CVE-2026-43245
Published: May 9, 2026Last modified: June 2, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ntfs: ->d_compare() must not block ... so don't use __getname() there. Switch it (and ntfs_d_hash(), while we are at it) to kmalloc(PATH_MAX, GFP_NOWAIT). Yes, ntfs_d_hash() almost certainly can do with smaller allocations, but let ntfs folks deal with that - keep the allocation size as-is for now. Stop abusing names_cachep in ntfs, period - various uses of that thing in there have nothing to do with pathnames; just use k[mz]alloc() and be done with that. For now let's keep sizes as-in, but AFAICS none of the users actually want PATH_MAX.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Not affected (6.1.33-r0) |
| 25 LTS | linux-lts | Fixed (6.12.92-r0) | |
| Stream | linux-lts | Fixed (6.12.92-r0) |
References
- https://git.kernel.org/stable/c/02ecc0978c459fd90bb24b2a946dd16d43e68fe5
- https://git.kernel.org/stable/c/142c444a395f4d26055c8a4473e228bb86283f1e
- https://git.kernel.org/stable/c/1be7ca86ce1794d966fda5d82181bc978b150fbc
- https://git.kernel.org/stable/c/ca2a04e84af79596e5cd9cfe697d5122ec39c8ce
- https://git.kernel.org/stable/c/fb4b1f969ba01fa1d4088467a02fc1e5f0806710