CVE-2026-89498

orangefs: fix double-free of trailer_buf on readdir copy failure

State: Published
Severity: Not scored
Published: Sep 11, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	382f4581e67f57209c7aa67e39f26ba076306a2e to before 712c4235fcc73c11a2f1d59a499d489e49c374a4Affected 382f4581e67f57209c7aa67e39f26ba076306a2e to before 433c2e470053cc9c712314d3d8c3dfbc862d68ebAffected 382f4581e67f57209c7aa67e39f26ba076306a2e to before 6e5924644ef4bce06a3cbb7cb841a8bbfdfc03adAffected 382f4581e67f57209c7aa67e39f26ba076306a2e to before 9c9eacc47c618ed6d7d35fe75a40d294c8cdbffaAffected 382f4581e67f57209c7aa67e39f26ba076306a2e to before 2f5454a25127854c232fde5d1d65d16fbcd42d43Affected 382f4581e67f57209c7aa67e39f26ba076306a2e to before f796f38a324e89547738f4b70cc33be5be2bc6daAffected 382f4581e67f57209c7aa67e39f26ba076306a2e to before 519f4146b8b8c5f20c2ad01913acd6df2df8fc8eAffected 382f4581e67f57209c7aa67e39f26ba076306a2e to before f574296be7f46eb60beca851240b526df232f480Affected
LinuxLinux	4.12Affected before 4.12Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.109 through 6.12.Not affected 6.18.50 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

382f4581e67f57209c7aa67e39f26ba076306a2e to before 712c4235fcc73c11a2f1d59a499d489e49c374a4Affected
382f4581e67f57209c7aa67e39f26ba076306a2e to before 433c2e470053cc9c712314d3d8c3dfbc862d68ebAffected
382f4581e67f57209c7aa67e39f26ba076306a2e to before 6e5924644ef4bce06a3cbb7cb841a8bbfdfc03adAffected
382f4581e67f57209c7aa67e39f26ba076306a2e to before 9c9eacc47c618ed6d7d35fe75a40d294c8cdbffaAffected
382f4581e67f57209c7aa67e39f26ba076306a2e to before 2f5454a25127854c232fde5d1d65d16fbcd42d43Affected
382f4581e67f57209c7aa67e39f26ba076306a2e to before f796f38a324e89547738f4b70cc33be5be2bc6daAffected
382f4581e67f57209c7aa67e39f26ba076306a2e to before 519f4146b8b8c5f20c2ad01913acd6df2df8fc8eAffected
382f4581e67f57209c7aa67e39f26ba076306a2e to before f574296be7f46eb60beca851240b526df232f480Affected

LinuxLinux

4.12Affected
before 4.12Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.109 through 6.12.*Not affected
6.18.50 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

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