{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54313", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.531Z", "datePublished": "2025-12-30T12:23:44.484Z", "dateUpdated": "2026-05-11T19:59:33.173Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:59:33.173Z"}, "descriptions": [{"lang": "en", "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/overlayfs/inode.c"], "versions": [{"version": "332f606b32b6291a944c8cf23b91f53a6e676525", "lessThan": "d97481c7b2739a704848bb3c01f224dc71bdf78e", "status": "affected", "versionType": "git"}, {"version": "332f606b32b6291a944c8cf23b91f53a6e676525", "lessThan": "c4a5fb1ae5d3f02d3227afde2b9339994389463d", "status": "affected", "versionType": "git"}, {"version": "332f606b32b6291a944c8cf23b91f53a6e676525", "lessThan": "d536af163c53ce9f9bcfe87d2e9946f06f1a7ea4", "status": "affected", "versionType": "git"}, {"version": "332f606b32b6291a944c8cf23b91f53a6e676525", "lessThan": "f4e19e595cc2e76a8a58413eb19d3d9c51328b53", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/overlayfs/inode.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.40", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4.4", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5", "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": "5.15", "versionEndExcluding": "5.15.121"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.4.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d97481c7b2739a704848bb3c01f224dc71bdf78e"}, {"url": "https://git.kernel.org/stable/c/c4a5fb1ae5d3f02d3227afde2b9339994389463d"}, {"url": "https://git.kernel.org/stable/c/d536af163c53ce9f9bcfe87d2e9946f06f1a7ea4"}, {"url": "https://git.kernel.org/stable/c/f4e19e595cc2e76a8a58413eb19d3d9c51328b53"}], "title": "ovl: fix null pointer dereference in ovl_get_acl_rcu()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\novl: corrige la desreferencia de puntero nulo en ovl_get_acl_rcu()\n\nEl siguiente proceso:\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-&gt;__upperdentry)\n\t\t dentry_kill(upperdentry)\n\t\t dentry_unlink_inode\n\t\t\t\t upperdentry-&gt;d_inode = NULL\n\t ovl_inode_upper\n\t upperdentry = ovl_i_dentry_upper(ovl_inode)\n\t d_inode(upperdentry) // devuelve NULL\n\t IS_POSIXACL(realinode) // desreferencia de puntero nulo\n, activar\u00e1 una desreferencia de puntero nulo en realinode:\n [ 205.472797] BUG: desreferencia de puntero nulo del kernel, direcci\u00f3n:\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] Traza de llamada:\n [ 205.489812] \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\nObtenga un reproductor en [Link].\n\nUse la funci\u00f3n auxiliar ovl_i_path_realinode() para obtener realinode y luego realice una comprobaci\u00f3n de puntero no nulo."}], "id": "CVE-2023-54313", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-30T13:16:20.540", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c4a5fb1ae5d3f02d3227afde2b9339994389463d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d536af163c53ce9f9bcfe87d2e9946f06f1a7ea4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d97481c7b2739a704848bb3c01f224dc71bdf78e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f4e19e595cc2e76a8a58413eb19d3d9c51328b53"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: ovl: fix null pointer dereference in ovl_get_acl_rcu()", "id": "2426085", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426085"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-54313", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54313\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54313\nhttps://lore.kernel.org/linux-cve-announce/2025123036-CVE-2023-54313-f889@gregkh/T"], "threat_severity": "Low"}

{}