CVE-2026-53083
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix RCU stall in bpf_fd_array_map_clear() Add a missing cond_resched() in bpf_fd_array_map_clear() loop. For PROG_ARRAY maps with many entries this loop calls prog_array_map_poke_run() per entry which can be expensive, and without yielding this can cause RCU stalls under load: rcu: Stack dump where RCU GP kthread last ran: CPU: 0 UID: 0 PID: 30932 Comm: kworker/0:2 Not tainted 6.14.0-13195-g967e8def1100 #2 PREEMPT(undef) Workqueue: events prog_array_map_clear_deferred RIP: 0010:write_comp_data+0x38/0x90 kernel/kcov.c:246 Call Trace: <TASK> prog_array_map_poke_run+0x77/0x380 kernel/bpf/arraymap.c:1096 __fd_array_map_delete_elem+0x197/0x310 kernel/bpf/arraymap.c:925 bpf_fd_array_map_clear kernel/bpf/arraymap.c:1000 [inline] prog_array_map_clear_deferred+0x119/0x1b0 kernel/bpf/arraymap.c:1141 process_one_work+0x898/0x19d0 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x770/0x10b0 kernel/workqueue.c:3400 kthread+0x465/0x880 kernel/kthread.c:464 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x19/0x30 arch/x86/entry/entry_64.S:245 </TASK>
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-06-24 17:17:22.470000
Last modified
2026-10-30 13:19:09.947000
View original CVE JSON
{
"id": "CVE-2026-53083",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-06-24T17:17:22.470",
"lastModified": "2026-10-30T13:19:09.947",
"vulnStatus": "Modified",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix RCU stall in bpf_fd_array_map_clear()\n\nAdd a missing cond_resched() in bpf_fd_array_map_clear() loop.\n\nFor PROG_ARRAY maps with many entries this loop calls\nprog_array_map_poke_run() per entry which can be expensive, and\nwithout yielding this can cause RCU stalls under load:\n\n rcu: Stack dump where RCU GP kthread last ran:\n CPU: 0 UID: 0 PID: 30932 Comm: kworker/0:2 Not tainted 6.14.0-13195-g967e8def1100 #2 PREEMPT(undef)\n Workqueue: events prog_array_map_clear_deferred\n RIP: 0010:write_comp_data+0x38/0x90 kernel/kcov.c:246\n Call Trace:\n <TASK>\n prog_array_map_poke_run+0x77/0x380 kernel/bpf/arraymap.c:1096\n __fd_array_map_delete_elem+0x197/0x310 kernel/bpf/arraymap.c:925\n bpf_fd_array_map_clear kernel/bpf/arraymap.c:1000 [inline]\n prog_array_map_clear_deferred+0x119/0x1b0 kernel/bpf/arraymap.c:1141\n process_one_work+0x898/0x19d0 kernel/workqueue.c:3238\n process_scheduled_works kernel/workqueue.c:3319 [inline]\n worker_thread+0x770/0x10b0 kernel/workqueue.c:3400\n kthread+0x465/0x880 kernel/kthread.c:464\n ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:153\n ret_from_fork_asm+0x19/0x30 arch/x86/entry/entry_64.S:245\n </TASK>"
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
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"type": "Primary",
"description": [
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