CVE-2026-43127
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ntfs3: fix circular locking dependency in run_unpack_ex
In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix circular locking dependency in run_unpack_ex Syzbot reported a circular locking dependency between wnd->rw_lock (sbi->used.bitmap) and ni->file.run_lock. The deadlock scenario: 1. ntfs_extend_mft() takes ni->file.run_lock then wnd->rw_lock. 2. run_unpack_ex() takes wnd->rw_lock then tries to acquire ni->file.run_lock inside ntfs_refresh_zone(). This creates an AB-BA deadlock. Fix this by using down_read_trylock() instead of down_read() when acquiring run_lock in run_unpack_ex(). If the lock is contended, skip ntfs_refresh_zone() - the MFT zone will be refreshed on the next MFT operation. This breaks the circular dependency since we never block waiting for run_lock while holding wnd->rw_lock.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 57f7979aefdcef66326bda47e07ee0d8be64bf21 | affected | git | d60f09d2d16c44a797d8cb67015cde2508720506 | Unavailable | None listed |
| db7fc56646cafe39599a4c21f1398e2bdfd5c185 | affected | git | 76016d15bbd90caa0ce7765fddf9bde8e943e601 | Unavailable | None listed |
| 5fc982fe7eca9d0cf7b25832450ebd4f7c8e1c36 | affected | git | b014372b62237521444ee51384549bdf48b79015 | Unavailable | None listed |
| 5fc982fe7eca9d0cf7b25832450ebd4f7c8e1c36 | affected | git | b8d22d9d8260b0f4f4d8e2898c98037c9982ea66 | Unavailable | None listed |
| 5fc982fe7eca9d0cf7b25832450ebd4f7c8e1c36 | affected | git | 08ce2fee1b869ecbfbd94e0eb2630e52203a2e03 | Unavailable | None listed |
| 6.6.66 | affected | semver | 6.6.160 | Unavailable | None listed |
| 6.12.5 | affected | semver | 6.12.114 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.13 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.16 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.6 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |