diff --git a/meta-oe/recipes-support/hdf5/files/CVE-2026-17573.patch b/meta-oe/recipes-support/hdf5/files/CVE-2026-17573.patch
new file mode 100644
index 0000000000..a7411b5ed6
--- /dev/null
+++ b/meta-oe/recipes-support/hdf5/files/CVE-2026-17573.patch
@@ -0,0 +1,51 @@
+From 56bcbf7fd94e102e9e5d5aed24faed33beecdb97 Mon Sep 17 00:00:00 2001
+From: jhendersonHDF <jhenderson@hdfgroup.org>
+Date: Tue, 27 Jan 2026 05:55:38 -0600
+Subject: [PATCH] Fix double-free issue in H5D__chunk_copy (#6160)
+
+Fix double-free caused by loss of buffer pointer after re-allocation
+
+CVE: CVE-2026-17573
+Upstream-Status: Backport [https://github.com/HDFGroup/hdf5/commit/dd3080a58cc6bb86f3b34284399915da9e513262]
+
+Backport Changes:
+- Omitted CHANGELOG.md file changes
+
+Co-authored-by: Larry Knox <lrknox@hdfgroup.org>
+(cherry picked from commit dd3080a58cc6bb86f3b34284399915da9e513262)
+Signed-off-by: Yogita Urade <yurade@cisco.com>
+---
+ src/H5Dchunk.c | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c
+index 4727cc5d12..86340be16e 100644
+--- a/src/H5Dchunk.c
++++ b/src/H5Dchunk.c
+@@ -6809,7 +6809,7 @@ H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src, H5O_layout_chunk
+                 H5O_storage_chunk_t *storage_dst, const H5S_extent_t *ds_extent_src, H5T_t *dt_src,
+                 const H5O_pline_t *pline_src, H5O_copy_t *cpy_info)
+ {
+-    H5D_chunk_it_ud3_t udata;                       /* User data for iteration callback */
++    H5D_chunk_it_ud3_t udata = {0};                 /* User data for iteration callback */
+     H5D_chk_idx_info_t idx_info_dst;                /* Dest. chunked index info */
+     H5D_chk_idx_info_t idx_info_src;                /* Source chunked index info */
+     int                sndims;                      /* Rank of dataspace */
+@@ -6972,6 +6972,5 @@ H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src, H5O_layout_chunk
+         HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for raw data chunk");
+     /* Initialize the callback structure for the source */
+-    memset(&udata, 0, sizeof udata);
+     udata.common.layout    = layout_src;
+     udata.common.storage   = storage_src;
+     udata.file_src         = f_src;
+@@ -7023,9 +7022,9 @@ H5D__chunk_copy(H5F_t *f_src, H5O_storage_chunk_t *storage_src, H5O_layout_chunk
+         } /* end for */
+     }
++done:
+     /* I/O buffers may have been re-allocated */
+     buf = udata.buf;
+     bkg = udata.bkg;
+-done:
+     if (dt_dst && (H5T_close(dt_dst) < 0))
+         HDONE_ERROR(H5E_DATASET, H5E_CANTCLOSEOBJ, FAIL, "can't close temporary datatype");
+     if (dt_mem && (H5T_close(dt_mem) < 0))
diff --git a/meta-oe/recipes-support/hdf5/hdf5_1.14.4-3.bb b/meta-oe/recipes-support/hdf5/hdf5_1.14.4-3.bb
index 88e0f0a1ac..fffd5b7b37 100644
--- a/meta-oe/recipes-support/hdf5/hdf5_1.14.4-3.bb
+++ b/meta-oe/recipes-support/hdf5/hdf5_1.14.4-3.bb
@@ -31,6 +31,7 @@ SRC_URI = " \
     file://CVE-2025-2308.patch \
     file://CVE-2025-6857.patch \
     file://CVE-2026-17572.patch \
+    file://CVE-2026-17573.patch \
 "
 SRC_URI[sha256sum] = "019ac451d9e1cf89c0482ba2a06f07a46166caf23f60fea5ef3c37724a318e03"