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CVE-2024-26892— wifi: mt76: mt7921e: fix use-after-free in free_irq()

AI Predicted 6.7 Difficulty: Moderate EPSS 0.23% · P14

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 14

VendorProductVersion RangeStatus
LinuxLinux9270270d62191b7549296721e8d5f3dc0df01563< c7dd42fbebcfb02bef070fd48f774d6412d0b49daffected
9270270d62191b7549296721e8d5f3dc0df01563< bfe1adf1606f76c180324e53b130f0e76d5cc6c3affected
9270270d62191b7549296721e8d5f3dc0df01563< bfeaef901194c5923ce3330272786eff2fac513aaffected
9270270d62191b7549296721e8d5f3dc0df01563< c957280ef6ab6bdf559a91ae693a6b34310697e3affected
a76eaaaafd8b408238d7865bbbbd311f08988f3daffected
95e41ac30a0d0b3637f0b3c93235a7a107a2fb7faffected
6.2.15< 6.3affected
6.3.2< 6.4affected
… +6 more rows
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 9270270d62191b7549296721e8d5f3dc0df01563 ~ c7dd42fbebcfb02bef070fd48f774d6412d0b49d -
LinuxLinux 6.4 -

II. Public POCs for CVE-2024-26892

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III. Intelligence Information for CVE-2024-26892

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Other References for CVE-2024-26892 (4)

Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total

CVE-2024-268779.8 CRITICALcrypto: xilinx - call finalize with bh disabled
CVE-2024-268539.8 CRITICALigc: avoid returning frame twice in XDP_REDIRECT
CVE-2024-268289.4 CRITICALcifs: fix underflow in parse_server_interfaces()
CVE-2024-268568.8 HIGHnet: sparx5: Fix use after free inside sparx5_del_mact_entry
CVE-2024-268228.7 HIGHsmb: client: set correct id, uid and cruid for multiuser automounts
CVE-2024-268308.4 HIGHi40e: Do not allow untrusted VF to remove administratively set MAC
CVE-2024-269147.8 HIGHdrm/amd/display: fix incorrect mpc_combine array size
CVE-2024-268987.8 HIGHaoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
CVE-2024-268527.8 HIGHnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()
CVE-2024-268957.8 HIGHwifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces
CVE-2024-268907.8 HIGHBluetooth: btrtl: fix out of bounds memory access
CVE-2024-268647.8 HIGHtcp: Fix refcnt handling in __inet_hash_connect().
CVE-2024-268657.8 HIGHrds: tcp: Fix use-after-free of net in reqsk_timer_handler().
CVE-2024-268697.8 HIGHf2fs: fix to truncate meta inode pages forcely
CVE-2024-268707.8 HIGHNFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
CVE-2024-268857.8 HIGHbpf: Fix DEVMAP_HASH overflow check on 32-bit arches
CVE-2024-268727.8 HIGHRDMA/srpt: Do not register event handler until srpt device is fully setup
CVE-2024-268847.8 HIGHbpf: Fix hashtab overflow check on 32-bit arches
CVE-2024-268837.8 HIGHbpf: Fix stackmap overflow check on 32-bit arches
CVE-2024-268807.8 HIGHdm: call the resume method on internal suspend

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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