{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53987","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-24T10:53:46.175Z","datePublished":"2025-12-24T10:55:27.032Z","dateUpdated":"2026-05-11T19:53:06.189Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:53:06.189Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nping: Fix potentail NULL deref for /proc/net/icmp.\n\nAfter commit dbca1596bbb0 (\"ping: convert to RCU lookups, get rid\nof rwlock\"), we use RCU for ping sockets, but we should use spinlock\nfor /proc/net/icmp to avoid a potential NULL deref mentioned in\nthe previous patch.\n\nLet's go back to using spinlock there.\n\nNote we can convert ping sockets to use hlist instead of hlist_nulls\nbecause we do not use SLAB_TYPESAFE_BY_RCU for ping sockets."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/ping.c"],"versions":[{"version":"dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65","lessThan":"5a08a32e624908890aa0a2eb442bb6a7669891a8","status":"affected","versionType":"git"},{"version":"dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65","lessThan":"176cbb6da28f36506cc60a4bec4ab8df0c16713a","status":"affected","versionType":"git"},{"version":"dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65","lessThan":"ab5fb73ffa01072b4d8031cc05801fa1cb653bee","status":"affected","versionType":"git"},{"version":"de3d723a3985f282a8c9e468d1e198616eb291c8","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/ping.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.1.24","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.11","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/5a08a32e624908890aa0a2eb442bb6a7669891a8"},{"url":"https://git.kernel.org/stable/c/176cbb6da28f36506cc60a4bec4ab8df0c16713a"},{"url":"https://git.kernel.org/stable/c/ab5fb73ffa01072b4d8031cc05801fa1cb653bee"}],"title":"ping: Fix potentail NULL deref for /proc/net/icmp.","x_generator":{"engine":"bippy-1.2.0"}}}}