CVE-2026-72033
Published: August 18, 2026Last modified: August 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: orangefs: keep the readdir entry size 64-bit in fill_from_part() fill_from_part() computes the size of a directory entry in size_t but stores it in a __u32. An entry length near U32_MAX wraps it to a small value, bypasses the bounds check, and is then used to index the entry, reading far past the directory part -- an out-of-bounds read that oopses the kernel. Compute the size as a u64 so it cannot truncate; the bounds check then rejects the entry. The trailer is supplied by the userspace client.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.182-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
References
- https://git.kernel.org/stable/c/07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9
- https://git.kernel.org/stable/c/1679780f482feeb82acb5995587d4fb1d1fe82fd
- https://git.kernel.org/stable/c/18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfc
- https://git.kernel.org/stable/c/36723b28e3293047f087f4501f1ef4ead418dd84
- https://git.kernel.org/stable/c/82fc886e244c76fadf05ef1958aaf8815478ccde
- https://git.kernel.org/stable/c/a72bbb43689591c9d36e3bb45c2d4e688cf92682
- https://git.kernel.org/stable/c/e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729
- https://git.kernel.org/stable/c/fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1