{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-52707", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-07T14:49:46.891Z", "datePublished": "2024-05-21T15:22:55.315Z", "dateUpdated": "2024-11-04T14:51:34.373Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T14:51:34.373Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/psi: Fix use-after-free in ep_remove_wait_queue()\n\nIf a non-root cgroup gets removed when there is a thread that registered\ntrigger and is polling on a pressure file within the cgroup, the polling\nwaitqueue gets freed in the following path:\n\n do_rmdir\n cgroup_rmdir\n kernfs_drain_open_files\n cgroup_file_release\n cgroup_pressure_release\n psi_trigger_destroy\n\nHowever, the polling thread still has a reference to the pressure file and\nwill access the freed waitqueue when the file is closed or upon exit:\n\n fput\n ep_eventpoll_release\n ep_free\n ep_remove_wait_queue\n remove_wait_queue\n\nThis results in use-after-free as pasted below.\n\nThe fundamental problem here is that cgroup_file_release() (and\nconsequently waitqueue's lifetime) is not tied to the file's real lifetime.\nUsing wake_up_pollfree() here might be less than ideal, but it is in line\nwith the comment at commit 42288cb44c4b (\"wait: add wake_up_pollfree()\")\nsince the waitqueue's lifetime is not tied to file's one and can be\nconsidered as another special case. While this would be fixable by somehow\nmaking cgroup_file_release() be tied to the fput(), it would require\nsizable refactoring at cgroups or higher layer which might be more\njustifiable if we identify more cases like this.\n\n BUG: KASAN: use-after-free in _raw_spin_lock_irqsave+0x60/0xc0\n Write of size 4 at addr ffff88810e625328 by task a.out/4404\n\n\tCPU: 19 PID: 4404 Comm: a.out Not tainted 6.2.0-rc6 #38\n\tHardware name: Amazon EC2 c5a.8xlarge/, BIOS 1.0 10/16/2017\n\tCall Trace:\n\t<TASK>\n\tdump_stack_lvl+0x73/0xa0\n\tprint_report+0x16c/0x4e0\n\tkasan_report+0xc3/0xf0\n\tkasan_check_range+0x2d2/0x310\n\t_raw_spin_lock_irqsave+0x60/0xc0\n\tremove_wait_queue+0x1a/0xa0\n\tep_free+0x12c/0x170\n\tep_eventpoll_release+0x26/0x30\n\t__fput+0x202/0x400\n\ttask_work_run+0x11d/0x170\n\tdo_exit+0x495/0x1130\n\tdo_group_exit+0x100/0x100\n\tget_signal+0xd67/0xde0\n\tarch_do_signal_or_restart+0x2a/0x2b0\n\texit_to_user_mode_prepare+0x94/0x100\n\tsyscall_exit_to_user_mode+0x20/0x40\n\tdo_syscall_64+0x52/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\t</TASK>\n\n Allocated by task 4404:\n\n\tkasan_set_track+0x3d/0x60\n\t__kasan_kmalloc+0x85/0x90\n\tpsi_trigger_create+0x113/0x3e0\n\tpressure_write+0x146/0x2e0\n\tcgroup_file_write+0x11c/0x250\n\tkernfs_fop_write_iter+0x186/0x220\n\tvfs_write+0x3d8/0x5c0\n\tksys_write+0x90/0x110\n\tdo_syscall_64+0x43/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\n Freed by task 4407:\n\n\tkasan_set_track+0x3d/0x60\n\tkasan_save_free_info+0x27/0x40\n\t____kasan_slab_free+0x11d/0x170\n\tslab_free_freelist_hook+0x87/0x150\n\t__kmem_cache_free+0xcb/0x180\n\tpsi_trigger_destroy+0x2e8/0x310\n\tcgroup_file_release+0x4f/0xb0\n\tkernfs_drain_open_files+0x165/0x1f0\n\tkernfs_drain+0x162/0x1a0\n\t__kernfs_remove+0x1fb/0x310\n\tkernfs_remove_by_name_ns+0x95/0xe0\n\tcgroup_addrm_files+0x67f/0x700\n\tcgroup_destroy_locked+0x283/0x3c0\n\tcgroup_rmdir+0x29/0x100\n\tkernfs_iop_rmdir+0xd1/0x140\n\tvfs_rmdir+0xfe/0x240\n\tdo_rmdir+0x13d/0x280\n\t__x64_sys_rmdir+0x2c/0x30\n\tdo_syscall_64+0x43/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/sched/psi.c"], "versions": [{"version": "0e94682b73bf", "lessThan": "7caeb5457bd0", "status": "affected", "versionType": "git"}, {"version": "0e94682b73bf", "lessThan": "ec9c7aa08819", "status": "affected", "versionType": "git"}, {"version