/0x3c8 mutex_lock_nested+0x30/0x44 icc_node_add_common+0x100/0x174 icc_node_create_nolock+0x4c/0xc4 icc_node_create+0x38/0x58 qcom_icc_rpmh_probe+0x1b8/0x248 platform_probe+0x70/0xc4 really_probe+0x158/0x290 __driver_probe_device+0xc8/0xe0 driver_probe_device+0x44/0x100 __driver_attach+0xf8/0x108 bus_for_each_dev+0x78/0xc4 driver_attach+0x2c/0x38 bus_add_driver+0xd0/0x1d8 driver_register+0xbc/0xf8 __platform_driver_register+0x30/0x3c qnoc_driver_init+0x24/0x30 do_one_initcall+0x104/0x2bc kernel_init_freeable+0x344/0x34c kernel_init+0x30/0x134 ret_from_fork+0x10/0x20
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