CVE-2024-26892— wifi: mt76: mt7921e: fix use-after-free in free_irq()
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I. Basic Information for CVE-2024-26892
Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7921e: fix use-after-free in free_irq()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921e: fix use-after-free in free_irq() From commit a304e1b82808 ("[PATCH] Debug shared irqs"), there is a test to make sure the shared irq handler should be able to handle the unexpected event after deregistration. For this case, let's apply MT76_REMOVED flag to indicate the device was removed and do not run into the resource access anymore. BUG: KASAN: use-after-free in mt7921_irq_handler+0xd8/0x100 [mt7921e] Read of size 8 at addr ffff88824a7d3b78 by task rmmod/11115 CPU: 28 PID: 11115 Comm: rmmod Tainted: G W L 5.17.0 #10 Hardware name: Micro-Star International Co., Ltd. MS-7D73/MPG B650I EDGE WIFI (MS-7D73), BIOS 1.81 01/05/2024 Call Trace: <TASK> dump_stack_lvl+0x6f/0xa0 print_address_description.constprop.0+0x1f/0x190 ? mt7921_irq_handler+0xd8/0x100 [mt7921e] ? mt7921_irq_handler+0xd8/0x100 [mt7921e] kasan_report.cold+0x7f/0x11b ? mt7921_irq_handler+0xd8/0x100 [mt7921e] mt7921_irq_handler+0xd8/0x100 [mt7921e] free_irq+0x627/0xaa0 devm_free_irq+0x94/0xd0 ? devm_request_any_context_irq+0x160/0x160 ? kobject_put+0x18d/0x4a0 mt7921_pci_remove+0x153/0x190 [mt7921e] pci_device_remove+0xa2/0x1d0 __device_release_driver+0x346/0x6e0 driver_detach+0x1ef/0x2c0 bus_remove_driver+0xe7/0x2d0 ? __check_object_size+0x57/0x310 pci_unregister_driver+0x26/0x250 __do_sys_delete_module+0x307/0x510 ? free_module+0x6a0/0x6a0 ? fpregs_assert_state_consistent+0x4b/0xb0 ? rcu_read_lock_sched_held+0x10/0x70 ? syscall_enter_from_user_mode+0x20/0x70 ? trace_hardirqs_on+0x1c/0x130 do_syscall_64+0x5c/0x80 ? trace_hardirqs_on_prepare+0x72/0x160 ? do_syscall_64+0x68/0x80 ? trace_hardirqs_on_prepare+0x72/0x160 entry_SYSCALL_64_after_hwframe+0x44/0xae
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，该漏洞源于内存释放后重用。
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-2024-26892
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Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total
| CVE-2024-26883 | bpf: Fix stackmap overflow check on 32-bit arches | |
| CVE-2024-26877 | crypto: xilinx - call finalize with bh disabled | |
| CVE-2024-26873 | scsi: hisi_sas: Fix a deadlock issue related to automatic dump | |
| CVE-2024-26872 | RDMA/srpt: Do not register event handler until srpt device is fully setup | |
| CVE-2024-26871 | f2fs: fix NULL pointer dereference in f2fs_submit_page_write() | |
| CVE-2024-26870 | NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 | |
| CVE-2024-26869 | f2fs: fix to truncate meta inode pages forcely | |
| CVE-2024-26874 | drm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip | |
| CVE-2024-26881 | net: hns3: fix kernel crash when 1588 is received on HIP08 devices | |
| CVE-2024-26882 | net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() | |
| CVE-2024-26880 | dm: call the resume method on internal suspend | |
| CVE-2024-26884 | bpf: Fix hashtab overflow check on 32-bit arches | |
| CVE-2024-26885 | bpf: Fix DEVMAP_HASH overflow check on 32-bit arches | |
| CVE-2024-26886 | Bluetooth: af_bluetooth: Fix deadlock | |
| CVE-2024-26887 | Bluetooth: btusb: Fix memory leak | |
| CVE-2024-26888 | Bluetooth: msft: Fix memory leak | |
| CVE-2024-26889 | Bluetooth: hci_core: Fix possible buffer overflow | |
| CVE-2024-26890 | Bluetooth: btrtl: fix out of bounds memory access | |
| CVE-2024-26891 | iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected | |
| CVE-2024-26893 | firmware: arm_scmi: Fix double free in SMC transport cleanup path |
Showing top 20 of 100 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
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