": "0e94682b73bf", "lessThan": "cca2b3feb701", "status": "affected", "versionType": "git"}, {"version": "0e94682b73bf", "lessThan": "c6879a4dcefe", "status": "affected", "versionType": "git"}, {"version": "0e94682b73bf", "lessThan": "c2dbe32d5db5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/sched/psi.c"], "versions": [{"version": "5.2", "status": "affected"}, {"version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.232", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.169", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.95", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.13", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/7caeb5457bd01ccba0df1d6f4872f20d28e50b38"}, {"url": "https://git.kernel.org/stable/c/ec9c7aa08819f976b2492fa63c41b5712d2924b5"}, {"url": "https://git.kernel.org/stable/c/cca2b3feb70170ef6f0fbc4b4d91eea235a2b73a"}, {"url": "https://git.kernel.org/stable/c/c6879a4dcefe92d870ab68cabaa9caeda4f2af5a"}, {"url": "https://git.kernel.org/stable/c/c2dbe32d5db5c4ead121cf86dabd5ab691fb47fe"}], "title": "sched/psi: Fix use-after-free in ep_remove_wait_queue()", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-17T17:37:08.537145Z", "id": "CVE-2023-52707", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-17T17:37:46.100Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.459Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/7caeb5457bd01ccba0df1d6f4872f20d28e50b38", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ec9c7aa08819f976b2492fa63c41b5712d2924b5", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/cca2b3feb70170ef6f0fbc4b4d91eea235a2b73a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c6879a4dcefe92d870ab68cabaa9caeda4f2af5a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c2dbe32d5db5c4ead121cf86dabd5ab691fb47fe", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/7caeb5457bd01ccba0df1d6f4872f20d28e50b38", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ec9c7aa08819f976b2492fa63c41b5712d2924b5", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/cca2b3feb70170ef6f0fbc4b4d91eea235a2b73a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c6879a4dcefe92d870ab68cabaa9caeda4f2af5a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c2dbe32d5db5c4ead121cf86dabd5ab691fb47fe", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.459Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52707", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-17T17:37:08.537145Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-17T17:37:09.497Z"}}], "cna": {"title": "sched/psi: Fix use-after-free in ep_remove_wait_queue()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0e94682b73bf", "lessThan": "7caeb5457bd0", "versionType": "git"}, {"status": "affected", "version": "0e94682b73bf", "lessThan": "ec9c7aa08819", "versionType": "git"}, {"status": "affected", "version": "0e94682b73bf", "lessThan": "cca2b3feb701", "versionType": "git"}, {"status": "affected", "version": "0e94682b73bf", "lessThan": "c6879a4dcefe", "versionType": "git"}, {"status": "affected", "version": "0e94682b73bf", "lessThan": "c2dbe32d5db5", "versionType": "git"}], "programFiles": ["kernel/sched/psi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.2"}, {"status": "unaffected", "version": "0", "lessThan": "5.2", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.232", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.169", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.95", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.13", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/sched/psi.