[CLSA-2026:1779356485] samba: Fix of CVE-2021-20251
Type:
security
Severity:
Moderate
Release date:
2026-05-22 16:40:36 UTC
Description:
- CVE-2021-20251: fix race condition in the password lockout code that allowed determined attackers to exceed the configured bad-password count by issuing concurrent authentication / SAMR password-change requests for the same account; the bad-password-count read and the follow-up increment now run under a per-user named mutex in both check_sam_security() and pass_oem_change()
Updated packages:
  • ctdb-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:d8493e2bdbf1285ce566165d52db7f9b4273a56c7d71cb29d096f6eab7199800
  • ctdb-tests-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:6acf4387d3080e49a624122c48610a80c3b821502a9c19732159f6e09298a6f6
  • libsmbclient-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:6397051e6a77aa5b101656414e477adfeddbc7a16c09029a68f08aa7c0c0740c
  • libsmbclient-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:baf1c2fe725ad860952135f059245dd29887b76c9732d01988a7b7e2f7b77740
  • libsmbclient-devel-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:61bfd8cf983cb7996c78ae12684bda7296fcac48ce653849f5fbd25ee48880b6
  • libsmbclient-devel-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:2b51ccb7652e97e6c78ad7bdf23d272c5c1f9710df9cef7165fef1ba9cfe9f57
  • libwbclient-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:7229d4add64eb7e13876d270891a10d6a5b6000deb281aa743a51bc8294a5de7
  • libwbclient-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:fb72745f6369f976bebde4188e34e466923c65cb305287c2e927288ec0617d5e
  • libwbclient-devel-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:ec4dd807584ef0920d0ac2116c2eeb013e9adb8cab6950e8e63252e6fe81c739
  • libwbclient-devel-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:1e431a303a692d79a21fe04a2c68dcc87b2eef2b9cd4d305a8876af6eb618112
  • samba-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:6a4d1fac4be95e1766faf2519539373386d1ad1fa71125275b1a7735e6b890df
  • samba-client-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:991d57ff69e578d9e3d50c6eef9b773928581a203049d9a945dcbc550c8f499e
  • samba-client-libs-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:040f3373a06cdd3b1d310e898fe4b3a7e22c712d915b68ccdd96bff90ff3d719
  • samba-client-libs-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:3e0c13ea68ff9ed5f0174119006cc023402765ff196b3e0a985d927c79788694
  • samba-common-4.10.16-25.el7_9.tuxcare.els8.noarch.rpm
    sha:bdc70d36838b4e7ada73de7c87be19bbe97a058c063fc2373b5d5cf0b4399c07
  • samba-common-libs-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:77f74bbf6eb6416020d6cebbaac92155416f14986e11d8679c504ad65914a061
  • samba-common-libs-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:7fb3402a160d8b273f24bac4b7a0b3d2dbf312c0ca569b0992689e14e1d74395
  • samba-common-tools-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:9528fb008f8ef44e1be774d35be6e89e437e1896be70cd9ea520fa6f9003b5af
  • samba-dc-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:3c5c2f5de5236fc1359ff5ac314fee804af72a4553c9543df1a4d269f64ce6a7
  • samba-dc-libs-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:73d723c5addd8f1c8fe38fd588f1fb916499d62c3193b670c53a6e885dd05692
  • samba-devel-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:5b4a3ce3a9fd4c9e56be4337f8cfce8d1c1830a4b6b461d88cd5bd871c6cb3d7
  • samba-devel-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:bfd576475c551739ffe5bdd0513b06852fe4769d51e5f941c9865218338fa03e
  • samba-krb5-printing-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:d0ced69acc6f2a92445be2ce85dff13f285b6e18c0bfe7a28f81faa8082d1955
  • samba-libs-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:4f13f17dae49f4224fe2c2b031cd9e62d3cd48c41b0b811d1aa766e97ac70d66
  • samba-libs-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:faa97dbd0e31eccbe193bbe84129072e893b6aa0db36023c028b1cf1f52f2542
  • samba-pidl-4.10.16-25.el7_9.tuxcare.els8.noarch.rpm
    sha:9a957251da9ea38d069cd901220bfbfe4b34625a4e8a9446877930717c94dfbd
  • samba-python-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:d1e363c749f0d447a99f68335efeffdc7db6a78e50882dac6c11bbf69cca8f34
  • samba-python-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:fc7f03a781b309f7fc8893f0ef84fbdab97529a5bfaeb103698bd031135a42f4
  • samba-python-test-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:818c4227478cdc7392790a601b12f0b43ab68b0e21dfd4bee6d3679d70ffb45e
  • samba-test-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:a7770804cf692f636c3cd4ea87a08c2bdc25ac8d35a56933dcd42bc7c511b6c2
  • samba-test-libs-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:be05e09ff75e321530da2708731f50481a958f1c863be2f8f0ee7b50f9ff8531
  • samba-test-libs-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:b9c8c15bfc24e855364bf83de6f42c94f79d50824bf653245361839058e4bbdb
  • samba-vfs-glusterfs-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:792c7d9c1783351208dd4d593180767294600849fc5429bf22033ba60b73847e
  • samba-winbind-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:95141fb2160d9e612e686bb537f3d038889669e4b4ed3553374e8800f989ed09
  • samba-winbind-clients-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:b1dca87e6c2468baf3aab514cb4daa35db93a0cef6e5baa692788ea325c4c68c
  • samba-winbind-krb5-locator-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:ed6ca9d96a5a2a4929dbbeb543b35d762d46a26f9b60ae3a8c3531dd2ba979ea
  • samba-winbind-modules-4.10.16-25.el7_9.tuxcare.els8.i686.rpm
    sha:8ce3385ba32befe537a93d6abf1073ff7fe71f13bc0c7cf1c229665238b40731
  • samba-winbind-modules-4.10.16-25.el7_9.tuxcare.els8.x86_64.rpm
    sha:21179d9edc2e75e86fd375d32744d638e2afd63f5f8341b657687876233d2e2d
Notes:
This page is generated automatically and has not been checked for errors. For clarification or corrections please contact the CloudLinux Packaging Team.