Red Hat Product Errata RHSA-2026:28056 - Security Advisory Issued: 2026-06-23 Updated: 2026-06-23 RHSA-2026:28056 - Security Advisory Overview Updated Packages Synopsis Important: samba security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for samba is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. Security Fix(es): samba: Missing access check on reparse point operations (CVE-2026-1933) samba: vfs_worm does not block directory modification (CVE-2026-2340) samba: group policy certificate enrollment uses http:// without validation (CVE-2026-3012) samba: Samba: Remote Code Execution in printing subsystem via unescaped job description (CVE-2026-4480) samba: Remote Code Execution in SAMR (CVE-2026-4408) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 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 - Extended Update Support Extension 8.8 x86_64 Red Hat Enterprise Linux Server - TUS 8.8 x86_64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64 Fixes BZ - 2447317 - CVE-2026-1933 samba: Missing access check on reparse point operations BZ - 2447318 - CVE-2026-2340 samba: vfs_worm does not block directory modification BZ - 2447319 - CVE-2026-3012 samba: group policy certificate enrollment uses http:// without validation BZ - 2452232 - CVE-2026-4480 samba: Samba: Remote Code Execution in printing subsystem via unescaped job description BZ - 2479762 - CVE-2026-4408 samba: Remote Code Execution in SAMR CVEs CVE-2026-1933 CVE-2026-2340 CVE-2026-3012 CVE-2026-4408 CVE-2026-4480 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.8 SRPM samba-4.17.5-7.el8_8.1.src.rpm SHA-256: fe5375595539472e0c4e9be896380e217c5a077a3b857cb6928b958674a30128 x86_64 ctdb-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: a42d17b97f646bbef4cd6c3a87080fa6989bf8404c764eae21be5d73fe58ff36 ctdb-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: c047c84c9485bf0f05fc3835a4f0e43bbfb18a4233ee09c3012aefa68d7aefa1 ctdb-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: bb075e0f9d7d785d4624149f361970bfaa20fbce081a1d3c52c4741f22ee26b5 ctdb-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: bb075e0f9d7d785d4624149f361970bfaa20fbce081a1d3c52c4741f22ee26b5 libnetapi-4.17.5-7.el8_8.1.i686.rpm SHA-256: 6d764e77691b4f03b0d86deebb8abf059f19b3c8e780ced7070b47f36f63bd66 libnetapi-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: c847963245930eb876b30dc6451d335cfe8d12ef3db6a8371e7c1d4f8e0b9640 libnetapi-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 624a8fffddab594f5cff92ebcfecf4e04388df595b18847129bb64ad1c3a2ff8 libnetapi-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 044d1cbe536713580730314577a9556ccaa59d4c96a8aec19e4258253d0846ae libnetapi-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 044d1cbe536713580730314577a9556ccaa59d4c96a8aec19e4258253d0846ae libsmbclient-4.17.5-7.el8_8.1.i686.rpm SHA-256: fd748f08b4a6a614b5b0b4514c9bc2dba29c362344e265e02801ca678ef564b8 libsmbclient-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: b7125437863d5b49b315f8d7d3716b2229f1aefd61d4fffe1dc17033feded69e libsmbclient-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 9552dd2ff53036c28027797c8768ebeab18838de378a512d4d2727105df7a716 libsmbclient-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 5d56573d2195f617863762833441b2ac1771ef5a516b219d0ca5606ec295633f libsmbclient-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 5d56573d2195f617863762833441b2ac1771ef5a516b219d0ca5606ec295633f libwbclient-4.17.5-7.el8_8.1.i686.rpm SHA-256: 187a329d88d7812292cf246a5918c80a50e72eef998647c89613b4a2f2cbaf2e libwbclient-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 08c3aca099c6338b7248b1b22e0eae7457b58202c2ee12fd529d4c921173a78b libwbclient-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 2ab7d56fe55774b683bee40efd1ac63f206638600c829c13ded05b010c47035c libwbclient-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: f35d34ba928c59090e33c3c949c74fd84eb7ca2e334cafd62d71445587720145 libwbclient-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: f35d34ba928c59090e33c3c949c74fd84eb7ca2e334cafd62d71445587720145 python3-samba-4.17.5-7.el8_8.1.i686.rpm SHA-256: 7089f1ba536f398ca347c9f13533b7a8f64c9a1b15dc564182ca48886a2ce068 python3-samba-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 5c0c4c88350e8ef6c848d834f80c879ba27da34871bb89c7124ae1ebf73ee933 python3-samba-dc-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 8c4427364e3ea5320a104ca5cbb8ebcef1000aa6a82e4e8cf06e8138685d6644 python3-samba-dc-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: f2b0a08c2e320c8f6922b2df4352f2c5e50f74e6e656047e7f5b1a163eec3e82 python3-samba-dc-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: eb21af202f52cc498c95df178dab388edc1f78614b4abc9712f2b2cc66a7e78e python3-samba-dc-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: eb21af202f52cc498c95df178dab388edc1f78614b4abc9712f2b2cc66a7e78e python3-samba-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 95245f1d8dd0424fc84f8170169f21841e1ae86fb4d8dd2875ba0b0e728a35a5 python3-samba-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 6d2b53f90b10b7b9725aef774f969689879f3ec3637d6a9e2c56af48e33b4aa6 python3-samba-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 6d2b53f90b10b7b9725aef774f969689879f3ec3637d6a9e2c56af48e33b4aa6 python3-samba-test-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: d5e6e1bed75a26b85a360b33bcd0e27903cb8c7f4beede0c4fb7e03b4638ac79 samba-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 9937f6391a597409e739100bd385686a113602917c65ab2934621d119affc918 samba-client-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: f41317ff866fa8f7a8d8ba6d41ae7386d1fbb7cd7796f556c61abb928fc5e931 samba-client-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: ee9c9f3fb43f6ad92146f4e18fc362b4c73c27ca6e33fe881d4e59e3e29e8d4b samba-client-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: e9255d8133cc9a9e2907b95f075687f88f9ee36d0605e2198b85d548b43b3f3f samba-client-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: e9255d8133cc9a9e2907b95f075687f88f9ee36d0605e2198b85d548b43b3f3f samba-client-libs-4.17.5-7.el8_8.1.i686.rpm SHA-256: 8520ad375b2a1cd10b949aec335ef0c96bef0658d3c69a43f23efab87e7c66d6 samba-client-libs-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 72acec132d35e302e5b45d2bdb8296776e36dc5fc9ff00ca2f3aac2a1fa2ff3b samba-client-libs-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 9481ca895323ad58e9050643818cdef32c4c846d28b7ed72adf6fdaeba314c20 samba-client-libs-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: bd0cf99250deb3bb6d15f56e00841deafa8c89c73db9b368dbb063568d5cdff0 samba-client-libs-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: bd0cf99250deb3bb6d15f56e00841deafa8c89c73db9b368dbb063568d5cdff0 samba-common-4.17.5-7.el8_8.1.noarch.rpm SHA-256: bf52d81e4e351f90fb0e6b0564704e7042e0a6ed2e69d355a75092cbe394bd51 samba-common-libs-4.17.5-7.el8_8.1.i686.rpm SHA-256: 38d0efb80e4ea55ff08b47e7bb744489ad898294dadef3dc348cb6379ddccc49 samba-common-libs-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 603cb761e861998deae51e28fc33a3796e823526861708dd42592175229a4c0d samba-common-libs-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 045ac7d1f24356e9c2549a04a87d723519f9ff9cbdf168a731a1cf5767fa2ad3 samba-common-libs-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 265090957e920437268f48e94e36454ae48a46d484121c90b8592707b5dfa095 samba-common-libs-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 265090957e920437268f48e94e36454ae48a46d484121c90b8592707b5dfa095 samba-common-tools-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: d4e694dded35d6660a90f23b1070580b6927abef7930137236ab0153f14716f9 samba-common-tools-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: 49c1dade8380acdf18f5d0a1bcd3baf12dff9193d200e7fffeccb64f4e9b7106 samba-common-tools-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 44424c022c4421f8b0d8f3955707b676d0ebb90e7901e653da935cd2daca2f22 samba-common-tools-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 44424c022c4421f8b0d8f3955707b676d0ebb90e7901e653da935cd2daca2f22 samba-dc-libs-4.17.5-7.el8_8.1.i686.rpm SHA-256: 03b163a198ab9dec9c9d1b5a243aae0e3af6494916199e3aca75893912e89bc3 samba-dc-libs-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: ede1bb8155ad1ac7a14467e077de7ee87939dc1f4c548cbc30a6a8212abafe56 samba-dc-libs-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: a954eaed1116689ef6e77733d0b3e5bb647739f2dafc90183e61ba4d7f87313f samba-dc-libs-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 77f40df04e00e226da325280f5bce844590d8c5b0c30de35fe15af27078af49e samba-dc-libs-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 77f40df04e00e226da325280f5bce844590d8c5b0c30de35fe15af27078af49e samba-dcerpc-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 554c51c5b41c4fc2f95e57d244ebcd4f6f0aae6c2d0039281e1e344bc70adc9a samba-dcerpc-debuginfo-4.17.5-7.el8_8.1.i686.rpm SHA-256: b5aec09790993f4f341d3727962b2c7a3f769085f32df37a248190c5aa37a609 samba-dcerpc-debuginfo-4.17.5-7.el8_8.1.x86_64.rpm SHA-256: 5b6d2ee5491fa1f1440ca29dc39c636217d8925d1baa494c87b784be8d15df4d samba-dcerpc-debuginfo-4.17.5-7.el8_8.1.x86_64.r