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/7caeb5457bd01ccba0df1d6f4872f20d28e50b38"}, {"url": "https://git.kernel.org/stable/c/ec9c7aa08819f976b2492fa63c41b5712d2924b5"}, {"url": "https://git.kernel.org/stable/c/cca2b3feb70170ef6f0fbc4b4d91eea235a2b73a"}, {"url": "https://git.kernel.org/stable/c/c6879a4dcefe92d870ab68cabaa9caeda4f2af5a"}, {"url": "https://git.kernel.org/stable/c/c2dbe32d5db5c4ead121cf86dabd5ab691fb47fe"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/psi: Fix use-after-free in ep_remove_wait_queue()\n\nIf a non-root cgroup gets removed when there is a thread that registered\ntrigger and is polling on a pressure file within the cgroup, the polling\nwaitqueue gets freed in the following path:\n\n do_rmdir\n cgroup_rmdir\n kernfs_drain_open_files\n cgroup_file_release\n cgroup_pressure_release\n psi_trigger_destroy\n\nHowever, the polling thread still has a reference to the pressure file and\nwill access the freed waitqueue when the file is closed or upon exit:\n\n fput\n ep_eventpoll_release\n ep_free\n ep_remove_wait_queue\n remove_wait_queue\n\nThis results in use-after-free as pasted below.\n\nThe fundamental problem here is that cgroup_file_release() (and\nconsequently waitqueue's lifetime) is not tied to the file's real lifetime.\nUsing wake_up_pollfree() here might be less than ideal, but it is in line\nwith the comment at commit 42288cb44c4b (\"wait: add wake_up_pollfree()\")\nsince the waitqueue's lifetime is not tied to file's one and can be\nconsidered as another special case. While this would be fixable by somehow\nmaking cgroup_file_release() be tied to the fput(), it would require\nsizable refactoring at cgroups or higher layer which might be more\njustifiable if we identify more cases like this.\n\n BUG: KASAN: use-after-free in _raw_spin_lock_irqsave+0x60/0xc0\n Write of size 4 at addr ffff88810e625328 by task a.out/4404\n\n\tCPU: 19 PID: 4404 Comm: a.out Not tainted 6.2.0-rc6 #38\n\tHardware name: Amazon EC2 c5a.8xlarge/, BIOS 1.0 10/16/2017\n\tCall Trace:\n\t<TASK>\n\tdump_stack_lvl+0x73/0xa0\n\tprint_report+0x16c/0x4e0\n\tkasan_report+0xc3/0xf0\n\tkasan_check_range+0x2d2/0x310\n\t_raw_spin_lock_irqsave+0x60/0xc0\n\tremove_wait_queue+0x1a/0xa0\n\tep_free+0x12c/0x170\n\tep_eventpoll_release+0x26/0x30\n\t__fput+0x202/0x400\n\ttask_work_run+0x11d/0x170\n\tdo_exit+0x495/0x1130\n\tdo_group_exit+0x100/0x100\n\tget_signal+0xd67/0xde0\n\tarch_do_signal_or_restart+0x2a/0x2b0\n\texit_to_user_mode_prepare+0x94/0x100\n\tsyscall_exit_to_user_mode+0x20/0x40\n\tdo_syscall_64+0x52/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\t</TASK>\n\n Allocated by task 4404:\n\n\tkasan_set_track+0x3d/0x60\n\t__kasan_kmalloc+0x85/0x90\n\tpsi_trigger_create+0x113/0x3e0\n\tpressure_write+0x146/0x2e0\n\tcgroup_file_write+0x11c/0x250\n\tkernfs_fop_write_iter+0x186/0x220\n\tvfs_write+0x3d8/0x5c0\n\tksys_write+0x90/0x110\n\tdo_syscall_64+0x43/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\n Freed by task 4407:\n\n\tkasan_set_track+0x3d/0x60\n\tkasan_save_free_info+0x27/0x40\n\t____kasan_slab_free+0x11d/0x170\n\tslab_free_freelist_hook+0x87/0x150\n\t__kmem_cache_free+0xcb/0x180\n\tpsi_trigger_destroy+0x2e8/0x310\n\tcgroup_file_release+0x4f/0xb0\n\tkernfs_drain_open_files+0x165/0x1f0\n\tkernfs_drain+0x162/0x1a0\n\t__kernfs_remove+0x1fb/0x310\n\tkernfs_remove_by_name_ns+0x95/0xe0\n\tcgroup_addrm_files+0x67f/0x700\n\tcgroup_destroy_locked+0x283/0x3c0\n\tcgroup_rmdir+0x29/0x100\n\tkernfs_iop_rmdir+0xd1/0x140\n\tvfs_rmdir+0xfe/0x240\n\tdo_rmdir+0x13d/0x280\n\t__x64_sys_rmdir+0x2c/0x30\n\tdo_syscall_64+0x43/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T14:51:34.373Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52707", "state": "PUBLISHED", "dateUpdated": "2024-11-04T14:51:34.373Z", "dateReserved": "2024-03-07T14:49:46.891Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T15:22:55.315Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/psi: