164 lines
8.6 KiB
JSON
164 lines
8.6 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-2023-54313",
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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": "2025-12-30T12:06:44.531Z",
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"datePublished": "2025-12-30T12:23:44.484Z",
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"dateUpdated": "2026-05-11T19:59:33.173Z"
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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": "2026-05-11T19:59:33.173Z"
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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\novl: fix null pointer dereference in ovl_get_acl_rcu()\n\nFollowing process:\n P1 P2\n path_openat\n link_path_walk\n may_lookup\n inode_permission(rcu)\n ovl_permission\n acl_permission_check\n check_acl\n get_cached_acl_rcu\n\t ovl_get_inode_acl\n\t realinode = ovl_inode_real(ovl_inode)\n\t drop_cache\n\t\t __dentry_kill(ovl_dentry)\n\t\t\t\tiput(ovl_inode)\n\t\t ovl_destroy_inode(ovl_inode)\n\t\t dput(oi->__upperdentry)\n\t\t dentry_kill(upperdentry)\n\t\t dentry_unlink_inode\n\t\t\t\t upperdentry->d_inode = NULL\n\t ovl_inode_upper\n\t upperdentry = ovl_i_dentry_upper(ovl_inode)\n\t d_inode(upperdentry) // returns NULL\n\t IS_POSIXACL(realinode) // NULL pointer dereference\n, will trigger an null pointer dereference at realinode:\n [ 205.472797] BUG: kernel NULL pointer dereference, address:\n 0000000000000028\n [ 205.476701] CPU: 2 PID: 2713 Comm: ls Not tainted\n 6.3.0-12064-g2edfa098e750-dirty #1216\n [ 205.478754] RIP: 0010:do_ovl_get_acl+0x5d/0x300\n [ 205.489584] Call Trace:\n [ 205.489812] <TASK>\n [ 205.490014] ovl_get_inode_acl+0x26/0x30\n [ 205.490466] get_cached_acl_rcu+0x61/0xa0\n [ 205.490908] generic_permission+0x1bf/0x4e0\n [ 205.491447] ovl_permission+0x79/0x1b0\n [ 205.491917] inode_permission+0x15e/0x2c0\n [ 205.492425] link_path_walk+0x115/0x550\n [ 205.493311] path_lookupat.isra.0+0xb2/0x200\n [ 205.493803] filename_lookup+0xda/0x240\n [ 205.495747] vfs_fstatat+0x7b/0xb0\n\nFetch a reproducer in [Link].\n\nUse the helper ovl_i_path_realinode() to get realinode and then do\nnon-nullptr checking."
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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/overlayfs/inode.c"
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],
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"versions": [
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{
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"version": "332f606b32b6291a944c8cf23b91f53a6e676525",
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"lessThan": "d97481c7b2739a704848bb3c01f224dc71bdf78e",
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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": "332f606b32b6291a944c8cf23b91f53a6e676525",
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"lessThan": "c4a5fb1ae5d3f02d3227afde2b9339994389463d",
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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": "332f606b32b6291a944c8cf23b91f53a6e676525",
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"lessThan": "d536af163c53ce9f9bcfe87d2e9946f06f1a7ea4",
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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": "332f606b32b6291a944c8cf23b91f53a6e676525",
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"lessThan": "f4e19e595cc2e76a8a58413eb19d3d9c51328b53",
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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/overlayfs/inode.c"
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],
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"versions": [
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{
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"version": "5.15",
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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": "5.15",
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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": "5.15.121",
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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": "6.1.40",
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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": "6.4.4",
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"lessThanOrEqual": "6.4.*",
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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": "6.5",
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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": "5.15",
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"versionEndExcluding": "5.15.121"
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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": "5.15",
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"versionEndExcluding": "6.1.40"
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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": "5.15",
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"versionEndExcluding": "6.4.4"
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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": "5.15",
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"versionEndExcluding": "6.5"
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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/d97481c7b2739a704848bb3c01f224dc71bdf78e"
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},
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{
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"url": "https://git.kernel.org/stable/c/c4a5fb1ae5d3f02d3227afde2b9339994389463d"
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},
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{
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"url": "https://git.kernel.org/stable/c/d536af163c53ce9f9bcfe87d2e9946f06f1a7ea4"
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},
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{
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"url": "https://git.kernel.org/stable/c/f4e19e595cc2e76a8a58413eb19d3d9c51328b53"
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}
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],
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"title": "ovl: fix null pointer dereference in ovl_get_acl_rcu()",
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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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} |