CVE-2023-53629 - Vulnerability Details

Link	Providers
https://git.kernel.org/stable/c/724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba
https://git.kernel.org/stable/c/a2de9f9b686c71b4fa3663ae374f5f643c46a446
https://git.kernel.org/stable/c/a3b0e9ac3c2447008db942d51f593841d8329e99

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: fs: dlm: fix use after free in midcomms commit While working on processing dlm message in softirq context I experienced the following KASAN use-after-free warning: [ 151.760477] ================================================================== [ 151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347 [ 151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828 [ 151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014 [ 151.768726] Call Trace: [ 151.769277] <TASK> [ 151.769748] dump_stack_lvl+0x5b/0x86 [ 151.770556] print_report+0x180/0x4c8 [ 151.771378] ? kasan_complete_mode_report_info+0x7c/0x1e0 [ 151.772241] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.773069] kasan_report+0x93/0x1a0 [ 151.773668] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.774514] __asan_load4+0x7e/0xa0 [ 151.775089] dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.775890] ? create_message.isra.29.constprop.64+0x57/0xc0 [ 151.776770] send_common+0x19f/0x1b0 [ 151.777342] ? remove_from_waiters+0x60/0x60 [ 151.778017] ? lock_downgrade+0x410/0x410 [ 151.778648] ? __this_cpu_preempt_check+0x13/0x20 [ 151.779421] ? rcu_lockdep_current_cpu_online+0x88/0xc0 [ 151.780292] _convert_lock+0x46/0x150 [ 151.780893] convert_lock+0x7b/0xc0 [ 151.781459] dlm_lock+0x3ac/0x580 [ 151.781993] ? 0xffffffffc0540000 [ 151.782522] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.783379] ? dlm_scan_rsbs+0xa70/0xa70 [ 151.784003] ? preempt_count_sub+0xd6/0x130 [ 151.784661] ? is_module_address+0x47/0x70 [ 151.785309] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.786166] ? 0xffffffffc0540000 [ 151.786693] ? lockdep_init_map_type+0xc3/0x360 [ 151.787414] ? 0xffffffffc0540000 [ 151.787947] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture] [ 151.789004] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.789858] ? 0xffffffffc0540000 [ 151.790392] ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture] [ 151.791347] ? delay_tsc+0x94/0xc0 [ 151.791898] torture_ex_iter+0xc3/0xea [dlm_locktorture] [ 151.792735] ? torture_start+0x30/0x30 [dlm_locktorture] [ 151.793606] lock_torture+0x177/0x270 [dlm_locktorture] [ 151.794448] ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture] [ 151.795539] ? lock_torture_stats+0x80/0x80 [dlm_locktorture] [ 151.796476] ? do_raw_spin_lock+0x11e/0x1e0 [ 151.797152] ? mark_held_locks+0x34/0xb0 [ 151.797784] ? _raw_spin_unlock_irqrestore+0x30/0x70 [ 151.798581] ? __kthread_parkme+0x79/0x110 [ 151.799246] ? trace_preempt_on+0x2a/0xf0 [ 151.799902] ? __kthread_parkme+0x79/0x110 [ 151.800579] ? preempt_count_sub+0xd6/0x130 [ 151.801271] ? __kasan_check_read+0x11/0x20 [ 151.801963] ? __kthread_parkme+0xec/0x110 [ 151.802630] ? lock_torture_stats+0x80/0x80 [dlm_locktorture] [ 151.803569] kthread+0x192/0x1d0 [ 151.804104] ? kthread_complete_and_exit+0x30/0x30 [ 151.804881] ret_from_fork+0x1f/0x30 [ 151.805480] </TASK> [ 151.806111] Allocated by task 1347: [ 151.806681] kasan_save_stack+0x26/0x50 [ 151.807308] kasan_set_track+0x25/0x30 [ 151.807920] kasan_save_alloc_info+0x1e/0x30 [ 151.808609] __kasan_slab_alloc+0x63/0x80 [ 151.809263] kmem_cache_alloc+0x1ad/0x830 [ 151.809916] dlm_allocate_mhandle+0x17/0x20 [ 151.810590] dlm_midcomms_get_mhandle+0x96/0x260 [ 151.811344] _create_message+0x95/0x180 [ 151.811994] create_message.isra.29.constprop.64+0x57/0xc0 [ 151.812880] send_common+0x129/0x1b0 [ 151.813467] _convert_lock+0x46/0x150 [ 151.814074] convert_lock+0x7b/0xc0 [ 151.814648] dlm_lock+0x3ac/0x580 [ 151.815199] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture] [ 151.816258] torture_ex_iter+0xc3/0xea [dlm_locktorture] [ 151.817129] lock_t ---truncated---
Title		fs: dlm: fix use after free in midcomms commit
References		https://git.kernel.org/stable/c/724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba https://git.kernel.org/stable/c/a2de9f9b686c71b4fa3663ae374f5f643c46a446 https://git.kernel.org/stable/c/a3b0e9ac3c2447008db942d51f593841d8329e99

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-53629", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-07T15:16:59.656Z", "datePublished": "2025-10-07T15:19:32.960Z", "dateUpdated": "2025-10-07T15:19:32.960Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-10-07T15:19:32.960Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: dlm: fix use after free in midcomms commit\n\nWhile working on processing dlm message in softirq context I experienced\nthe following KASAN use-after-free warning:\n\n[ 151.760477] ==================================================================\n[ 151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347\n\n[ 151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828\n[ 151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014\n[ 151.768726] Call Trace:\n[ 151.769277] <TASK>\n[ 151.769748] dump_stack_lvl+0x5b/0x86\n[ 151.770556] print_report+0x180/0x4c8\n[ 151.771378] ? kasan_complete_mode_report_info+0x7c/0x1e0\n[ 151.772241] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.773069] kasan_report+0x93/0x1a0\n[ 151.773668] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.774514] __asan_load4+0x7e/0xa0\n[ 151.775089] dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.775890] ? create_message.isra.29.constprop.64+0x57/0xc0\n[ 151.776770] send_common+0x19f/0x1b0\n[ 151.777342] ? remove_from_waiters+0x60/0x60\n[ 151.778017] ? lock_downgrade+0x410/0x410\n[ 151.778648] ? __this_cpu_preempt_check+0x13/0x20\n[ 151.779421] ? rcu_lockdep_current_cpu_online+0x88/0xc0\n[ 151.780292] _convert_lock+0x46/0x150\n[ 151.780893] convert_lock+0x7b/0xc0\n[ 151.781459] dlm_lock+0x3ac/0x580\n[ 151.781993] ? 0xffffffffc0540000\n[ 151.782522] ? torture_stop+0x120/0x120 [dlm_locktorture]\n[ 151.783379] ? dlm_scan_rsbs+0xa70/0xa70\n[ 151.784003] ? preempt_count_sub+0xd6/0x130\n[ 151.784661] ? is_module_address+0x47/0x70\n[ 151.785309] ? torture_stop+0x120/0x120 [dlm_locktorture]\n[ 151.786166] ? 0xffffffffc0540000\n[ 151.786693] ? lockdep_init_map_type+0xc3/0x360\n[ 151.787414] ? 0xffffffffc0540000\n[ 151.787947] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[ 151.789004] ? torture_stop+0x120/0x120 [dlm_locktorture]\n[ 151.789858] ? 