CVE-2024-56669— iommu/vt-d: Remove cache tags before disabling ATS
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I. Basic Information for CVE-2024-56669
Vulnerability Information
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Vulnerability Title
iommu/vt-d: Remove cache tags before disabling ATS
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Remove cache tags before disabling ATS The current implementation removes cache tags after disabling ATS, leading to potential memory leaks and kernel crashes. Specifically, CACHE_TAG_DEVTLB type cache tags may still remain in the list even after the domain is freed, causing a use-after-free condition. This issue really shows up when multiple VFs from different PFs passed through to a single user-space process via vfio-pci. In such cases, the kernel may crash with kernel messages like: BUG: kernel NULL pointer dereference, address: 0000000000000014 PGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 74 UID: 0 PID: 3183 Comm: testCli Not tainted 6.11.9 #2 RIP: 0010:cache_tag_flush_range+0x9b/0x250 Call Trace: <TASK> ? __die+0x1f/0x60 ? page_fault_oops+0x163/0x590 ? exc_page_fault+0x72/0x190 ? asm_exc_page_fault+0x22/0x30 ? cache_tag_flush_range+0x9b/0x250 ? cache_tag_flush_range+0x5d/0x250 intel_iommu_tlb_sync+0x29/0x40 intel_iommu_unmap_pages+0xfe/0x160 __iommu_unmap+0xd8/0x1a0 vfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1] vfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1] vfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1] Move cache_tag_unassign_domain() before iommu_disable_pci_caps() to fix it.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于Bluetooth:device_for_each_child函数中的释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-56669
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Same Patch Batch · Linux · 2024-12-27 · 221 CVEs total
| CVE-2024-56606 | af_packet: avoid erroring out after sock_init_data() in packet_create() | |
| CVE-2024-56592 | bpf: Call free_htab_elem() after htab_unlock_bucket() | |
| CVE-2024-56594 | drm/amdgpu: set the right AMDGPU sg segment limitation | |
| CVE-2024-56595 | jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree | |
| CVE-2024-56596 | jfs: fix array-index-out-of-bounds in jfs_readdir | |
| CVE-2024-56597 | jfs: fix shift-out-of-bounds in dbSplit | |
| CVE-2024-56598 | jfs: array-index-out-of-bounds fix in dtReadFirst | |
| CVE-2024-56599 | wifi: ath10k: avoid NULL pointer error during sdio remove | |
| CVE-2024-56601 | net: inet: do not leave a dangling sk pointer in inet_create() | |
| CVE-2024-56600 | net: inet6: do not leave a dangling sk pointer in inet6_create() | |
| CVE-2024-56602 | net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() | |
| CVE-2024-56603 | net: af_can: do not leave a dangling sk pointer in can_create() | |
| CVE-2024-56604 | Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc() | |
| CVE-2024-56605 | Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create() | |
| CVE-2024-56617 | cacheinfo: Allocate memory during CPU hotplug if not done from the primary CPU | |
| CVE-2024-56614 | xsk: fix OOB map writes when deleting elements | |
| CVE-2024-56615 | bpf: fix OOB devmap writes when deleting elements | |
| CVE-2024-56616 | drm/dp_mst: Fix MST sideband message body length check | |
| CVE-2024-56613 | sched/numa: fix memory leak due to the overwritten vma->numab_state | |
| CVE-2024-56618 | pmdomain: imx: gpcv2: Adjust delay after power up handshake |
Showing top 20 of 221 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-56669
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