122 lines
6.1 KiB
JSON
122 lines
6.1 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-52938",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-06-09T07:44:35.370Z",
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"datePublished": "2026-06-24T07:14:27.952Z",
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"dateUpdated": "2026-06-27T10:25:25.035Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-06-27T10:25:25.035Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths\n\nbpf_selem_unlink_nofail() sets SDATA(selem)->smap to NULL before\nremoving the selem from the storage hlist. A concurrent RCU reader in\nbpf_sk_storage_clone() can observe the selem still on the list with\nsmap already NULL, causing a NULL pointer dereference.\n\n general protection fault, probably for non-canonical address 0xdffffc000000000a:\n KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]\n RIP: 0010:bpf_sk_storage_clone+0x1cd/0xaa0 net/core/bpf_sk_storage.c:174\n Call Trace:\n <IRQ>\n sk_clone+0xfed/0x1980 net/core/sock.c:2591\n inet_csk_clone_lock+0x30/0x760 net/ipv4/inet_connection_sock.c:1222\n tcp_create_openreq_child+0x35/0x2680 net/ipv4/tcp_minisocks.c:571\n tcp_v4_syn_recv_sock+0x123/0xf90 net/ipv4/tcp_ipv4.c:1729\n tcp_check_req+0x8e1/0x2580 include/net/tcp.h:855\n tcp_v4_rcv+0x1845/0x3b80 net/ipv4/tcp_ipv4.c:2347\n\nAdd a NULL check for smap in bpf_sk_storage_clone().\n\nbpf_sk_storage_diag_put_all() has the same issue. Add a NULL check\nand pass the validated smap directly to diag_get(), which is refactored\nto take smap as a parameter instead of reading it internally.\n\nbpf_sk_storage_diag_put() uses diag->maps[i] which is always valid\nunder its refcount, so diag->maps[i] is passed directly to diag_get()."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/core/bpf_sk_storage.c"
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],
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"versions": [
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{
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"version": "5d800f87d0a5ea1b156c47a4b9fd128479335153",
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"lessThan": "16af24fea29c209dea53595c99f6da9398548e1b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5d800f87d0a5ea1b156c47a4b9fd128479335153",
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"lessThan": "375e4e33c18dfa05c5dfd5f3dfffeb29343dd4c7",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/core/bpf_sk_storage.c"
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],
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"versions": [
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{
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"version": "7.0",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "7.0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0.14",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.0",
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"versionEndExcluding": "7.0.14"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.0",
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"versionEndExcluding": "7.1"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/16af24fea29c209dea53595c99f6da9398548e1b"
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},
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{
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"url": "https://git.kernel.org/stable/c/375e4e33c18dfa05c5dfd5f3dfffeb29343dd4c7"
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}
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],
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"title": "bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |