{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54077", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T12:21:05.094Z", "datePublished": "2025-12-24T13:03:25.790Z", "dateUpdated": "2026-08-05T09:17:01.351Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:17:01.351Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix memory leak if ntfs_read_mft failed\n\nLabel ATTR_ROOT in ntfs_read_mft() sets is_root = true and\nni->ni_flags |= NI_FLAG_DIR, then next attr will goto label ATTR_ALLOC\nand alloc ni->dir.alloc_run. However two states are not always\nconsistent and can make memory leak.\n\n 1) attr_name in ATTR_ROOT does not fit the condition it will set\n is_root = true but NI_FLAG_DIR is not set.\n 2) next attr_name in ATTR_ALLOC fits the condition and alloc\n ni->dir.alloc_run\n 3) in cleanup function ni_clear(), when NI_FLAG_DIR is set, it frees\n ni->dir.alloc_run, otherwise it frees ni->file.run\n 4) because NI_FLAG_DIR is not set in this case, ni->dir.alloc_run is\n leaked as kmemleak reported:\n\nunreferenced object 0xffff888003bc5480 (size 64):\n backtrace:\n [<000000003d42e6b0>] __kmalloc_node+0x4e/0x1c0\n [<00000000d8e19b8a>] kvmalloc_node+0x39/0x1f0\n [<00000000fc3eb5b8>] run_add_entry+0x18a/0xa40 [ntfs3]\n [<0000000011c9f978>] run_unpack+0x75d/0x8e0 [ntfs3]\n [<00000000e7cf1819>] run_unpack_ex+0xbc/0x500 [ntfs3]\n [<00000000bbf0a43d>] ntfs_iget5+0xb25/0x2dd0 [ntfs3]\n [<00000000a6e50693>] ntfs_fill_super+0x218d/0x3580 [ntfs3]\n [<00000000b9170608>] get_tree_bdev+0x3fb/0x710\n [<000000004833798a>] vfs_get_tree+0x8e/0x280\n [<000000006e20b8e6>] path_mount+0xf3c/0x1930\n [<000000007bf15a5f>] do_mount+0xf3/0x110\n ...\n\nFix this by always setting is_root and NI_FLAG_DIR together." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is the on-disk MFT record parser, reached via ntfs_fill_super()/ntfs_iget5() when an attacker-supplied NTFS volume is mounted, requiring local presentation of the image (USB stick, loop device, disk image) rather than network access.\nAC:L - The inconsistent is_root/NI_FLAG_DIR state is produced deterministically by attacker-controlled on-disk structures — an $INDEX_ROOT attribute named other than $I30 (or in a record without RECORD_FLAG_DIR) followed by an $INDEX_ALLOCATION attribute — with no race and no reliance on memory layout the attacker cannot influence.\nPR:N - The attacker only has to supply the malicious filesystem image and needs no account or privileges on the target system; the mount is performed by the victim or by an automounter such as udisks2.\nUI:R - Exploitation requires someone on the target to mount the crafted NTFS volume, e.g. inserting the attacker's USB device or opening the supplied image.\nS:U - The corruption and leak are confined to kernel memory managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Because ni->dir and ni->file share a union, dir.alloc_run.allocated aliases file.run.runs, leaving the file's runs_tree with a bogus base pointer and (for the $MFT case) an enormous count, so run_lookup()/run_lookup_entry() perform out-of-bounds reads of kernel memory that influence returned file data.\nI:H - The same union aliasing lets run_add_entry() store r->vcn/lcn/len through the corrupted runs_tree base, and run_close() in ni_clear() calls kvfree() on a non-pointer value, corrupting slab/page-allocator state — memory corruption leverageable for control-flow hijacking.\nA:H - Every affected inode leaks its kvmalloc'ed run array unboundedly (kmemleak-confirmed), and on default configs the aliased ni->file.run.runs causes an invalid kvfree()/wild-pointer dereference at inode eviction or unmount, producing a kernel oops." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ntfs3/inode.c" ], "versions": [ { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "3030f2b9b3329db3948c1a145a5493ca6f617d50", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "93bf79f989688852deade1550fb478b0a4d8daa8", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "3bb0d3eb475f01744ce6d6e998dfbd80220852a1", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "bfa434c60157c9793e9b12c9b68ade02aff9f803", "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/ntfs3/inode.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.111", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.28", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.15", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.2", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4", "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": "5.15.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.28" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.2.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.3.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3030f2b9b3329db3948c1a145a5493ca6f617d50" }, { "url": "https://git.kernel.org/stable/c/1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06" }, { "url": "https://git.kernel.org/stable/c/93bf79f989688852deade1550fb478b0a4d8daa8" }, { "url": "https://git.kernel.org/stable/c/3bb0d3eb475f01744ce6d6e998dfbd80220852a1" }, { "url": "https://git.kernel.org/stable/c/bfa434c60157c9793e9b12c9b68ade02aff9f803" } ], "title": "fs/ntfs3: Fix memory leak if ntfs_read_mft failed", "x_generator": { "engine": "bippy-1.2.0" } } } }