0xffffffffc0540000\n[ 151.790392] ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture]\n[ 151.791347] ? delay_tsc+0x94/0xc0\n[ 151.791898] torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[ 151.792735] ? torture_start+0x30/0x30 [dlm_locktorture]\n[ 151.793606] lock_torture+0x177/0x270 [dlm_locktorture]\n[ 151.794448] ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture]\n[ 151.795539] ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[ 151.796476] ? do_raw_spin_lock+0x11e/0x1e0\n[ 151.797152] ? mark_held_locks+0x34/0xb0\n[ 151.797784] ? _raw_spin_unlock_irqrestore+0x30/0x70\n[ 151.798581] ? __kthread_parkme+0x79/0x110\n[ 151.799246] ? trace_preempt_on+0x2a/0xf0\n[ 151.799902] ? __kthread_parkme+0x79/0x110\n[ 151.800579] ? preempt_count_sub+0xd6/0x130\n[ 151.801271] ? __kasan_check_read+0x11/0x20\n[ 151.801963] ? __kthread_parkme+0xec/0x110\n[ 151.802630] ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[ 151.803569] kthread+0x192/0x1d0\n[ 151.804104] ? kthread_complete_and_exit+0x30/0x30\n[ 151.804881] ret_from_fork+0x1f/0x30\n[ 151.805480] </TASK>\n\n[ 151.806111] Allocated by task 1347:\n[ 151.806681] kasan_save_stack+0x26/0x50\n[ 151.807308] kasan_set_track+0x25/0x30\n[ 151.807920] kasan_save_alloc_info+0x1e/0x30\n[ 151.808609] __kasan_slab_alloc+0x63/0x80\n[ 151.809263] kmem_cache_alloc+0x1ad/0x830\n[ 151.809916] dlm_allocate_mhandle+0x17/0x20\n[ 151.810590] dlm_midcomms_get_mhandle+0x96/0x260\n[ 151.811344] _create_message+0x95/0x180\n[ 151.811994] create_message.isra.29.constprop.64+0x57/0xc0\n[ 151.812880] send_common+0x129/0x1b0\n[ 151.813467] _convert_lock+0x46/0x150\n[ 151.814074] convert_lock+0x7b/0xc0\n[ 151.814648] dlm_lock+0x3ac/0x580\n[ 151.815199] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[ 151.816258] torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[ 151.817129] lock_t\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/dlm/midcomms.c"], "versions": [{"version": "489d8e559c6596eb08e16447d9830bc39afbe54e", "lessThan": "a3b0e9ac3c2447008db942d51f593841d8329e99", "status": "affected", "versionType": "git"}, {"version": "489d8e559c6596eb08e16447d9830bc39afbe54e", "lessThan": "a2de9f9b686c71b4fa3663ae374f5f643c46a446", "status": "affected", "versionType": "git"}, {"version": "489d8e559c6596eb08e16447d9830bc39afbe54e", "lessThan": "724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/dlm/midcomms.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.20", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.3", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "5.14", "versionEndExcluding": "6.1.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.2.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a3b0e9ac3c2447008db942d51f593841d8329e99"}, {"url": "https://git.kernel.org/stable/c/a2de9f9b686c71b4fa3663ae374f5f643c46a446"}, {"url": "https://git.kernel.org/stable/c/724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba"}], "title": "fs: dlm: fix use after free in midcomms commit", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: dlm: fix use after free in midcomms commit\n\nWhile working on processing dlm message in softirq context I experienced\nthe following KASAN use-after-free warning:\n\n[ 151.760477] ==================================================================\n[ 151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347\n\n[ 151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828\n[ 151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014\n[ 151.768726] Call Trace:\n[ 151.769277] <TASK>\n[ 151.769748] dump_stack_lvl+0x5b/0x86\n[ 151.770556] print_report+0x180/0x4c8\n[ 151.771378] ? kasan_complete_mode_report_info+0x7c/0x1e0\n[ 151.772241] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.773069] kasan_report+0x93/0x1a0\n[ 