Fix use-after-free in ep_remove_wait_queue()\n\nIf a non-root cgroup gets removed when there is a thread that registered\ntrigger and is polling on a pressure file within the cgroup, the polling\nwaitqueue gets freed in the following path:\n\n do_rmdir\n cgroup_rmdir\n kernfs_drain_open_files\n cgroup_file_release\n cgroup_pressure_release\n psi_trigger_destroy\n\nHowever, the polling thread still has a reference to the pressure file and\nwill access the freed waitqueue when the file is closed or upon exit:\n\n fput\n ep_eventpoll_release\n ep_free\n ep_remove_wait_queue\n remove_wait_queue\n\nThis results in use-after-free as pasted below.\n\nThe fundamental problem here is that cgroup_file_release() (and\nconsequently waitqueue's lifetime) is not tied to the file's real lifetime.\nUsing wake_up_pollfree() here might be less than ideal, but it is in line\nwith the comment at commit 42288cb44c4b (\"wait: add wake_up_pollfree()\")\nsince the waitqueue's lifetime is not tied to file's one and can be\nconsidered as another special case. While this would be fixable by somehow\nmaking cgroup_file_release() be tied to the fput(), it would require\nsizable refactoring at cgroups or higher layer which might be more\njustifiable if we identify more cases like this.\n\n BUG: KASAN: use-after-free in _raw_spin_lock_irqsave+0x60/0xc0\n Write of size 4 at addr ffff88810e625328 by task a.out/4404\n\n\tCPU: 19 PID: 4404 Comm: a.out Not tainted 6.2.0-rc6 #38\n\tHardware name: Amazon EC2 c5a.8xlarge/, BIOS 1.0 10/16/2017\n\tCall Trace:\n\t<TASK>\n\tdump_stack_lvl+0x73/0xa0\n\tprint_report+0x16c/0x4e0\n\tkasan_report+0xc3/0xf0\n\tkasan_check_range+0x2d2/0x310\n\t_raw_spin_lock_irqsave+0x60/0xc0\n\tremove_wait_queue+0x1a/0xa0\n\tep_free+0x12c/0x170\n\tep_eventpoll_release+0x26/0x30\n\t__fput+0x202/0x400\n\ttask_work_run+0x11d/0x170\n\tdo_exit+0x495/0x1130\n\tdo_group_exit+0x100/0x100\n\tget_signal+0xd67/0xde0\n\tarch_do_signal_or_restart+0x2a/0x2b0\n\texit_to_user_mode_prepare+0x94/0x100\n\tsyscall_exit_to_user_mode+0x20/0x40\n\tdo_syscall_64+0x52/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\t</TASK>\n\n Allocated by task 4404:\n\n\tkasan_set_track+0x3d/0x60\n\t__kasan_kmalloc+0x85/0x90\n\tpsi_trigger_create+0x113/0x3e0\n\tpressure_write+0x146/0x2e0\n\tcgroup_file_write+0x11c/0x250\n\tkernfs_fop_write_iter+0x186/0x220\n\tvfs_write+0x3d8/0x5c0\n\tksys_write+0x90/0x110\n\tdo_syscall_64+0x43/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\n Freed by task 4407:\n\n\tkasan_set_track+0x3d/0x60\n\tkasan_save_free_info+0x27/0x40\n\t____kasan_slab_free+0x11d/0x170\n\tslab_free_freelist_hook+0x87/0x150\n\t__kmem_cache_free+0xcb/0x180\n\tpsi_trigger_destroy+0x2e8/0x310\n\tcgroup_file_release+0x4f/0xb0\n\tkernfs_drain_open_files+0x165/0x1f0\n\tkernfs_drain+0x162/0x1a0\n\t__kernfs_remove+0x1fb/0x310\n\tkernfs_remove_by_name_ns+0x95/0xe0\n\tcgroup_addrm_files+0x67f/0x700\n\tcgroup_destroy_locked+0x283/0x3c0\n\tcgroup_rmdir+0x29/0x100\n\tkernfs_iop_rmdir+0xd1/0x140\n\tvfs_rmdir+0xfe/0x240\n\tdo_rmdir+0x13d/0x280\n\t__x64_sys_rmdir+0x2c/0x30\n\tdo_syscall_64+0x43/0x90\n\tentry_SYSCALL_64_after_hwframe+0x63/0xcd"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: sched/psi: corrige el use after free en ep_remove_wait_queue() si se elimina un cgroup no ra\u00edz cuando hay un subproceso que registr\u00f3 un activador y est\u00e1 sondeando un archivo de presi\u00f3n dentro en cgroup, la cola de espera de sondeo se libera en la siguiente ruta: do_rmdir cgroup_rmdir kernfs_drain_open_files cgroup_file_release cgroup_pression_release psi_trigger_destroy Sin embargo, el hilo de sondeo a\u00fan tiene una referencia