CVE-2023-53213

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-09-15. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()

Fix a slab-out-of-bounds read that occurs in kmemdup() called from brcmf_get_assoc_ies(). The bug could occur when assoc_info->req_len, data from a URB provided by a USB device, is bigger than the size of buffer which is defined as WL_EXTRA_BUF_MAX.

Add the size check for req_len/resp_len of assoc_info.

Found by a modified version of syzkaller.

[ 46.592467][ T7] ================================================================== [ 46.594687][ T7] BUG: KASAN: slab-out-of-bounds in kmemdup+0x3e/0x50 [ 46.596572][ T7] Read of size 3014656 at addr ffff888019442000 by task kworker/0:1/7 [ 46.598575][ T7] [ 46.599157][ T7] CPU: 0 PID: 7 Comm: kworker/0:1 Tainted: G O 5.14.0+ #145 [ 46.601333][ T7] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 46.604360][ T7] Workqueue: events brcmf_fweh_event_worker [ 46.605943][ T7] Call Trace: [ 46.606584][ T7] dump_stack_lvl+0x8e/0xd1 [ 46.607446][ T7] print_address_description.constprop.0.cold+0x93/0x334 [ 46.608610][ T7] ? kmemdup+0x3e/0x50 [ 46.609341][ T7] kasan_report.cold+0x79/0xd5 [ 46.610151][ T7] ? kmemdup+0x3e/0x50 [ 46.610796][ T7] kasan_check_range+0x14e/0x1b0 [ 46.611691][ T7] memcpy+0x20/0x60 [ 46.612323][ T7] kmemdup+0x3e/0x50 [ 46.612987][ T7] brcmf_get_assoc_ies+0x967/0xf60 [ 46.613904][ T7] ? brcmf_notify_vif_event+0x3d0/0x3d0 [ 46.614831][ T7] ? lock_chain_count+0x20/0x20 [ 46.615683][ T7] ? mark_lock.part.0+0xfc/0x2770 [ 46.616552][ T7] ? lock_chain_count+0x20/0x20 [ 46.617409][ T7] ? mark_lock.part.0+0xfc/0x2770 [ 46.618244][ T7] ? lock_chain_count+0x20/0x20 [ 46.619024][ T7] brcmf_bss_connect_done.constprop.0+0x241/0x2e0 [ 46.620019][ T7] ? brcmf_parse_configure_security.isra.0+0x2a0/0x2a0 [ 46.620818][ T7] ? __lock_acquire+0x181f/0x5790 [ 46.621462][ T7] brcmf_notify_connect_status+0x448/0x1950 [ 46.622134][ T7] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 46.622736][ T7] ? brcmf_cfg80211_join_ibss+0x7b0/0x7b0 [ 46.623390][ T7] ? find_held_lock+0x2d/0x110 [ 46.623962][ T7] ? brcmf_fweh_event_worker+0x19f/0xc60 [ 46.624603][ T7] ? mark_held_locks+0x9f/0xe0 [ 46.625145][ T7] ? lockdep_hardirqs_on_prepare+0x3e0/0x3e0 [ 46.625871][ T7] ? brcmf_cfg80211_join_ibss+0x7b0/0x7b0 [ 46.626545][ T7] brcmf_fweh_call_event_handler.isra.0+0x90/0x100 [ 46.627338][ T7] brcmf_fweh_event_worker+0x557/0xc60 [ 46.627962][ T7] ? brcmf_fweh_call_event_handler.isra.0+0x100/0x100 [ 46.628736][ T7] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 46.629396][ T7] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 46.629970][ T7] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 46.630649][ T7] process_one_work+0x92b/0x1460 [ 46.631205][ T7] ? pwq_dec_nr_in_flight+0x330/0x330 [ 46.631821][ T7] ? rwlock_bug.part.0+0x90/0x90 [ 46.632347][ T7] worker_thread+0x95/0xe00 [ 46.632832][ T7] ? __kthread_parkme+0x115/0x1e0 [ 46.633393][ T7] ? process_one_work+0x1460/0x1460 [ 46.633957][ T7] kthread+0x3a1/0x480 [ 46.634369][ T7] ? set_kthread_struct+0x120/0x120 [ 46.634933][ T7] ret_from_fork+0x1f/0x30 [ 46.635431][ T7] [ 46.635687][ T7] Allocated by task 7: [ 46.636151][ T7] kasan_save_stack+0x1b/0x40 [ 46.636628][ T7] __kasan_kmalloc+0x7c/0x90 [ 46.637108][ T7] kmem_cache_alloc_trace+0x19e/0x330 [ 46.637696][ T7] brcmf_cfg80211_attach+0x4a0/0x4040 [ 46.638275][ T7] brcmf_attach+0x389/0xd40 [ 46.638739][ T7] brcmf_usb_probe+0x12de/0x1690 [ 46.639279][ T7] usb_probe_interface+0x2aa/0x760 [ 46.639820][ T7] really_probe+0x205/0xb70 [ 46.640342][ T7] __driver_probe_device+0 ---truncated---

