CVE-2023-53582
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds Fix a stack-out-of-bounds read in brcmfmac that occurs when 'buf' that is not null-terminated is passed as an argument of strreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with a CLM version string by memcpy() in brcmf_fil_iovar_data_get(). Ensure buf is null-terminated. Found by a modified version of syzkaller. [ 33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available [ 33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22 [ 33.021554][ T1896] ================================================================== [ 33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110 [ 33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896 [ 33.023852][ T1896] [ 33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G O 5.14.0+ #132 [ 33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 33.026065][ T1896] Workqueue: usb_hub_wq hub_event [ 33.026581][ T1896] Call Trace: [ 33.026896][ T1896] dump_stack_lvl+0x57/0x7d [ 33.027372][ T1896] print_address_description.constprop.0.cold+0xf/0x334 [ 33.028037][ T1896] ? strreplace+0xf2/0x110 [ 33.028403][ T1896] ? strreplace+0xf2/0x110 [ 33.028807][ T1896] kasan_report.cold+0x83/0xdf [ 33.029283][ T1896] ? strreplace+0xf2/0x110 [ 33.029666][ T1896] strreplace+0xf2/0x110 [ 33.029966][ T1896] brcmf_c_preinit_dcmds+0xab1/0xc40 [ 33.030351][ T1896] ? brcmf_c_set_joinpref_default+0x100/0x100 [ 33.030787][ T1896] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 33.031223][ T1896] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 33.031661][ T1896] ? lock_acquire+0x19d/0x4e0 [ 33.032091][ T1896] ? find_held_lock+0x2d/0x110 [ 33.032605][ T1896] ? brcmf_usb_deq+0x1a7/0x260 [ 33.033087][ T1896] ? brcmf_usb_rx_fill_all+0x5a/0xf0 [ 33.033582][ T1896] brcmf_attach+0x246/0xd40 [ 33.034022][ T1896] ? wiphy_new_nm+0x1476/0x1d50 [ 33.034383][ T1896] ? kmemdup+0x30/0x40 [ 33.034722][ T1896] brcmf_usb_probe+0x12de/0x1690 [ 33.035223][ T1896] ? brcmf_usbdev_qinit.constprop.0+0x470/0x470 [ 33.035833][ T1896] usb_probe_interface+0x25f/0x710 [ 33.036315][ T1896] really_probe+0x1be/0xa90 [ 33.036656][ T1896] __driver_probe_device+0x2ab/0x460 [ 33.037026][ T1896] ? usb_match_id.part.0+0x88/0xc0 [ 33.037383][ T1896] driver_probe_device+0x49/0x120 [ 33.037790][ T1896] __device_attach_driver+0x18a/0x250 [ 33.038300][ T1896] ? driver_allows_async_probing+0x120/0x120 [ 33.038986][ T1896] bus_for_each_drv+0x123/0x1a0 [ 33.039906][ T1896] ? bus_rescan_devices+0x20/0x20 [ 33.041412][ T1896] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 33.041861][ T1896] ? trace_hardirqs_on+0x1c/0x120 [ 33.042330][ T1896] __device_attach+0x207/0x330 [ 33.042664][ T1896] ? device_bind_driver+0xb0/0xb0 [ 33.043026][ T1896] ? kobject_uevent_env+0x230/0x12c0 [ 33.043515][ T1896] bus_probe_device+0x1a2/0x260 [ 33.043914][ T1896] device_add+0xa61/0x1ce0 [ 33.044227][ T1896] ? __mutex_unlock_slowpath+0xe7/0x660 [ 33.044891][ T1896] ? __fw_devlink_link_to_suppliers+0x550/0x550 [ 33.045531][ T1896] usb_set_configuration+0x984/0x1770 [ 33.046051][ T1896] ? kernfs_create_link+0x175/0x230 [ 33.046548][ T1896] usb_generic_driver_probe+0x69/0x90 [ 33.046931][ T1896] usb_probe_device+0x9c/0x220 [ 33.047434][ T1896] really_probe+0x1be/0xa90 [ 33.047760][ T1896] __driver_probe_device+0x2ab/0x460 [ 33.048134][ T1896] driver_probe_device+0x49/0x120 [ 33.048516][ T1896] __device_attach_driver+0x18a/0x250 [ 33.048910][ T1896] ? driver_allows_async_probing+0x120/0x120 ---truncated---
View original CVE JSON
{
"id": "CVE-2023-53582",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-10-04T16:15:53.957",
"lastModified": "2026-11-05T21:17:26.937",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds\n\nFix a stack-out-of-bounds read in brcmfmac that occurs\nwhen 'buf' that is not null-terminated is passed as an argument of\nstrreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with\na CLM version string by memcpy() in brcmf_fil_iovar_data_get().\nEnsure buf is null-terminated.\n\nFound by a modified version of syzkaller.