al archivo de presi\u00f3n y acceder\u00e1 a la cola de espera liberada cuando el archivo se cierre o al salir: fput ep_eventpoll_release ep_free ep_remove_wait_queue remove_wait_queue Esto da como resultado un use after free como se pega a continuaci\u00f3n. El problema fundamental aqu\u00ed es que cgroup_file_release() (y en consecuencia la vida \u00fatil de la cola de espera) no est\u00e1 ligada a la vida real del archivo. Usar wake_up_pollfree() aqu\u00ed puede no ser ideal, pero est\u00e1 en l\u00ednea con el comentario en la confirmaci\u00f3n 42288cb44c4b (\"espera: agregar wake_up_pollfree()\") ya que la vida \u00fatil de la cola de espera no est\u00e1 ligada a la del archivo y puede considerarse como otro caso especial. . Si bien esto se podr\u00eda solucionar haciendo que cgroup_file_release() est\u00e9 vinculado de alguna manera a fput(), requerir\u00eda una refactorizaci\u00f3n considerable en cgroups o en una capa superior, lo que podr\u00eda ser m\u00e1s justificable si identificamos m\u00e1s casos como este. ERROR: KASAN: use-after-free en _raw_spin_lock_irqsave+0x60/0xc0 Escritura de tama\u00f1o 4 en la direcci\u00f3n ffff88810e625328 por tarea a.out/4404 CPU: 19 PID: 4404 Comm: a.out No contaminado 6.2.0-rc6 #38 Hardware nombre: Amazon EC2 c5a.8xlarge/, BIOS 1.0 16/10/2017 Seguimiento de llamadas: dump_stack_lvl+0x73/0xa0 print_report+0x16c/0x4e0 kasan_report+0xc3/0xf0 kasan_check_range+0x2d2/0x310 _raw_spin_lock_irqsave+0x60/0x c0 remove_wait_queue+0x1a /0xa0 ep_free+0x12c/0x170 ep_eventpoll_release+0x26/0x30 __fput+0x202/0x400 task_work_run+0x11d/0x170 do_exit+0x495/0x1130 do_group_exit+0x100/0x100 get_signal+0xd67/0xde0 arch _do_signal_or_restart+0x2a/0x2b0 exit_to_user_mode_prepare+0x94/0x100 syscall_exit_to_user_mode+0x20 /0x40 do_syscall_64+0x52/0x90 Entry_SYSCALL_64_after_hwframe+0x63/0xcd Asignado por tarea 4404: kasan_set_track+0x3d/0x60 __kasan_kmalloc+0x85/0x90 psi_trigger_create+0x113/0x3e0 Pressure_write+0x1 46/0x2e0 cgroup_file_write+0x11c/0x250 kernfs_fop_write_iter+0x186/ 0x220 vfs_write+0x3d8/0x5c0 ksys_write+0x90/0x110 do_syscall_64+0x43/0x90 Entry_SYSCALL_64_after_hwframe+0x63/0xcd Liberado por la tarea 4407: kasan_set_track+0x3d/0x60 kasan_save_free_info+0x27/ 0x40 ____kasan_slab_free+0x11d/0x170 slab_free_freelist_hook+0x87/0x150 __kmem_cache_free+0xcb/ 0x180 psi_trigger_destroy+0x2e8/0x310 cgroup_file_release+0x4f/0xb0 kernfs_drain_open_files+0x165/0x1f0 kernfs_drain+0x162/0x1a0 __kernfs_remove+0x1fb/0x310 ns+0x95/0xe0 cgroup_addrm_files+0x67f/0x700 cgroup_destroy_locked+0x283/0x3c0 cgroup_rmdir+0x29/0x100 kernfs_iop_rmdir+0xd1/ 0x140 vfs_rmdir+0xfe/0x240 do_rmdir+0x13d/0x280 __x64_sys_rmdir+0x2c/0x30 do_syscall_64+0x43/0x90 Entry_SYSCALL_64_after_hwframe+0x63/0xcd"}], "id": "CVE-2023-52707", "lastModified": "2024-05-21T16:53:56.550", "metrics": {}, "published": "2024-05-21T16:15:12.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7caeb5457bd01ccba0df1d6f4872f20d28e50b38"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c2dbe32d5db5c4ead121cf86dabd5ab691fb47fe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c6879a4dcefe92d870ab68cabaa9caeda4f2af5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cca2b3feb70170ef6f0fbc4b4d91eea235a2b73a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ec9c7aa08819f976b2492fa63c41b5712d2924b5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2023:6583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}, {"advisory": "RHSA-2023:6583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}, {"advisory": "RHSA-2024:4823", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.75.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-07-24T00:00:00Z"}, {"advisory": "RHSA-2024:4831", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.75.1.rt14.360.