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 15, 2025

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0da40e018fd034d87c9460123fa7f897b69fdee7
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/21bee3e649d87f78fe8aef6ae02edd3d6f310fd0
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/228186629ea970cc78b7d7d5f593f2d32fddf9f6
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e29661611e6e71027159a3140e818ef3b99f32dd
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/936a23293bbb3332bdf4cdb9c1496e80cb0bc2c8
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/549825602e3e6449927ca1ea1a08fd89868439df
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/425eea395f1f5ae349fb55f7fe51d833a5324bfe
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/39f9bd880abac6068bedb24a4e16e7bd26bf92da
generic

wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ac5305e5d227b9af3aae25fa83380d3ff0225b73

Vendor Advisories for CVE-2023-53213(10)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-193.178.1.el8_22025-12-17redhat
redhatkernel-0:4.18.0-305.179.1.el8_42025-12-04redhat
redhatkernel-rt-0:5.14.0-70.153.1.rt21.225.el9_02025-11-12redhat
redhatkernel-0:5.14.0-284.146.1.el9_22025-11-12redhat
redhatkernel-0:4.18.0-477.118.1.el8_82025-11-12redhat
redhatkernel-0:4.18.0-372.168.1.el8_62025-11-12redhat
redhatkernel-0:5.14.0-70.153.1.el9_02025-11-12redhat
redhatkernel-rt-0:5.14.0-284.146.1.rt14.431.el9_22025-11-12redhat
redhatkernel-0:4.18.0-513.5.1.el8_92023-11-14redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
linuxKernel @ 4.14.315—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-05 10:20 UTCEG score recompute
  4. 2026-08-05 10:20 UTCVendor advisory
  5. 2026-08-05 10:20 UTCGHSA enrichment
  6. 2026-08-04 10:59 UTCEG score recompute
  7. 2026-08-04 10:59 UTCVendor advisory
  8. 2026-08-04 10:59 UTCGHSA enrichment
  9. 2026-08-04 10:36 UTCEPSS rescore
  10. 2026-08-04 09:33 UTCEG score recompute
  11. 2026-08-04 09:33 UTCVendor advisory
  12. 2026-08-04 09:33 UTCGHSA enrichment
  13. 2026-08-03 10:34 UTCEPSS rescore
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  21. 2026-07-25 14:16 UTCEPSS rescore
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  23. 2026-07-23 20:11 UTCOSV refresh
  24. 2026-07-23 14:16 UTCEPSS rescore
  25. 2026-07-23 02:29 UTCEG score recompute
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  1. 2026-07-22 23:16 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
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  26. 2026-07-06 16:26 UTCEPSS rescore
  27. 2026-07-06 16:26 UTCEPSS rescore
  28. 2026-07-06 14:31 UTCOSV refresh
  29. 2026-07-05 02:29 UTCEPSS rescore
  30. 2026-07-04 06:29 UTCEPSS rescore
  31. 2026-07-01 15:05 UTCEPSS rescore
  32. 2026-06-30 23:21 UTCEPSS rescore
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  51. 2026-06-19 19:24 UTCEPSS rescore
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  53. 2026-06-18 17:51 UTCEPSS rescore
  54. 2026-06-18 02:44 UTCOSV refresh
  55. 2026-06-17 17:51 UTCEPSS rescore
  56. 2026-06-16 17:51 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-53213?
CVE-2023-53213 is a high vulnerability published on September 15, 2025. In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: slab-out-of-bounds read in brcmfgetassoc_ies() Fix a slab-out-of-bounds read that occurs in kmemdup() called from brcmfgetassoc_ies(). The bug could occur when associnfo->reqlen, data from a URB provided by a USB…
When was CVE-2023-53213 disclosed?
CVE-2023-53213 was first published in the National Vulnerability Database on September 15, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53213 actively exploited?
CVE-2023-53213 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.1% of all scored CVEs.
What is the CVSS score of CVE-2023-53213?
CVE-2023-53213 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2023-53213?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53213, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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