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...

kernel: drm/amdgpu: fix amdgpu_hmm_range_get_pages

A flaw was found in the Linux kernel, specifically within the drm/amdgpu component. This vulnerability arises from incorrect handling of a notifier sequence in the amdgpuhmmrangegetpages function, where the sequence can be read more than once. This can lead to the system processing invalid memory...

kernel: drm/amdgpu: fix amdgpu_hmm_range_get_pages

A flaw was found in the Linux kernel, specifically within the drm/amdgpu component. This vulnerability arises from incorrect handling of a notifier sequence in the amdgpuhmmrangegetpages function, where the sequence can be read more than once. This can lead to the system processing invalid memory...

CVE-2026-68430

CVE-2026-68430 affects the Linux kernel, specifically the DRM AMDGPU gfx8 path. The vulnerability arises from an unnecessary BUG_ON() that could crash the kernel; the fix is to drop this BUG_ON() check. The issue was resolved by cherry-picking the corresponding patch (commit 4d7c25208ca612b754f3b...

CVE-2026-68430: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx8: drop unecessary BUGON There's no need to crash the kernel for this case. cherry picked from commit 4d7c25208ca612b754f3bf39e9f16e725b828891...

CVE-2026-68107

A flaw was found in the Linux kernel. Specifically, within the drm/amdgpu/vcn4 component, a time-of-check to time-of-use TOCTOU vulnerability exists. This occurs because the system re-reads the IB parameter length instead of reusing an already obtained value. This could allow a local attacker to...

CVE-2026-68102

A flaw was found in the Linux kernel's drm/amdgpu component, which manages AMD graphics hardware. When the graphics driver is unloaded, it may fail to properly release a memory resource. This oversight can lead to system instability if the driver attempts to reload, causing an error that prevents...

CVE-2026-68275

A flaw was found in the drm/amdgpu component of the Linux kernel. A local attacker, with the ability to issue ioctl commands to the render group, could trigger a null pointer dereference by requesting mapping information for an unmapped buffer object. This could lead to a system crash, resulting ...

CVE-2026-68272

A flaw was found in the Linux kernel's drm/amdgpu component. An unprivileged local attacker can exploit this vulnerability by submitting a specially crafted command with a zero-length chunk size for CPGFXSHADOW. This leads to improper memory access within the kernel, causing a system crash and a...

CVE-2026-68238

A flaw was found in the drm/amdgpu component of the Linux kernel. The amdgpuacpivfctbios function fails to release a reference to the VFCT ACPI table after fetching it. This oversight leads to a resource leak, where memory allocated for the table mapping is not properly freed, potentially impacti...

CVE-2026-68103

A flaw was found in the drm/amdgpu component of the Linux kernel. A local attacker could exploit a vulnerability where creating a user-queue with specific parameters overwrites an existing doorbell mapping. This could lead to misrouting of interrupt requests IRQs and incorrect cleanup processes,...

CVE-2026-68245

A flaw was found in the drm/amdgpu component of the Linux kernel. A use-after-unlock vulnerability exists where a virtual machine VM pointer is dereferenced after its protective lock has been released. This allows the pointer to be modified, potentially leading to memory corruption. An attacker...

AZL-94875 CVE-2026-68273 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix context pstate override handling There are several problems in the context pstate handling code. The most serious ones are potential use-after-free and NULL pointer dereferences at context initialization time. Bot...

CVE-2026-68273

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix context pstate override handling There are several problems in the context pstate handling code. The most serious ones are potential use-after-free and NULL pointer dereferences at context initialization time. Bot...

CVE-2026-68110

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/sdma4.4.2: replace BUGON with WARNON There's no need to crash the kernel for these cases. cherry picked from commit fa4f86a148271e325e95287630a3a15a9cd35fdc...

CVE-2026-68111

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx9: replace BUGON with WARNON There's no need to crash the kernel for these cases. cherry picked from commit b71604f8685b0eba07866f4e8dc30f93e1931054...

CVE-2026-68106

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix division by zero with invalid uvd dimensions When width or height is less than 16, widthinmb or heightinmb becomes 0, leading to fsinmb being 0. This causes a division by zero when calculating numdpbbuffer in H264...

CVE-2026-68273 drm/amdgpu: Fix context pstate override handling

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix context pstate override handling There are several problems in the context pstate handling code. The most serious ones are potential use-after-free and NULL pointer dereferences at context initialization time. Bot...

CVE-2026-68252

The CVE affects the Linux kernel’s DRM AMDGPU SDMA7.0 code path, where the vulnerable usage was a BUG_ON() that could crash the kernel. It has been fixed by replacing BUG_ON() with WARN_ON(), indicating that such checks should warn rather than crash. Affected component: drm/amdgpu/sdma7.0. Root c...

CVE-2026-68245 drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix lifetime issue of amdgpuvmgettaskinfopasid The vm pointer returned from amdgpuvmgetvmfrompasid is only valid while the lock is still being held. Once xaunlockirqrestore is called and returned, the pointer is no...