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      <title>CVE-2023-53986 — mips: bmips: BCM6358: disable RAC flush for TP1</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53986</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;mips: bmips: BCM6358: disable RAC flush for TP1&lt;/p&gt;
&lt;p&gt;RAC flush causes kernel panics on BCM6358 with EHCI/OHCI when booting from TP1:
[    3.881739] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    3.895011] Reserved instruction in kernel code[#1]:
[    3.900113] CPU: 0 PID: 1 Comm: init Not tainted 5.10.16 #0
[    3.905829] $ 0   : 00000000 10008700 00000000 77d94060
[    3.911238] $ 4   : 7fd1f088 00000000 81431cac 81431ca0
[    3.916641] $ 8   : 00000000 ffffefff 8075cd34 00000000
[    3.922043] $12   : 806f8d40 f3e812b7 00000000 000d9aaa
[    3.927446] $16   : 7fd1f068 7fd1f080 7ff559b8 81428470
[    3.932848] $20   : 00000000 00000000 55590000 77d70000
[    3.938251] $24   : 00000018 00000010
[    3.943655] $28   : 81430000 81431e60 81431f28 800157fc
[    3.949058] Hi    : 00000000
[    3.952013] Lo    : 00000000
[    3.955019] epc   : 80015808 setup_sigcontext+0x54/0x24c
[    3.960464] ra    : 800157fc setup_sigcontext+0x48/0x24c
[    3.965913] Status: 10008703	KERNEL EXL IE
[    3.970216] Cause : 00800028 (ExcCode 0a)
[    3.974340] PrId  : 0002a010 (Broadcom BMIPS4350)
[    3.979170] Modules linked in: ohci_platform ohci_hcd fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common
[    3.992907] Process init (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=77e22ec8)
[    4.000776] Stack : 81431ef4 7fd1f080 81431f28 81428470 7fd1f068 81431edc 7ff559…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;mips: bmips: BCM6358: disable RAC flush for TP1&lt;/p&gt;
&lt;p&gt;RAC flush causes kernel panics on BCM6358 with EHCI/OHCI when booting from TP1:
[    3.881739] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    3.895011] Reserved instruction in kernel code[#1]:
[    3.900113] CPU: 0 PID: 1 Comm: init Not tainted 5.10.16 #0
[    3.905829] $ 0   : 00000000 10008700 00000000 77d94060
[    3.911238] $ 4   : 7fd1f088 00000000 81431cac 81431ca0
[    3.916641] $ 8   : 00000000 ffffefff 8075cd34 00000000
[    3.922043] $12   : 806f8d40 f3e812b7 00000000 000d9aaa
[    3.927446] $16   : 7fd1f068 7fd1f080 7ff559b8 81428470
[    3.932848] $20   : 00000000 00000000 55590000 77d70000
[    3.938251] $24   : 00000018 00000010
[    3.943655] $28   : 81430000 81431e60 81431f28 800157fc
[    3.949058] Hi    : 00000000
[    3.952013] Lo    : 00000000
[    3.955019] epc   : 80015808 setup_sigcontext+0x54/0x24c
[    3.960464] ra    : 800157fc setup_sigcontext+0x48/0x24c
[    3.965913] Status: 10008703	KERNEL EXL IE
[    3.970216] Cause : 00800028 (ExcCode 0a)
[    3.974340] PrId  : 0002a010 (Broadcom BMIPS4350)
[    3.979170] Modules linked in: ohci_platform ohci_hcd fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common
[    3.992907] Process init (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=77e22ec8)
[    4.000776] Stack : 81431ef4 7fd1f080 81431f28 81428470 7fd1f068 81431edc 7ff559…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2023-53986</guid>
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