CVE-2024-41096— PCI/MSI: Fix UAF in msi_capability_init
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I. Basic Information for CVE-2024-41096
Vulnerability Information
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Vulnerability Title
PCI/MSI: Fix UAF in msi_capability_init
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: PCI/MSI: Fix UAF in msi_capability_init KFENCE reports the following UAF: BUG: KFENCE: use-after-free read in __pci_enable_msi_range+0x2c0/0x488 Use-after-free read at 0x0000000024629571 (in kfence-#12): __pci_enable_msi_range+0x2c0/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 kfence-#12: 0x0000000008614900-0x00000000e06c228d, size=104, cache=kmalloc-128 allocated by task 81 on cpu 7 at 10.808142s: __kmem_cache_alloc_node+0x1f0/0x2bc kmalloc_trace+0x44/0x138 msi_alloc_desc+0x3c/0x9c msi_domain_insert_msi_desc+0x30/0x78 msi_setup_msi_desc+0x13c/0x184 __pci_enable_msi_range+0x258/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 freed by task 81 on cpu 7 at 10.811436s: msi_domain_free_descs+0xd4/0x10c msi_domain_free_locked.part.0+0xc0/0x1d8 msi_domain_alloc_irqs_all_locked+0xb4/0xbc pci_msi_setup_msi_irqs+0x30/0x4c __pci_enable_msi_range+0x2a8/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 Descriptor allocation done in: __pci_enable_msi_range msi_capability_init msi_setup_msi_desc msi_insert_msi_desc msi_domain_insert_msi_desc msi_alloc_desc ... Freed in case of failure in __msi_domain_alloc_locked() __pci_enable_msi_range msi_capability_init pci_msi_setup_msi_irqs msi_domain_alloc_irqs_all_locked msi_domain_alloc_locked __msi_domain_alloc_locked => fails msi_domain_free_locked ... That failure propagates back to pci_msi_setup_msi_irqs() in msi_capability_init() which accesses the descriptor for unmasking in the error exit path. Cure it by copying the descriptor and using the copy for the error exit path unmask operation. [ tglx: Massaged change log ]
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，该漏洞源于在使用KFENCE时，存在释放后重用错误。
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-2024-41096
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Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total
| CVE-2024-41088 | can: mcp251xfd: fix infinite loop when xmit fails | |
| CVE-2024-42068 | bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro() | |
| CVE-2024-42067 | bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro() | |
| CVE-2024-42066 | drm/xe: Fix potential integer overflow in page size calculation | |
| CVE-2024-42065 | drm/xe: Add a NULL check in xe_ttm_stolen_mgr_init | |
| CVE-2024-42063 | bpf: Mark bpf prog stack with kmsan_unposion_memory in interpreter mode | |
| CVE-2024-42064 | drm/amd/display: Skip pipe if the pipe idx not set properly | |
| CVE-2023-52887 | net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_s | |
| CVE-2024-41098 | ata: libata-core: Fix null pointer dereference on error | |
| CVE-2024-41097 | usb: atm: cxacru: fix endpoint checking in cxacru_bind() | |
| CVE-2024-41095 | drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_ld_modes | |
| CVE-2024-41094 | drm/fbdev-dma: Only set smem_start is enable per module option | |
| CVE-2024-41093 | drm/amdgpu: avoid using null object of framebuffer | |
| CVE-2024-41092 | drm/i915/gt: Fix potential UAF by revoke of fence registers | |
| CVE-2024-41089 | drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_hd_modes | |
| CVE-2024-41077 | null_blk: fix validation of block size | |
| CVE-2024-41080 | io_uring: fix possible deadlock in io_register_iowq_max_workers() | |
| CVE-2024-41079 | nvmet: always initialize cqe.result | |
| CVE-2024-41078 | btrfs: qgroup: fix quota root leak after quota disable failure | |
| CVE-2024-41075 | cachefiles: add consistency check for copen/cread |
Showing top 20 of 121 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-2024-41096
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