185 lines
9.2 KiB
JSON
185 lines
9.2 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-2023-53246",
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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": "2025-09-15T14:19:21.848Z",
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"datePublished": "2025-09-15T14:46:15.977Z",
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"dateUpdated": "2026-05-11T19:41:04.299Z"
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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": "2026-05-11T19:41:04.299Z"
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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\ncifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL\n\nWhen compiled with CONFIG_CIFS_DFS_UPCALL disabled, cifs_dfs_d_automount\nis NULL. cifs.ko logic for mapping CIFS_FATTR_DFS_REFERRAL attributes to\nS_AUTOMOUNT and corresponding dentry flags is retained regardless of\nCONFIG_CIFS_DFS_UPCALL, leading to a NULL pointer dereference in\nVFS follow_automount() when traversing a DFS referral link:\n BUG: kernel NULL pointer dereference, address: 0000000000000000\n ...\n Call Trace:\n <TASK>\n __traverse_mounts+0xb5/0x220\n ? cifs_revalidate_mapping+0x65/0xc0 [cifs]\n step_into+0x195/0x610\n ? lookup_fast+0xe2/0xf0\n path_lookupat+0x64/0x140\n filename_lookup+0xc2/0x140\n ? __create_object+0x299/0x380\n ? kmem_cache_alloc+0x119/0x220\n ? user_path_at_empty+0x31/0x50\n user_path_at_empty+0x31/0x50\n __x64_sys_chdir+0x2a/0xd0\n ? exit_to_user_mode_prepare+0xca/0x100\n do_syscall_64+0x42/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nThis fix adds an inline cifs_dfs_d_automount() {return -EREMOTE} handler\nwhen CONFIG_CIFS_DFS_UPCALL is disabled. An alternative would be to\navoid flagging S_AUTOMOUNT, etc. without CONFIG_CIFS_DFS_UPCALL. This\napproach was chosen as it provides more control over the error path."
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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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"fs/cifs/cifsfs.h"
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],
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"versions": [
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{
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"version": "25e195aa1e607f129ab912d29fcfc79239703307",
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"lessThan": "26a32a212bc540f4773cd6af8cf73e967d72569c",
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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": "25e195aa1e607f129ab912d29fcfc79239703307",
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"lessThan": "b64305185b76f1d5145ce594ff48f3f0e70695bd",
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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": "25e195aa1e607f129ab912d29fcfc79239703307",
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"lessThan": "b7d854c33ab48e55fc233699bbefe39ec9bb5c05",
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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": "25e195aa1e607f129ab912d29fcfc79239703307",
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"lessThan": "1e144b68208e98fd4602c842a7149ba5f41d87fb",
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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": "25e195aa1e607f129ab912d29fcfc79239703307",
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"lessThan": "179a88a8558bbf42991d361595281f3e45d7edfc",
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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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"fs/cifs/cifsfs.h"
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],
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"versions": [
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{
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"version": "5.7",
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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": "5.7",
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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": "5.10.177",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.106",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.23",
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"lessThanOrEqual": "6.1.*",
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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": "6.2.10",
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"lessThanOrEqual": "6.2.*",
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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": "6.3",
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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": "5.7",
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"versionEndExcluding": "5.10.177"
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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": "5.7",
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"versionEndExcluding": "5.15.106"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.1.23"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.2.10"
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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": "5.7",
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"versionEndExcluding": "6.3"
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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/26a32a212bc540f4773cd6af8cf73e967d72569c"
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},
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{
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"url": "https://git.kernel.org/stable/c/b64305185b76f1d5145ce594ff48f3f0e70695bd"
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},
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{
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"url": "https://git.kernel.org/stable/c/b7d854c33ab48e55fc233699bbefe39ec9bb5c05"
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},
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{
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"url": "https://git.kernel.org/stable/c/1e144b68208e98fd4602c842a7149ba5f41d87fb"
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},
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{
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"url": "https://git.kernel.org/stable/c/179a88a8558bbf42991d361595281f3e45d7edfc"
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}
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],
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"title": "cifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL",
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"x_generator": {
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}
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} |