Sd rfkill bpf #1529
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Sd rfkill bpf #1529
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Linux Socket Filtering (LSF) is derived from the Berkeley Packet Filter
and uses the same mechanism to allow a user-space program to attach a
filter onto any socket and allow or disallow certain types of data to
come through the socket.
The systemd-rfkill service wants to listen only to related udev events,
so it needs to set a filter for which the bpf capability is required.
Addresses the following USER_AVC denial:
type=AVC msg=audit(1669160827.102:10): avc: denied { bpf } for pid=954 comm="systemd-rfkill" capability=39 scontext=system_u:system_r:systemd_rfkill_t:s0 tcontext=system_u:system_r:systemd_rfkill_t:s0 tclass=capability2 permissive=0
Resolves: rhbz#2149390
Linux Socket Filtering (LSF) is derived from the Berkeley Packet Filter
and uses the same mechanism to allow a user-space program to attach a
filter onto any socket and allow or disallow certain types of data to
come through the socket.
Both NetworkManager and wpa_supplicant, running in the same domain,
want to listen only to related network events, so they need to set
a filter for which the bpf capability is required.
Addresses the following AVC denial:
type=PROCTITLE msg=audit(10/23/2022 19:29:47.030:1673) : proctitle=/usr/sbin/wpa_supplicant -c /etc/wpa_supplicant/wpa_supplicant.conf -u -s
type=AVC msg=audit(10/23/2022 19:29:47.030:1673) : avc: denied { bpf } for pid=1637 comm=wpa_supplicant capability=bpf scontext=system_u:system_r:NetworkManager_t:s0 tcontext=system_u:system_r:NetworkManager_t:s0 tclass=capability2 permissive=0
type=SYSCALL msg=audit(10/23/2022 19:29:47.030:1673) : arch=x86_64 syscall=setsockopt success=yes exit=0 a0=0xc a1=SOL_SOCKET a2=SO_ATTACH_FILTER a3=0x55f15ed093a0 items=0 ppid=1 pid=1637 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=wpa_supplicant exe=/usr/sbin/wpa_supplicant subj=system_u:system_r:NetworkManager_t:s0 key=(null)
Resolves: rhbz#2137085
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