{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53563","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-04T15:14:15.923Z","datePublished":"2025-10-04T15:17:06.340Z","dateUpdated":"2026-05-11T19:47:23.424Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:47:23.424Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: amd-pstate-ut: Fix kernel panic when loading the driver\n\nAfter loading the amd-pstate-ut driver, amd_pstate_ut_check_perf()\nand amd_pstate_ut_check_freq() use cpufreq_cpu_get() to get the policy\nof the CPU and mark it as busy.\n\nIn these functions, cpufreq_cpu_put() should be used to release the\npolicy, but it is not, so any other entity trying to access the policy\nis blocked indefinitely.\n\nOne such scenario is when amd_pstate mode is changed, leading to the\nfollowing splat:\n\n[ 1332.103727] INFO: task bash:2929 blocked for more than 120 seconds.\n[ 1332.110001] Not tainted 6.5.0-rc2-amd-pstate-ut #5\n[ 1332.115315] \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n[ 1332.123140] task:bash state:D stack:0 pid:2929 ppid:2873 flags:0x00004006\n[ 1332.123143] Call Trace:\n[ 1332.123145] \n[ 1332.123148] __schedule+0x3c1/0x16a0\n[ 1332.123154] ? _raw_read_lock_irqsave+0x2d/0x70\n[ 1332.123157] schedule+0x6f/0x110\n[ 1332.123160] schedule_timeout+0x14f/0x160\n[ 1332.123162] ? preempt_count_add+0x86/0xd0\n[ 1332.123165] __wait_for_common+0x92/0x190\n[ 1332.123168] ? __pfx_schedule_timeout+0x10/0x10\n[ 1332.123170] wait_for_completion+0x28/0x30\n[ 1332.123173] cpufreq_policy_put_kobj+0x4d/0x90\n[ 1332.123177] cpufreq_policy_free+0x157/0x1d0\n[ 1332.123178] ? preempt_count_add+0x58/0xd0\n[ 1332.123180] cpufreq_remove_dev+0xb6/0x100\n[ 1332.123182] subsys_interface_unregister+0x114/0x120\n[ 1332.123185] ? preempt_count_add+0x58/0xd0\n[ 1332.123187] ? __pfx_amd_pstate_change_driver_mode+0x10/0x10\n[ 1332.123190] cpufreq_unregister_driver+0x3b/0xd0\n[ 1332.123192] amd_pstate_change_driver_mode+0x1e/0x50\n[ 1332.123194] store_status+0xe9/0x180\n[ 1332.123197] dev_attr_store+0x1b/0x30\n[ 1332.123199] sysfs_kf_write+0x42/0x50\n[ 1332.123202] kernfs_fop_write_iter+0x143/0x1d0\n[ 1332.123204] vfs_write+0x2df/0x400\n[ 1332.123208] ksys_write+0x6b/0xf0\n[ 1332.123210] __x64_sys_write+0x1d/0x30\n[ 1332.123213] do_syscall_64+0x60/0x90\n[ 1332.123216] ? fpregs_assert_state_consistent+0x2e/0x50\n[ 1332.123219] ? exit_to_user_mode_prepare+0x49/0x1a0\n[ 1332.123223] ? irqentry_exit_to_user_mode+0xd/0x20\n[ 1332.123225] ? irqentry_exit+0x3f/0x50\n[ 1332.123226] ? exc_page_fault+0x8e/0x190\n[ 1332.123228] entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n[ 1332.123232] RIP: 0033:0x7fa74c514a37\n[ 1332.123234] RSP: 002b:00007ffe31dd0788 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\n[ 1332.123238] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fa74c514a37\n[ 1332.123239] RDX: 0000000000000008 RSI: 000055e27c447aa0 RDI: 0000000000000001\n[ 1332.123241] RBP: 000055e27c447aa0 R08: 00007fa74c5d1460 R09: 000000007fffffff\n[ 1332.123242] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008\n[ 1332.123244] R13: 00007fa74c61a780 R14: 00007fa74c616600 R15: 00007fa74c615a00\n[ 1332.123247] \n\nFix this by calling cpufreq_cpu_put() wherever necessary.\n\n[ rjw: Subject and changelog edits ]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cpufreq/amd-pstate-ut.c"],"versions":[{"version":"14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015","lessThan":"fcf78a17bbb94bebaa912f0460a1848f7d374c94","status":"affected","versionType":"git"},{"version":"14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015","lessThan":"84857640c67405eed258c461b3ef909002f1e201","status":"affected","versionType":"git"},{"version":"14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015","lessThan":"0f74f12ee042fd72e45f0e8700e063c84ef3883b","status":"affected","versionType":"git"},{"version":"14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015","lessThan":"60dd283804479c4a52f995b713f448e2cd65b8c8","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cpufreq/amd-pstate-ut.c"],"versions":[{"version":"6.1","status":"affected"},{"version":"0","lessThan":"6.1","status":"unaffected","versionType":"semver"},{"version":"6.1.53","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.4.16","lessThanOrEqual":"6.4.*","status":"unaffected","versionType":"semver"},{"version":"6.5.3","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.1.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.4.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.5.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/fcf78a17bbb94bebaa912f0460a1848f7d374c94"},{"url":"https://git.kernel.org/stable/c/84857640c67405eed258c461b3ef909002f1e201"},{"url":"https://git.kernel.org/stable/c/0f74f12ee042fd72e45f0e8700e063c84ef3883b"},{"url":"https://git.kernel.org/stable/c/60dd283804479c4a52f995b713f448e2cd65b8c8"}],"title":"cpufreq: amd-pstate-ut: Fix kernel panic when loading the driver","x_generator":{"engine":"bippy-1.2.0"}}}}