[PATCH I/U] UBUNTU: [Config] mark CONFIG_BPF_UNPRIV_DEFAULT_OFF enforced
Thadeu Lima de Souza Cascardo
cascardo at canonical.com
Wed Sep 1 17:44:35 UTC 2021
Setting unprivileged_bpf_disabled to 2 by default will prevent attacks
using BPF by unprivileged users by default. If necessary, the sysadmin will
be able to turn this on again by setting unprivileged_bpf_disabled to 0. On
the other hand, the sysadmin can disable unprivileged BPF without allowing
it to be reenabled by setting unprivileged_bpf_disabled to 1.
Additionaly, there is a CAP_BPF that allows processes to use BPF without
having the complete capability set or CAP_SYS_ADMIN.
Mark the option as enforced so derivative kernels will pick it up.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo at canonical.com>
---
debian.master/config/annotations | 1 +
1 file changed, 1 insertion(+)
diff --git a/debian.master/config/annotations b/debian.master/config/annotations
index f1435df44bdd..f3450201abc2 100644
--- a/debian.master/config/annotations
+++ b/debian.master/config/annotations
@@ -11044,6 +11044,7 @@ CONFIG_BPF_UNPRIV_DEFAULT_OFF policy<{'amd64': 'y', 'arm64': '
CONFIG_BPF_JIT policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el': 'y', 's390x': 'y'}>
#
CONFIG_BPF_JIT_ALWAYS_ON flag<REVIEW>
+CONFIG_BPF_UNPRIV_DEFAULT_OFF mark<ENFORCED> note<security reason>
# Menu: General setup >> BPF subsystem >> Preload BPF file system with kernel specific program and map iterators
CONFIG_BPF_PRELOAD policy<{'amd64': 'n', 'arm64': 'n', 'armhf': 'n', 'ppc64el': 'n', 's390x': 'n'}>
--
2.30.2
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