bpf: Fix RCU stall in bpf_fd_array_map_clear()
Summary
| CVE | CVE-2026-53083 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-24 17:17:22 UTC |
| Updated | 2026-07-14 15:26:52 UTC |
| 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> |
Risk And Classification
EPSS: 0.001560000 probability, percentile 0.051960000 (date 2026-07-14)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected da765a2f599304a81a25e77908d1790414ecdbb6 b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd git | Not specified |
| CNA | Linux | Linux | affected da765a2f599304a81a25e77908d1790414ecdbb6 71ddb7defc442ab38c53123c384fedbfd8410a15 git | Not specified |
| CNA | Linux | Linux | affected da765a2f599304a81a25e77908d1790414ecdbb6 e1ed678855e315f90c70c1723e94157a9a82e660 git | Not specified |
| CNA | Linux | Linux | affected da765a2f599304a81a25e77908d1790414ecdbb6 67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a git | Not specified |
| CNA | Linux | Linux | affected da765a2f599304a81a25e77908d1790414ecdbb6 4406942e65ca128c56c67443832988873c21d2e9 git | Not specified |
| CNA | Linux | Linux | affected 5.5 | Not specified |
| CNA | Linux | Linux | unaffected 5.5 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.141 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.91 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.33 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.10 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/71ddb7defc442ab38c53123c384fedbfd8410a15 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4406942e65ca128c56c67443832988873c21d2e9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e1ed678855e315f90c70c1723e94157a9a82e660 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.