\n\n[ 33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available\n[ 33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22\n[ 33.021554][ T1896] ==================================================================\n[ 33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110\n[ 33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896\n[ 33.023852][ T1896]\n[ 33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G O 5.14.0+ #132\n[ 33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014\n[ 33.026065][ T1896] Workqueue: usb_hub_wq hub_event\n[ 33.026581][ T1896] Call Trace:\n[ 33.026896][ T1896] dump_stack_lvl+0x57/0x7d\n[ 33.027372][ T1896] print_address_description.constprop.0.cold+0xf/0x334\n[ 33.028037][ T1896] ? strreplace+0xf2/0x110\n[ 33.028403][ T1896] ? strreplace+0xf2/0x110\n[ 33.028807][ T1896] kasan_report.cold+0x83/0xdf\n[ 33.029283][ T1896] ? strreplace+0xf2/0x110\n[ 33.029666][ T1896] strreplace+0xf2/0x110\n[ 33.029966][ T1896] brcmf_c_preinit_dcmds+0xab1/0xc40\n[ 33.030351][ T1896] ? brcmf_c_set_joinpref_default+0x100/0x100\n[ 33.030787][ T1896] ? rcu_read_lock_sched_held+0xa1/0xd0\n[ 33.031223][ T1896] ? rcu_read_lock_bh_held+0xb0/0xb0\n[ 33.031661][ T1896] ? lock_acquire+0x19d/0x4e0\n[ 33.032091][ T1896] ? find_held_lock+0x2d/0x110\n[ 33.032605][ T1896] ? brcmf_usb_deq+0x1a7/0x260\n[ 33.033087][ T1896] ? brcmf_usb_rx_fill_all+0x5a/0xf0\n[ 33.033582][ T1896] brcmf_attach+0x246/0xd40\n[ 33.034022][ T1896] ? wiphy_new_nm+0x1476/0x1d50\n[ 33.034383][ T1896] ? kmemdup+0x30/0x40\n[ 33.034722][ T1896] brcmf_usb_probe+0x12de/0x1690\n[ 33.035223][ T1896] ? brcmf_usbdev_qinit.constprop.0+0x470/0x470\n[ 33.035833][ T1896] usb_probe_interface+0x25f/0x710\n[ 33.036315][ T1896] really_probe+0x1be/0xa90\n[ 33.036656][ T1896] __driver_probe_device+0x2ab/0x460\n[ 33.037026][ T1896] ? usb_match_id.part.0+0x88/0xc0\n[ 33.037383][ T1896] driver_probe_device+0x49/0x120\n[ 33.037790][ T1896] __device_attach_driver+0x18a/0x250\n[ 33.038300][ T1896] ? driver_allows_async_probing+0x120/0x120\n[ 33.038986][ T1896] bus_for_each_drv+0x123/0x1a0\n[ 33.039906][ T1896] ? bus_rescan_devices+0x20/0x20\n[ 33.041412][ T1896] ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n[ 33.041861][ T1896] ? trace_hardirqs_on+0x1c/0x120\n[ 33.042330][ T1896] __device_attach+0x207/0x330\n[ 33.042664][ T1896] ? device_bind_driver+0xb0/0xb0\n[ 33.043026][ T1896] ? kobject_uevent_env+0x230/0x12c0\n[ 33.043515][ T1896] bus_probe_device+0x1a2/0x260\n[ 33.043914][ T1896] device_add+0xa61/0x1ce0\n[ 33.044227][ T1896] ? __mutex_unlock_slowpath+0xe7/0x660\n[ 33.044891][ T1896] ? __fw_devlink_link_to_suppliers+0x550/0x550\n[ 33.045531][ T1896] usb_set_configuration+0x984/0x1770\n[ 33.046051][ T1896] ? kernfs_create_link+0x175/0x230\n[ 33.046548][ T1896] usb_generic_driver_probe+0x69/0x90\n[ 33.046931][ T1896] usb_probe_device+0x9c/0x220\n[ 33.047434][ T1896] really_probe+0x1be/0xa90\n[ 33.047760][ T1896] __driver_probe_device+0x2ab/0x460\n[ 33.048134][ T1896] driver_probe_device+0x49/0x120\n[ 33.048516][ T1896] __device_attach_driver+0x18a/0x250\n[ 33.048910][ T1896] ? driver_allows_async_probing+0x120/0x120\n---truncated---"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
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"lessThan": "3b173b4ad9c001a555f44adc7836d6fe3afbe9ec",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "423a1297ea72bbddf64dbb0957f2879c0f2aa5d0",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "0ca2efea4f11c6255061e852ac188264c469c197",
"versionType": "git",
"status": "affected"
},
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"lessThan": "a0f0ce1c8ab9fe90618dc394e3d1568b5a9ac154",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "ecb980dc79709c02f579a9c03cb92ccec189ab38",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "c02f733024d70105f22de8dd0a1252a0350cd516",
"versionType": "git",
"status": "affected"
},
{
"version": "fdd0bd88ceaecf729db103ac8836af5805dd2dc1",
"lessThan": "660145d708be52f946a82e5b633c020f58f996de",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.15",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.15",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "4.19.276",
"lessThanOrEqual": "4.19.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.4.235",
"lessThanOrEqual": "5.4.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.173",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.99",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.16",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.2.3",
"lessThanOrEqual": "6.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T20:24:26.231413Z",
"id": "CVE-2023-53582",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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