Answer in brief
CVE-2024-35811 records a Unknown severity vulnerability in wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2024-35811 records a Unknown severity vulnerability in wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <202c503935042272e2f9e1bb549d5f69a8681169 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <bacb8c3ab86dcd760c15903fcee58169bc3026aa || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <8c36205123dc57349b59b4f1a2301eb278cbc731 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <0b812f706fd7090be74812101114a0e165b36744 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <190794848e2b9d15de92d502b6ac652806904f5a || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <6678a1e7d896c00030b31491690e8ddc9a90767a || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <0a7591e14a8da794d0b93b5d1c6254ccb23adacb || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <0f7352557a35ab7888bc7831411ec8a3cbe20d78 | 202c503935042272e2f9e1bb549d5f69a8681169, 8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1, bacb8c3ab86dcd760c15903fcee58169bc3026aa, 8c36205123dc57349b59b4f1a2301eb278cbc731, 0b812f706fd7090be74812101114a0e165b36744, 190794848e2b9d15de92d502b6ac652806904f5a, 6678a1e7d896c00030b31491690e8ddc9a90767a, 0a7591e14a8da794d0b93b5d1c6254ccb23adacb, 0f7352557a35ab7888bc7831411ec8a3cbe20d78 |
| Linux/Linuxgeneric | 3.7 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
May 17, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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. [[email protected]: keep timer delete as is and cancel work just before free]
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <202c503935042272e2f9e1bb549d5f69a8681169 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <bacb8c3ab86dcd760c15903fcee58169bc3026aa || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <8c36205123dc57349b59b4f1a2301eb278cbc731 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <0b812f706fd7090be74812101114a0e165b36744 || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <190794848e2b9d15de92d502b6ac652806904f5a || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <6678a1e7d896c00030b31491690e8ddc9a90767a || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <0a7591e14a8da794d0b93b5d1c6254ccb23adacb || >=e756af5b30b008f6ffcfebf8ad0b477f6f225b62 <0f7352557a35ab7888bc7831411ec8a3cbe20d78 | 202c503935042272e2f9e1bb549d5f69a8681169, 8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1, bacb8c3ab86dcd760c15903fcee58169bc3026aa, 8c36205123dc57349b59b4f1a2301eb278cbc731, 0b812f706fd7090be74812101114a0e165b36744, 190794848e2b9d15de92d502b6ac652806904f5a, 6678a1e7d896c00030b31491690e8ddc9a90767a, 0a7591e14a8da794d0b93b5d1c6254ccb23adacb, 0f7352557a35ab7888bc7831411ec8a3cbe20d78 |
| Linux/Linuxgeneric | 3.7 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
May 17, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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. [[email protected]: keep timer delete as is and cancel work just before free]
Quoted source text, attributed separately from HOL analysis.