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-07-24T00:00:00Z"}], "bugzilla": {"description": "kernel: sched/psi: Fix use-after-free in ep_remove_wait_queue()", "id": "2282615", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282615"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsched/psi: Fix use-after-free in ep_remove_wait_queue()\nIf a non-root cgroup gets removed when there is a thread that registered\ntrigger and is polling on a pressure file within the cgroup, the polling\nwaitqueue gets freed in the following path:\ndo_rmdir\ncgroup_rmdir\nkernfs_drain_open_files\ncgroup_file_release\ncgroup_pressure_release\npsi_trigger_destroy\nHowever, the polling thread still has a reference to the pressure file and\nwill access the freed waitqueue when the file is closed or upon exit:\nfput\nep_eventpoll_release\nep_free\nep_remove_wait_queue\nremove_wait_queue\nThis results in use-after-free as pasted below.\nThe fundamental problem here is that cgroup_file_release() (and\nconsequently waitqueue's lifetime) is not tied to the file's real lifetime.\nUsing wake_up_pollfree() here might be less than ideal, but it is in line\nwith the comment at commit 42288cb44c4b (\"wait: add wake_up_pollfree()\")\nsince the waitqueue's lifetime is not tied to file's one and can be\nconsidered as another special case. While this would be fixable by somehow\nmaking cgroup_file_release() be tied to the fput(), it would require\nsizable refactoring at cgroups or higher layer which might be more\njustifiable if we identify more cases like this.\nBUG: KASAN: use-after-free in _raw_spin_lock_irqsave+0x60/0xc0\nWrite of size 4 at addr ffff88810e625328 by task a.out/4404\nCPU: 19 PID: 4404 Comm: a.out Not tainted 6.2.0-rc6 #38\nHardware name: Amazon EC2 c5a.8xlarge/, BIOS 1.0 10/16/2017\nCall Trace:\n<TASK>\ndump_stack_lvl+0x73/0xa0\nprint_report+0x16c/0x4e0\nkasan_report+0xc3/0xf0\nkasan_check_range+0x2d2/0x310\n_raw_spin_lock_irqsave+0x60/0xc0\nremove_wait_queue+0x1a/0xa0\nep_free+0x12c/0x170\nep_eventpoll_release+0x26/0x30\n__fput+0x202/0x400\ntask_work_run+0x11d/0x170\ndo_exit+0x495/0x1130\ndo_group_exit+0x100/0x100\nget_signal+0xd67/0xde0\narch_do_signal_or_restart+0x2a/0x2b0\nexit_to_user_mode_prepare+0x94/0x100\nsyscall_exit_to_user_mode+0x20/0x40\ndo_syscall_64+0x52/0x90\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n</TASK>\nAllocated by task 4404:\nkasan_set_track+0x3d/0x60\n__kasan_kmalloc+0x85/0x90\npsi_trigger_create+0x113/0x3e0\npressure_write+0x146/0x2e0\ncgroup_file_write+0x11c/0x250\nkernfs_fop_write_iter+0x186/0x220\nvfs_write+0x3d8/0x5c0\nksys_write+0x90/0x110\ndo_syscall_64+0x43/0x90\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nFreed by task 4407:\nkasan_set_track+0x3d/0x60\nkasan_save_free_info+0x27/0x40\n____kasan_slab_free+0x11d/0x170\nslab_free_freelist_hook+0x87/0x150\n__kmem_cache_free+0xcb/0x180\npsi_trigger_destroy+0x2e8/0x310\ncgroup_file_release+0x4f/0xb0\nkernfs_drain_open_files+0x165/0x1f0\nkernfs_drain+0x162/0x1a0\n__kernfs_remove+0x1fb/0x310\nkernfs_remove_by_name_ns+0x95/0xe0\ncgroup_addrm_files+0x67f/0x700\ncgroup_destroy_locked+0x283/0x3c0\ncgroup_rmdir+0x29/0x100\nkernfs_iop_rmdir+0xd1/0x140\nvfs_rmdir+0xfe/0x240\ndo_rmdir+0x13d/0x280\n__x64_sys_rmdir+0x2c/0x30\ndo_syscall_64+0x43/0x90\nentry_SYSCALL_64_after_hwframe+0x63/0xcd"], "name": "CVE-2023-52707", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52707\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52707\nhttps://lore.kernel.org/linux-cve-announce/2024052158-CVE-2023-52707-e048@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 5.4.232, kernel 5.10.169, kernel 5.15.95, kernel 6.1.13, kernel 6.2"}