kernel: mm/huge_memory: update file PMD counter before folio_put()

A flaw was found in the Linux kernel's memory management, specifically within the huge page mechanism. When a huge page is split, the system updates a counter after releasing a reference to the memory. This timing issue can lead to the system attempting to read from memory that has already been...

kernel security, bug fix, and enhancement update

4.18.0-553.155.1 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and...

SUSE CVE-2026-68232

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Fix MM reference leak in drmgpusvmrangeevict If kvmallocarray fails in drmgpusvmrangeevict, the MM reference acquired earlier is not released, resulting in a reference leak. Fix this by dropping the MM reference on th...

CVE-2026-72027

A flaw was found in the Linux kernel's memory management subsystem, specifically within the mm/compaction component. When the freepagesprepare function fails, the compactionfree function does not properly handle this error. This oversight can lead to pages that are either hardware poisoned...

AZL-96273 CVE-2026-74482 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: unlock immaprwsem before releasing after-split folios foliosplit keeps dereferencing the mapping after the split: shmemunchargemapping-host and remappage while the folios are still frozen/locked, and...

CVE-2026-74576

Summary of CVE-2026-74576 (Linux kernel) : The vulnerability stems from the slab allocator allowing unbounded recursion in the free path due to cycles formed when obj_exts arrays are allocated across KMALLOC_NORMAL caches. Specifically, slabs can form a cycle by allocating each other’s obj_exts a...

CVE-2026-74576 mm/slab: prevent unbounded recursion in free path with new kmalloc type

In the Linux kernel, the following vulnerability has been resolved: mm/slab: prevent unbounded recursion in free path with new kmalloc type Commit 280ea9c3154b "mm/slab: avoid allocating slabobjext array from its own slab" avoided recursive allocation of objexts from kmalloc caches of the same...

CVE-2026-74481

In the Linux kernel, the following vulnerability has been resolved: mm/pagereporting: use systemfreezablewq to fix UAF during suspend During PM freeze e.g. S3 suspend or S4 hibernation, device drivers like virtioballoon reset their underlying virtio devices and delete their virtqueues via...

CVE-2026-72172

In the Linux kernel, the following vulnerability has been resolved: mm/mminit: fix uninitialized struct pages for ZONEDEVICE If DAX memory is hotplugged into an unoccupied subsection of an early section, sectionactivate reuses the unoptimized boot memmap. However, compoundnrpages still assumes th...

CVE-2026-72173

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: do not warn on seeing non-migration pmd entry Patch series "mm/hmm: A fix and a selftest", v3. Patch 1 fixes a stale warning present from the time when only migration softleaf entries were supported at the PMD...

CVE-2026-72027

In the Linux kernel, the following vulnerability has been resolved: mm/compaction: handle freepagesprepare properly in compactionfree freepagesprepare can fail but compactionfree does not handle the failure case. Failed pages should not be added back to cc-freepages for future use, since they can...

UBUNTU-CVE-2026-72173

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: do not warn on seeing non-migration pmd entry Patch series "mm/hmm: A fix and a selftest", v3. Patch 1 fixes a stale warning present from the time when only migration softleaf entries were supported at the PMD...

CVE-2026-72027

In the Linux kernel, the following vulnerability has been resolved: mm/compaction: handle freepagesprepare properly in compactionfree freepagesprepare can fail but compactionfree does not handle the failure case. Failed pages should not be added back to cc-freepages for future use, since they can...

CVE-2026-72412

The CVE-2026-72412 entry concerns the Linux kernel s390/mm subsystem and the _PAGE_UNUSED (PAGE_UNUSED) PTE bit. Root cause: KVM could set the bit for unmapped guest pages; later paths could leave it set, so present pages might be treated as unused, risking guest corruption. The fix implemented i...

CVE-2026-72027 mm/compaction: handle free_pages_prepare() properly in compaction_free()

In the Linux kernel, the following vulnerability has been resolved: mm/compaction: handle freepagesprepare properly in compactionfree freepagesprepare can fail but compactionfree does not handle the failure case. Failed pages should not be added back to cc-freepages for future use, since they can...

CVE-2026-72027 mm/compaction: handle free_pages_prepare() properly in compaction_free()

In the Linux kernel, the following vulnerability has been resolved: mm/compaction: handle freepagesprepare properly in compactionfree freepagesprepare can fail but compactionfree does not handle the failure case. Failed pages should not be added back to cc-freepages for future use, since they can...

CVE-2026-72212: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/memoryhotplug: fix incorrect altmap passing in error path In createaltmapsandmemoryblocks, when archaddmemory succeeds with memmaponmemory enabled, the vmemmap pages are allocated from params.altmap. If creatememoryblockdevice...

CVE-2026-72178: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: always put unsuccessfully committed target pids damoncommittarget puts and gets the destination and the source target pids. It puts the destination target pid because it will be overwritten by the source target pid...

CVE-2026-72180: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: preserve pmdswpuffdwp on device-private PMD downgrade changenonpresenthugepmd rewrites a writable device-private PMD swap entry into a readable one without carrying pmdswpuffdwp across. The PTE-level...

PT-2026-72469

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: account pKVM reclaim against the VM mm Protected guest faults charge long term pins to the VM's mm. Teardown can run later from file release, where current-mm may be unrelated. Drop the charge from kvm-mm instead...