CVE-2023-53241 – nfsd: call op_release, even when op_func returns an error

CVE ID : CVE-2023-53241

Published : Sept. 15, 2025, 2:23 p.m. | 31 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

nfsd: call op_release, even when op_func returns an error

For ops with “trivial” replies, nfsd4_encode_operation will shortcut
most of the encoding work and skip to just marshalling up the status.
One of the things it skips is calling op_release. This could cause a
memory leak in the layoutget codepath if there is an error at an
inopportune time.

Have the compound processing engine always call op_release, even when
op_func sets an error in op->status. With this change, we also need
nfsd4_block_get_device_info_scsi to set the gd_device pointer to NULL
on error to avoid a double free.

Severity: 0.0 | NA

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