CVE-2026-89498
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.
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)
- Published
- Modified
- Record from
- the NVD, synced
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