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. [[email protected]: keep timer delete as is and cancel work just before free]
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 6.8.0-35.35 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 6.8.0-1009.9 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1062.68~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1125.135~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-fips | — | 5.15.0-1062.68+fips1 |
| linux-aws-hwe | — | 4.15.0-1168.181~16.04.1 |
| linux-azure | — | 6.8.0-1008.8 |
| linux-azure-4.15 | — | 4.15.0-1177.192 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1064.73~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1130.137~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 5.15.0-1064.73.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fips | — | 5.15.0-1064.73+fips1 |
| linux-bluefield | — | — |
| linux-fips | — | 5.15.0-107.117+fips1 |
| linux-gcp | — | 6.8.0-1008.9 |
| linux-gcp-4.15 | — | 4.15.0-1162.179 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1060.68~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1129.138~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-fips | — | 5.15.0-1060.68+fips1 |
| linux-gke | — | 6.8.0-1004.7 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1045.52 |
| linux-gkeop-5.15 | — | 5.15.0-1045.52~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-107.117~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | 5.4.0-182.202~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 6.8.0-1006.6 |
| linux-ibm-5.15 | — | 5.15.0-1055.58~20.04.1 |
| linux-ibm-5.4 | — | 5.4.0-1072.77~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1055.57 |
| linux-intel-iotg | — | 5.15.0-1057.63 |
| linux-intel-iotg-5.15 | — | 5.15.0-1058.64~20.04.1 |
| linux-iot | — | 5.4.0-1037.38 |
| linux-kvm | — | 5.15.0-1059.64 |
| linux-lowlatency | — | 6.8.0-35.35.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-107.117~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lts-xenial | — | 4.4.0-254.288~14.04.1 |
| linux-nvidia | — | 5.15.0-1055.56 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | 6.5.0-1019.19 |
| linux-nvidia-tegra | — | 5.15.0-1026.26 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1027.27~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1015.15 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | 6.8.0-1006.6 |
| linux-oracle | — | 6.8.0-1006.6 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1061.67~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1124.133~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-raspi | — | 6.8.0-1005.5 |
| linux-raspi-5.4 | — | 5.4.0-1109.121~18.04.1 |
| linux-raspi-realtime | — | 6.8.0-2004.4 |
| linux-raspi2 | — | — |
| linux-realtime | — | 6.8.1-1002.2 |
| linux-riscv | — | 6.8.0-35.35.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1058.62~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | — |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx-zynqmp | — | 5.15.0-1030.34 |
References
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