linux: In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp
CVE-2023-53987 is fixed in 20 products on 1 platform, first by ALAS2023-2023-169, released April 27, 2023. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| bpftool-debuginfo · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-debuginfo · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-debuginfo-common-aarch64 · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-debuginfo-common-x86_64 · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-devel · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-headers · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-libbpf · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-libbpf-devel · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-libbpf-static · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-livepatch-6.1.25-37.47 · amzn 2023 | 1.0-0.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-tools · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-tools-debuginfo · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| kernel-tools-devel · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| linux · Debian 12.15 (bookworm) | 6.1.25-1 | DEBIAN-CVE-2023-53987 | Dec 24, 2025 |
| linux · Debian 13.5 (trixie) | 6.1.25-1 | DEBIAN-CVE-2023-53987 | Dec 24, 2025 |
| linux · Debian 14 | 6.1.25-1 | DEBIAN-CVE-2023-53987 | Dec 24, 2025 |
| perf · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| perf-debuginfo · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| python3-perf · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
| python3-perf-debuginfo · amzn 2023 | 6.1.25-37.47.amzn2023 | ALAS2023-2023-169 | Apr 27, 2023 |
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