Red Hat Product Errata RHBA-2026:55438 - Bug Fix Advisory
Issued:
2026-08-17
Updated:
2026-08-17

RHBA-2026:55438 - Bug Fix Advisory

Synopsis

libxmlb bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for libxmlb is now available for Red Hat Enterprise Linux 8.

Description

XML is slow to parse and strings inside the document cannot be memory mapped as they do not have a trailing NUL char. The libxmlb library takes XML source, and converts it to a structured binary representation with a deduplicated string table -- where the strings have the NULs included. This allows an application to mmap the binary XML file, do an XPath query and return some strings without actually parsing the entire document. This is all done using (almost) zero allocations and no actual copying of the binary data.

Bug Fix(es) and Enhancement(s):

  • CLONE - RHEL 8.10 - dnf update fails due to missing libxmlb-devel-0.3.28 in CRB after libxmlb rebase to 0.3.28-1.el8_10 (JIRA:RHEL-240154)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le
  • Red Hat Enterprise Linux for ARM 64 8 aarch64
  • Red Hat CodeReady Linux Builder for x86_64 8 x86_64
  • Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
  • Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
  • Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64
  • Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64
  • Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le
  • Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x

Fixes

(none)

CVEs

(none)

References

(none)

Red Hat Enterprise Linux for x86_64 8

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
x86_64
libxmlb-0.3.28-2.el8_10.i686.rpm SHA-256: 21d681b154dbd9df088b923e0c6db771f39e48b751ecb83dfe775e87099301f4
libxmlb-0.3.28-2.el8_10.x86_64.rpm SHA-256: a6e0be16c128c458f73b6bde6624f0ec2fbe9f348721b7e76399a32df4edae73
libxmlb-debuginfo-0.3.28-2.el8_10.i686.rpm SHA-256: 257817e4c708710e63cf391e0953202e9fa098f2c8ed1fd8d85cdb92ae77890e
libxmlb-debuginfo-0.3.28-2.el8_10.x86_64.rpm SHA-256: 97436d5a86f4aeecbddd2971f28d52133198f55a84dc8f69d93bc052b51e84da
libxmlb-debugsource-0.3.28-2.el8_10.i686.rpm SHA-256: 459e93b77d2f585b47ed900dd5364f1bf7a83eec27317f5a907ad7280d246a10
libxmlb-debugsource-0.3.28-2.el8_10.x86_64.rpm SHA-256: 8c9dfbeed1097ad5c9c4ca56f60cb48c710b18b9972409a7883966240e9bf48b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.i686.rpm SHA-256: 7b1410536501a8ca9c82178d55063e5c23540eca49a764ff1f3b398cef3a9a47
libxmlb-tests-debuginfo-0.3.28-2.el8_10.x86_64.rpm SHA-256: 441898e86cb49ce77740afa7a3abcd0af0361309b4d2cb3193476b4a4c13c127

Red Hat Enterprise Linux for IBM z Systems 8

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
s390x
libxmlb-0.3.28-2.el8_10.s390x.rpm SHA-256: 2d4f865ef0b06a7e842c46bea112dcab422a71f1cc50cac32b3430f05fce67cd
libxmlb-debuginfo-0.3.28-2.el8_10.s390x.rpm SHA-256: 77ca7c180d74b83688700d542a5b872319638294e2cbbaddb5e126b92e8badc4
libxmlb-debugsource-0.3.28-2.el8_10.s390x.rpm SHA-256: 057b40b5bbe8a335113ac60f6d388adfc5fe7782eee384a6134b7d795152557b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.s390x.rpm SHA-256: c3f2346a575cec429ba9c2cb70e6bc0bc5d80eeed9ef34921fbafedd93e7de99

Red Hat Enterprise Linux for Power, little endian 8

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
ppc64le
libxmlb-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 05b3e338cfca8517656ecc2d0e6c6651d16a681c36a1b9b1493e3f3571112ccc
libxmlb-debuginfo-0.3.28-2.el8_10.ppc64le.rpm SHA-256: cb32d906a82a7c2d506b7be24bfc1e17f7348dfc935c6c01f29896e76ca10e39
libxmlb-debugsource-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 34ba9636d343377e44b91d5fd411762caebf87c6d8d22f97095e5b769cc5c712
libxmlb-tests-debuginfo-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 11b7b07933f02a7a6c2f858a0caf6f962bb9aebcd259839e64ad8d9e028c1e4c

