CVE-2023-54077
fs/ntfs3: Fix memory leak if ntfs_read_mft failed
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix memory leak if ntfs_read_mft failed Label ATTR_ROOT in ntfs_read_mft() sets is_root = true and ni->ni_flags |= NI_FLAG_DIR, then next attr will goto label ATTR_ALLOC and alloc ni->dir.alloc_run. However two states are not always consistent and can make memory leak. 1) attr_name in ATTR_ROOT does not fit the condition it will set is_root = true but NI_FLAG_DIR is not set. 2) next attr_name in ATTR_ALLOC fits the condition and alloc ni->dir.alloc_run 3) in cleanup function ni_clear(), when NI_FLAG_DIR is set, it frees ni->dir.alloc_run, otherwise it frees ni->file.run 4) because NI_FLAG_DIR is not set in this case, ni->dir.alloc_run is leaked as kmemleak reported: unreferenced object 0xffff888003bc5480 (size 64): backtrace: [<000000003d42e6b0>] __kmalloc_node+0x4e/0x1c0 [<00000000d8e19b8a>] kvmalloc_node+0x39/0x1f0 [<00000000fc3eb5b8>] run_add_entry+0x18a/0xa40 [ntfs3] [<0000000011c9f978>] run_unpack+0x75d/0x8e0 [ntfs3] [<00000000e7cf1819>] run_unpack_ex+0xbc/0x500 [ntfs3] [<00000000bbf0a43d>] ntfs_iget5+0xb25/0x2dd0 [ntfs3] [<00000000a6e50693>] ntfs_fill_super+0x218d/0x3580 [ntfs3] [<00000000b9170608>] get_tree_bdev+0x3fb/0x710 [<000000004833798a>] vfs_get_tree+0x8e/0x280 [<000000006e20b8e6>] path_mount+0xf3c/0x1930 [<000000007bf15a5f>] do_mount+0xf3/0x110 ... Fix this by always setting is_root and NI_FLAG_DIR together.
Timeline
ID reserved
By Linux
Published
- 7 months later
· 7 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < 3030f2b9b3329db3948c1a145a5493ca6f617d50
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < 1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < 93bf79f989688852deade1550fb478b0a4d8daa8
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < 3bb0d3eb475f01744ce6d6e998dfbd80220852a1
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < bfa434c60157c9793e9b12c9b68ade02aff9f803
- affected 5.15
- unaffected < 5.15
- unaffected 5.15.111 – ≤ 5.15.*
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (5)
- https://git.kernel.org/stable/c/3030f2b9b3329db3948c1a145a5493ca6f617d50 (opens in a new tab)
- https://git.kernel.org/stable/c/1bc6bb657dfb0ab3b94ef6d477ca241bf7b6ec06 (opens in a new tab)
- https://git.kernel.org/stable/c/93bf79f989688852deade1550fb478b0a4d8daa8 (opens in a new tab)
- https://git.kernel.org/stable/c/3bb0d3eb475f01744ce6d6e998dfbd80220852a1 (opens in a new tab)
- https://git.kernel.org/stable/c/bfa434c60157c9793e9b12c9b68ade02aff9f803 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-54077)Record last updated .