12.1.0: Difference between revisions

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The Switch 12.1.0 system update was released on July 6, 2021 (UTC). This Switch update was released for the following regions: ALL.

Security flaws fixed: ~~<fill this in manually later, see the updatedetails page from the ninupdates-report page(s) once available for now>~~.

Security flaws fixed: yes.

==Change-log==

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The remaining changes fixed IPC cmd [[Switch_System_Flaws|vulns]].

===[[Internet_Browser|Web-applets]]===

The [[11.0.0|CFI]] code was updated.

The add/sub instruction was replaced with eor. Hence, the additional code at func entry/exit is now identical. The code now does:

* The low 40-bits of x30 are extracted, then multiplied with x18.

* <code>crc32x w17, w16, x17</code> (which uses the above value - x16 was set to sp after the above bitfield-extract)

* x17 is multiplied with x18 again.

* <code>crc32x w17, wzr, x17</code>

* Then lastly the eor instruction is used with x30, with x17 shifted to bit40.

A vuln with RNG was [[Switch_System_Flaws|fixed]].

==See Also==

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 The Switch 12.1.0 system update was released on July 6, 2021 (UTC). This Switch update was released for the following regions: ALL.
-Security flaws fixed: <fill this in manually later, see the updatedetails page from the ninupdates-report page(s) once available for now>.
+Security flaws fixed: yes.
 ==Change-log==
@@ Line 51: / Line 51: @@
 The remaining changes fixed IPC cmd [[Switch_System_Flaws|vulns]].
+===[[Internet_Browser|Web-applets]]===
+The [[11.0.0|CFI]] code was updated.
+The add/sub instruction was replaced with eor. Hence, the additional code at func entry/exit is now identical. The code now does:
+* The low 40-bits of x30 are extracted, then multiplied with x18.
+* <code>crc32x w17, w16, x17</code> (which uses the above value - x16 was set to sp after the above bitfield-extract)
+* x17 is multiplied with x18 again.
+* <code>crc32x w17, wzr, x17</code>
+* Then lastly the eor instruction is used with x30, with x17 shifted to bit40.
+A vuln with RNG was [[Switch_System_Flaws|fixed]].
 ==See Also==