漏洞信息
# MT7921 驱动返回错误代码修复漏洞
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漏洞标题
wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read
漏洞描述信息
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read
Kernel NULL pointer dereference when ACPI SAR table isn't implemented well.
Fix the error code of return to mark the ACPI SAR table as invalid.
[ 5.077128] mt7921e 0000:06:00.0: sar cnt = 0
[ 5.077381] BUG: kernel NULL pointer dereference, address:
0000000000000004
[ 5.077630] #PF: supervisor read access in kernel mode
[ 5.077883] #PF: error_code(0x0000) - not-present page
[ 5.078138] PGD 0 P4D 0
[ 5.078398] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 5.079202] RIP: 0010:mt7921_init_acpi_sar+0x106/0x220
[mt7921_common]
...
[ 5.080786] Call Trace:
[ 5.080786] <TASK>
[ 5.080786] mt7921_register_device+0x37d/0x490 [mt7921_common]
[ 5.080786] mt7921_pci_probe.part.0+0x2ee/0x310 [mt7921e]
[ 5.080786] mt7921_pci_probe+0x52/0x70 [mt7921e]
[ 5.080786] local_pci_probe+0x47/0x90
[ 5.080786] pci_call_probe+0x55/0x190
[ 5.080786] pci_device_probe+0x84/0x120
CVSS信息
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漏洞类别
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漏洞标题
Linux kernel 安全漏洞
漏洞描述信息
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ACPI SAR表未正确实现时返回错误代码不当,可能导致空指针取消引用。
CVSS信息
N/A
漏洞类别
其他