Description (CNA)
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]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 202c503935042272e2f9e1bb549d5f69a8681169; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before bacb8c3ab86dcd760c15903fcee58169bc3026aa; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 8c36205123dc57349b59b4f1a2301eb278cbc731; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 0b812f706fd7090be74812101114a0e165b36744; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 190794848e2b9d15de92d502b6ac652806904f5a; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 6678a1e7d896c00030b31491690e8ddc9a90767a; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 0a7591e14a8da794d0b93b5d1c6254ccb23adacb; affected e756af5b30b008f6ffcfebf8ad0b477f6f225b62 before 0f7352557a35ab7888bc7831411ec8a3cbe20d78 |
| Linux / Linux | affected 3.7; unaffected 0 before 3.7; unaffected 4.19.312 through 4.19.*; unaffected 5.4.274 through 5.4.*; unaffected 5.10.215 through 5.10.*; unaffected 5.15.154 through 5.15.*; unaffected 6.1.84 through 6.1.*; unaffected 6.6.24 through 6.6.*; unaffected 6.7.12 through 6.7.*; unaffected 6.8.3 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169
- https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1
- https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aa
- https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731
- https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744
- https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5a
- https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767a
- https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacb
- https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169
- https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1
- https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aa
- https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731
- https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744
- https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5a
- https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767a
- https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacb
- https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
No English description supplied.
No references supplied.
No English description supplied.