Red Hat Enterprise Linux for ARM 64 8

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
aarch64
libxmlb-0.3.28-2.el8_10.aarch64.rpm SHA-256: d1fc993a59db1311f87e552b105065bae6f427ae30a849a5df48a5c090632fdb
libxmlb-debuginfo-0.3.28-2.el8_10.aarch64.rpm SHA-256: c3be3b82e53e7dfb6c4ae79d8168435a4a6d989cb2feee7581e52034d16d5fb1
libxmlb-debugsource-0.3.28-2.el8_10.aarch64.rpm SHA-256: 9d4b39ec7b30a48a7c45e1b7821ccfbfd862623075128ab2bbe1b8e5c26cbc1b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.aarch64.rpm SHA-256: d51eaf68b39efaed744caab6d0d6f407bfb769e0353a63261a8c5f2d8aedc0db

Red Hat CodeReady Linux Builder for x86_64 8

SRPM
x86_64
libxmlb-debuginfo-0.3.28-2.el8_10.i686.rpm SHA-256: 257817e4c708710e63cf391e0953202e9fa098f2c8ed1fd8d85cdb92ae77890e
libxmlb-debuginfo-0.3.28-2.el8_10.x86_64.rpm SHA-256: 97436d5a86f4aeecbddd2971f28d52133198f55a84dc8f69d93bc052b51e84da
libxmlb-debugsource-0.3.28-2.el8_10.i686.rpm SHA-256: 459e93b77d2f585b47ed900dd5364f1bf7a83eec27317f5a907ad7280d246a10
libxmlb-debugsource-0.3.28-2.el8_10.x86_64.rpm SHA-256: 8c9dfbeed1097ad5c9c4ca56f60cb48c710b18b9972409a7883966240e9bf48b
libxmlb-devel-0.3.28-2.el8_10.i686.rpm SHA-256: 96bb1b13fbb231a4c93de41703eb8136013fb3749628fc37da35d07eb65b72b6
libxmlb-devel-0.3.28-2.el8_10.x86_64.rpm SHA-256: 18059417f62cb728e6f4f0ca87afcfb914d5a30ac2754fa9cab4119b5744e44c
libxmlb-tests-debuginfo-0.3.28-2.el8_10.i686.rpm SHA-256: 7b1410536501a8ca9c82178d55063e5c23540eca49a764ff1f3b398cef3a9a47
libxmlb-tests-debuginfo-0.3.28-2.el8_10.x86_64.rpm SHA-256: 441898e86cb49ce77740afa7a3abcd0af0361309b4d2cb3193476b4a4c13c127

Red Hat CodeReady Linux Builder for Power, little endian 8

SRPM
ppc64le
libxmlb-debuginfo-0.3.28-2.el8_10.ppc64le.rpm SHA-256: cb32d906a82a7c2d506b7be24bfc1e17f7348dfc935c6c01f29896e76ca10e39
libxmlb-debugsource-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 34ba9636d343377e44b91d5fd411762caebf87c6d8d22f97095e5b769cc5c712
libxmlb-devel-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 18aa6a149876f6ac41d6cec6f412f8e5d1adc6631bca5d222deb6a021bc84ecc
libxmlb-tests-debuginfo-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 11b7b07933f02a7a6c2f858a0caf6f962bb9aebcd259839e64ad8d9e028c1e4c

Red Hat CodeReady Linux Builder for ARM 64 8

SRPM
aarch64
libxmlb-debuginfo-0.3.28-2.el8_10.aarch64.rpm SHA-256: c3be3b82e53e7dfb6c4ae79d8168435a4a6d989cb2feee7581e52034d16d5fb1
libxmlb-debugsource-0.3.28-2.el8_10.aarch64.rpm SHA-256: 9d4b39ec7b30a48a7c45e1b7821ccfbfd862623075128ab2bbe1b8e5c26cbc1b
libxmlb-devel-0.3.28-2.el8_10.aarch64.rpm SHA-256: e1ec21e802e912320400bbdb242c68be9bc3070897291522a51053a399f87271
libxmlb-tests-debuginfo-0.3.28-2.el8_10.aarch64.rpm SHA-256: d51eaf68b39efaed744caab6d0d6f407bfb769e0353a63261a8c5f2d8aedc0db

