Description
In the Linux kernel, the following vulnerability has been resolved:
orangefs: fix double-free of trailer_buf on readdir copy failure
On a readdir downcall, orangefs_devreq_write_iter() frees op->downcall.trailer_buf with vfree() when copy_from_iter_full() fails, but does not clear the pointer before goto Efault. The waiter in do_readdir() is then woken with a negative status and frees the same pointer again on its r < 0 path, causing a deterministic double-free. A client holding /dev/pvfs2-req triggers it by sending a readdir downcall whose declared trailer_size exceeds the bytes it supplies.
Clear the pointer after freeing so the readdir-side vfree() becomes a no-op.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < 712c4235fcc73c11a2f1d59a499d489e49c374a4; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < 433c2e470053cc9c712314d3d8c3dfbc862d68eb; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < 6e5924644ef4bce06a3cbb7cb841a8bbfdfc03ad; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < 9c9eacc47c618ed6d7d35fe75a40d294c8cdbffa; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < 2f5454a25127854c232fde5d1d65d16fbcd42d43; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < f796f38a324e89547738f4b70cc33be5be2bc6da; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < 519f4146b8b8c5f20c2ad01913acd6df2df8fc8e; >= 382f4581e67f57209c7aa67e39f26ba076306a2e, < f574296be7f46eb60beca851240b526df232f480 |
| Linux | Linux | 4.12 |
References
- https://git.kernel.org/stable/c/2f5454a25127854c232fde5d1d65d16fbcd42d43
- https://git.kernel.org/stable/c/433c2e470053cc9c712314d3d8c3dfbc862d68eb
- https://git.kernel.org/stable/c/519f4146b8b8c5f20c2ad01913acd6df2df8fc8e
- https://git.kernel.org/stable/c/6e5924644ef4bce06a3cbb7cb841a8bbfdfc03ad
- https://git.kernel.org/stable/c/712c4235fcc73c11a2f1d59a499d489e49c374a4
- https://git.kernel.org/stable/c/9c9eacc47c618ed6d7d35fe75a40d294c8cdbffa
- https://git.kernel.org/stable/c/f574296be7f46eb60beca851240b526df232f480
- https://git.kernel.org/stable/c/f796f38a324e89547738f4b70cc33be5be2bc6da
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received