Red Hat Security Advisory: kernel security update

Moderate

A vulnerability was found in the Linux kernel whereby hardware registries that have the server TID base may contain invalid values when the adapter is in a bad state. Reading these invalid values can result in out-of-bounds memory access, which can cause memory corruption or crashes.

CWE-125 - Out-of-bounds Read

A vulnerability was found in the Linux kernel's nvme-rdma driver where the driver failed to destroy a component cm_id before another component qp was destroyed. This issue occurs when the kernel incorrectly manages memory during RDMA, leading to a potential use-after-free.

CWE-416 - Use After Free

A possible race condition flaw was found in the Linux kernel. When a process exits, its virtual memory areas (VMAs) are removed by exit_mmap(), and at the same time, userfaultfd_writeprotect() is called.

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

In the Linux kernel, the following vulnerability has been resolved: mm/slub: fix to return errno if kmalloc() fails In create_unique_id(), kmalloc(, GFP_KERNEL) can fail due to out-of-memory, if it fails, return errno correctly rather than triggering panic via BUG_ON(); kernel BUG at mm/slub.c:5893! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Call trace: sysfs_slab_add+0x258/0x260 mm/slub.c:5973 __kmem_cache_create+0x60/0x118 mm/slub.c:4899 create_cache mm/slab_common.c:229 [inline] kmem_cache_create_usercopy+0x19c/0x31c mm/slab_common.c:335 kmem_cache_create+0x1c/0x28 mm/slab_common.c:390 f2fs_kmem_cache_create fs/f2fs/f2fs.h:2766 [inline] f2fs_init_xattr_caches+0x78/0xb4 fs/f2fs/xattr.c:808 f2fs_fill_super+0x1050/0x1e0c fs/f2fs/super.c:4149 mount_bdev+0x1b8/0x210 fs/super.c:1400 f2fs_mount+0x44/0x58 fs/f2fs/super.c:4512 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1530 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x914 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2f8/0x408 fs/namespace.c:3568

CWE-617 - Reachable Assertion

A vulnerability was found in the Linux kernel's IOMMU driver, where the dev_iommu_free function can lead to a use-after-free error. This occurs when a device probe fails while simultaneously accessing dev->iommu->fwspec in the of_iommu_configure path. As a result, this vulnerability can potentially cause system instability or crashes.

CWE-416 - Use After Free