CVE-2024-35811— wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach
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I. Basic Information for CVE-2024-35811
Vulnerability Information
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Vulnerability Title
wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach This is the candidate patch of CVE-2023-47233 : https://nvd.nist.gov/vuln/detail/CVE-2023-47233 In brcm80211 driver,it starts with the following invoking chain to start init a timeout worker: ->brcmf_usb_probe ->brcmf_usb_probe_cb ->brcmf_attach ->brcmf_bus_started ->brcmf_cfg80211_attach ->wl_init_priv ->brcmf_init_escan ->INIT_WORK(&cfg->escan_timeout_work, brcmf_cfg80211_escan_timeout_worker); If we disconnect the USB by hotplug, it will call brcmf_usb_disconnect to make cleanup. The invoking chain is : brcmf_usb_disconnect ->brcmf_usb_disconnect_cb ->brcmf_detach ->brcmf_cfg80211_detach ->kfree(cfg); While the timeout woker may still be running. This will cause a use-after-free bug on cfg in brcmf_cfg80211_escan_timeout_worker. Fix it by deleting the timer and canceling the worker in brcmf_cfg80211_detach. [arend.vanspriel@broadcom.com: keep timer delete as is and cancel work just before free]
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 wifi/brcmfmac 存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-35811
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Same Patch Batch · Linux · 2024-05-17 · 135 CVEs total
| CVE-2024-35834 | xsk: recycle buffer in case Rx queue was full | |
| CVE-2023-52686 | powerpc/powernv: Add a null pointer check in opal_event_init() | |
| CVE-2023-52684 | firmware: qcom: qseecom: fix memory leaks in error paths | |
| CVE-2023-52683 | ACPI: LPIT: Avoid u32 multiplication overflow | |
| CVE-2023-52682 | f2fs: fix to wait on block writeback for post_read case | |
| CVE-2023-52681 | efivarfs: Free s_fs_info on unmount | |
| CVE-2023-52680 | ALSA: scarlett2: Add missing error checks to *_ctl_get() | |
| CVE-2023-52679 | of: Fix double free in of_parse_phandle_with_args_map | |
| CVE-2023-52678 | drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c | |
| CVE-2023-52677 | riscv: Check if the code to patch lies in the exit section | |
| CVE-2023-52676 | bpf: Guard stack limits against 32bit overflow | |
| CVE-2023-52675 | powerpc/imc-pmu: Add a null pointer check in update_events_in_group() | |
| CVE-2023-52674 | ALSA: scarlett2: Add clamp() in scarlett2_mixer_ctl_put() | |
| CVE-2024-35838 | wifi: mac80211: fix potential sta-link leak | |
| CVE-2024-35837 | net: mvpp2: clear BM pool before initialization | |
| CVE-2024-35836 | dpll: fix pin dump crash for rebound module | |
| CVE-2024-35835 | net/mlx5e: fix a double-free in arfs_create_groups | |
| CVE-2023-52664 | net: atlantic: eliminate double free in error handling logic | |
| CVE-2024-35830 | media: tc358743: register v4l2 async device only after successful setup | |
| CVE-2024-35831 | io_uring: Fix release of pinned pages when __io_uaddr_map fails |
Showing top 20 of 135 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
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scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-35811
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