151.773668] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.774514] __asan_load4+0x7e/0xa0\n[ 151.775089] dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[ 151.775890] ? create_message.isra.29.constprop.64+0x57/0xc0\n[ 151.776770] send_common+0x19f/0x1b0\n[ 151.777342] ? remove_from_waiters+0x60/0x60\n[ 151.778017] ? lock_downgrade+0x410/0x410\n[ 151.778648] ? __this_cpu_preempt_check+0x13/0x20\n[ 151.779421] ? rcu_lockdep_current_cpu_online+0x88/0xc0\n[ 151.780292] _convert_lock+0x46/0x150\n[ 151.780893] convert_lock+0x7b/0xc0\n[ 151.781459] dlm_lock+0x3ac/0x580\n[ 151.781993] ? 0xffffffffc0540000\n[ 151.782522] ? torture_stop+0x120/0x120 [dlm_locktorture]\n[ 151.783379] ? dlm_scan_rsbs+0xa70/0xa70\n[ 151.784003] ? preempt_count_sub+0xd6/0x130\n[ 151.784661] ? is_module_address+0x47/0x70\n[ 151.785309] ? torture_stop+0x120/0x120 [dlm_locktorture]\n[ 151.786166] ? 0xffffffffc0540000\n[ 151.786693] ? lockdep_init_map_type+0xc3/0x360\n[ 151.787414] ? 0xffffffffc0540000\n[ 151.787947] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[ 151.789004] ? torture_stop+0x120/0x120 [dlm_locktorture]\n[ 151.789858] ? 0xffffffffc0540000\n[ 151.790392] ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture]\n[ 151.791347] ? delay_tsc+0x94/0xc0\n[ 151.791898] torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[ 151.792735] ? torture_start+0x30/0x30 [dlm_locktorture]\n[ 151.793606] lock_torture+0x177/0x270 [dlm_locktorture]\n[ 151.794448] ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture]\n[ 151.795539] ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[ 151.796476] ? do_raw_spin_lock+0x11e/0x1e0\n[ 151.797152] ? mark_held_locks+0x34/0xb0\n[ 151.797784] ? _raw_spin_unlock_irqrestore+0x30/0x70\n[ 151.798581] ? __kthread_parkme+0x79/0x110\n[ 151.799246] ? trace_preempt_on+0x2a/0xf0\n[ 151.799902] ? __kthread_parkme+0x79/0x110\n[ 151.800579] ? preempt_count_sub+0xd6/0x130\n[ 151.801271] ? __kasan_check_read+0x11/0x20\n[ 151.801963] ? __kthread_parkme+0xec/0x110\n[ 151.802630] ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[ 151.803569] kthread+0x192/0x1d0\n[ 151.804104] ? kthread_complete_and_exit+0x30/0x30\n[ 151.804881] ret_from_fork+0x1f/0x30\n[ 151.805480] </TASK>\n\n[ 151.806111] Allocated by task 1347:\n[ 151.806681] kasan_save_stack+0x26/0x50\n[ 151.807308] kasan_set_track+0x25/0x30\n[ 151.807920] kasan_save_alloc_info+0x1e/0x30\n[ 151.808609] __kasan_slab_alloc+0x63/0x80\n[ 151.809263] kmem_cache_alloc+0x1ad/0x830\n[ 151.809916] dlm_allocate_mhandle+0x17/0x20\n[ 151.810590] dlm_midcomms_get_mhandle+0x96/0x260\n[ 151.811344] _create_message+0x95/0x180\n[ 151.811994] create_message.isra.29.constprop.64+0x57/0xc0\n[ 151.812880] send_common+0x129/0x1b0\n[ 151.813467] _convert_lock+0x46/0x150\n[ 151.814074] convert_lock+0x7b/0xc0\n[ 151.814648] dlm_lock+0x3ac/0x580\n[ 151.815199] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[ 151.816258] torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[ 151.817129] lock_t\n---truncated---"}], "id": "CVE-2023-53629", "lastModified": "2025-10-07T16:15:45.933", "metrics": {}, "published": "2025-10-07T16:15:45.933", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a2de9f9b686c71b4fa3663ae374f5f643c46a446"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a3b0e9ac3c2447008db942d51f593841d8329e99"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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