CVE-2021-33034High· 7.8▾ MidnightPoC availableIn the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.9 · likelihood 0.2 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Aug 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.8%
1 GitHub repo
0.8% → 0.8%
In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
linux_kernel < 4.4.269linux_kernel >= 4.5, < 4.9.269linux_kernel >= 4.10, < 4.14.233linux_kernel >= 4.15, < 4.19.191linux_kernel >= 4.20, < 5.4.119linux_kernel >= 5.5, < 5.10.37linux_kernel >= 5.11, < 5.11.21linux_kernel >= 5.12, < 5.12.4fedora = 34debian_linux = 9.0Upgrade past the affected range:
linux_kernel 5.12.4Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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