kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: drm/xe: Make dma-fences compliant with the safe access rules CVE-2025-38703 kernel: smb: client: let recvdone verify dataoffset, datalength and remainingdatalength CVE-2025-39933 kernel:...

RockyLinux 8 : kernel-rt (RLSA-2026:0443)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:0443 advisory. kernel: media: rc: fix races with imondisconnect CVE-2025-39993 kernel: sctp: avoid NULL dereference when chunk data buffer is missing CVE-2025-40240...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000845)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000845 advisory. net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly validate auth replies, which allows remote attackers to cause a denial of...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001035)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001035 advisory. net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001121)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001121 advisory. A flaw was found in the way signature calculation was handled by cephx authentication protocol. An attacker having access to ceph cluster network who is able to alte...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000846)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000846 advisory. Buffer overflow in net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, allows remote attackers to cause a denial of service memory corruption and...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000946)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000946 advisory. The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which allows local users to cause ...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001636)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001636 advisory. It was found that cephx authentication protocol did not verify ceph clients correctly and was vulnerable to replay attack. Any attacker having access to ceph cluster...

MiracleLinux 7 : sos-3.2-35.3.0.1.el7.AXS7 (AXSA:2016-110:01)

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2016-110:01 advisory. Sos is a set of tools that gathers information about system hardware and configuration. The information can then be used for diagnostic purposes and debugging...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001976)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001976 advisory. net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003168)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003168 advisory. A flaw was found in the way signature calculation was handled by cephx authentication protocol. An attacker having access to ceph cluster network who is able to alte...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003233)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003233 advisory. It was found that cephx authentication protocol did not verify ceph clients correctly and was vulnerable to replay attack. Any attacker having access to ceph cluster...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002778)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002778 advisory. It was found that cephx authentication protocol did not verify ceph clients correctly and was vulnerable to replay attack. Any attacker having access to ceph cluster...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002529)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002529 advisory. net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly validate auth replies, which allows remote attackers to cause a denial of...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002229)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002229 advisory. Buffer overflow in net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, allows remote attackers to cause a denial of service memory corruption and...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002268)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002268 advisory. net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly validate auth replies, which allows remote attackers to cause a denial of...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002074)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002074 advisory. The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which allows local users to cause ...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002323)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002323 advisory. net/ceph/authx.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to...