Red Hat CodeReady Linux Builder for IBM z Systems 8

SRPM
s390x
libxmlb-debuginfo-0.3.28-2.el8_10.s390x.rpm SHA-256: 77ca7c180d74b83688700d542a5b872319638294e2cbbaddb5e126b92e8badc4
libxmlb-debugsource-0.3.28-2.el8_10.s390x.rpm SHA-256: 057b40b5bbe8a335113ac60f6d388adfc5fe7782eee384a6134b7d795152557b
libxmlb-devel-0.3.28-2.el8_10.s390x.rpm SHA-256: 17752d830c6e5142d5e670512b7fa94cadba6670859e8974c05054123f6c252b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.s390x.rpm SHA-256: c3f2346a575cec429ba9c2cb70e6bc0bc5d80eeed9ef34921fbafedd93e7de99

Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
x86_64
libxmlb-0.3.28-2.el8_10.i686.rpm SHA-256: 21d681b154dbd9df088b923e0c6db771f39e48b751ecb83dfe775e87099301f4
libxmlb-0.3.28-2.el8_10.x86_64.rpm SHA-256: a6e0be16c128c458f73b6bde6624f0ec2fbe9f348721b7e76399a32df4edae73
libxmlb-debuginfo-0.3.28-2.el8_10.i686.rpm SHA-256: 257817e4c708710e63cf391e0953202e9fa098f2c8ed1fd8d85cdb92ae77890e
libxmlb-debuginfo-0.3.28-2.el8_10.x86_64.rpm SHA-256: 97436d5a86f4aeecbddd2971f28d52133198f55a84dc8f69d93bc052b51e84da
libxmlb-debugsource-0.3.28-2.el8_10.i686.rpm SHA-256: 459e93b77d2f585b47ed900dd5364f1bf7a83eec27317f5a907ad7280d246a10
libxmlb-debugsource-0.3.28-2.el8_10.x86_64.rpm SHA-256: 8c9dfbeed1097ad5c9c4ca56f60cb48c710b18b9972409a7883966240e9bf48b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.i686.rpm SHA-256: 7b1410536501a8ca9c82178d55063e5c23540eca49a764ff1f3b398cef3a9a47
libxmlb-tests-debuginfo-0.3.28-2.el8_10.x86_64.rpm SHA-256: 441898e86cb49ce77740afa7a3abcd0af0361309b4d2cb3193476b4a4c13c127

Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
aarch64
libxmlb-0.3.28-2.el8_10.aarch64.rpm SHA-256: d1fc993a59db1311f87e552b105065bae6f427ae30a849a5df48a5c090632fdb
libxmlb-debuginfo-0.3.28-2.el8_10.aarch64.rpm SHA-256: c3be3b82e53e7dfb6c4ae79d8168435a4a6d989cb2feee7581e52034d16d5fb1
libxmlb-debugsource-0.3.28-2.el8_10.aarch64.rpm SHA-256: 9d4b39ec7b30a48a7c45e1b7821ccfbfd862623075128ab2bbe1b8e5c26cbc1b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.aarch64.rpm SHA-256: d51eaf68b39efaed744caab6d0d6f407bfb769e0353a63261a8c5f2d8aedc0db

Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
ppc64le
libxmlb-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 05b3e338cfca8517656ecc2d0e6c6651d16a681c36a1b9b1493e3f3571112ccc
libxmlb-debuginfo-0.3.28-2.el8_10.ppc64le.rpm SHA-256: cb32d906a82a7c2d506b7be24bfc1e17f7348dfc935c6c01f29896e76ca10e39
libxmlb-debugsource-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 34ba9636d343377e44b91d5fd411762caebf87c6d8d22f97095e5b769cc5c712
libxmlb-tests-debuginfo-0.3.28-2.el8_10.ppc64le.rpm SHA-256: 11b7b07933f02a7a6c2f858a0caf6f962bb9aebcd259839e64ad8d9e028c1e4c

Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10

SRPM
libxmlb-0.3.28-2.el8_10.src.rpm SHA-256: 2c378625116fadd4f62ce9a1a40cbc01d6e13689e560d4313a425ca194a96562
s390x
libxmlb-0.3.28-2.el8_10.s390x.rpm SHA-256: 2d4f865ef0b06a7e842c46bea112dcab422a71f1cc50cac32b3430f05fce67cd
libxmlb-debuginfo-0.3.28-2.el8_10.s390x.rpm SHA-256: 77ca7c180d74b83688700d542a5b872319638294e2cbbaddb5e126b92e8badc4
libxmlb-debugsource-0.3.28-2.el8_10.s390x.rpm SHA-256: 057b40b5bbe8a335113ac60f6d388adfc5fe7782eee384a6134b7d795152557b
libxmlb-tests-debuginfo-0.3.28-2.el8_10.s390x.rpm SHA-256: c3f2346a575cec429ba9c2cb70e6bc0bc5d80eeed9ef34921fbafedd93e7de99

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