CVE-2023-53987
ping: Fix potentail NULL deref for /proc/net/icmp.
Summary
ping: Fix potentail NULL deref for /proc/net/icmp.
Original description
The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
ping: Fix potentail NULL deref for /proc/net/icmp.
After commit dbca1596bbb0 ("ping: convert to RCU lookups, get rid
of rwlock"), we use RCU for ping sockets, but we should use spinlock
for /proc/net/icmp to avoid a potential NULL deref mentioned in
the previous patch.
Let's go back to using spinlock there.
Note we can convert ping sockets to use hlist instead of hlist_nulls
because we do not use SLAB_TYPESAFE_BY_RCU for ping sockets.
Affected packages
Linux
Kernel
[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.24"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.11"}]}]
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2023-53987 linux Fixed in: 6.1.25-1
References
- advisory github.com
- advisory nvd.nist.gov
- package git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org