[Samsung Galaxy Note 20 Ultra ROMs, Kernels, Recove] giostark:
For the ones that would know what those security issues are, here the list:

Samsung Mobile Security

security.samsungmobile.com

Samsung Mobile is releasing a maintenance release for major flagship models as part of monthly Security Maintenance Release (SMR) process. This SMR package includes patches from Google and Samsung.

Google patches include patches up to Android Security Bulletin – January 2022 package. The Bulletin (January 2022) contains the following CVE items:

Critical
CVE-2021-30275, CVE-2021-30276

High
CVE-2021-30270, CVE-2021-30279, CVE-2021-30278, CVE-2021-30269, CVE-2021-30283, CVE-2021-1918, CVE-2021-30274, CVE-2021-30272, CVE-2021-30282, CVE-2021-30271, CVE-2021-1894, CVE-2020-11263, CVE-2021-33909, CVE-2021-30337, CVE-2021-30335, CVE-2021-30262, CVE-2021-30267, CVE-2021-30293, CVE-2021-30273, CVE-2021-30289, CVE-2021-30268, CVE-2021-30336, CVE-2021-30303, CVE-2020-0368, CVE-2021-0971, CVE-2021-39630, CVE-2021-39632, CVE-2020-0338, CVE-2021-39623, CVE-2021-39620, CVE-2021-39626, CVE-2021-39629, CVE-2021-0643, CVE-2021-39628, CVE-2021-39659

Moderate
CVE-2021-0961, CVE-2021-0661, CVE-2021-0662, CVE-2021-0663, CVE-2021-0673

Already included in previous updates
: None

Not applicable to Samsung devices
CVE-2021-30351, CVE-2021-0675, CVE-2021-0904, CVE-2021-38204, CVE-2021-39618, CVE-2021-39621, CVE-2021-39622, CVE-2021-39625, CVE-2021-39627

※ Please see Android Security Bulletin for detailed information on Google patches.

Along with Google patches, Samsung Mobile provides 19 Samsung Vulnerabilities and Exposures (SVE) items described below, in order to improve our customer’s confidence on security of Samsung Mobile devices. Samsung security index (SSI), found in “Security software version”, SMR January-2022 Release 1 includes all patches from Samsung and Google. Some of the SVE items may not be included in this package, in case these items were already included in a previous maintenance release.

SVE-2021-23353 (CVE-2022-22263): Arbitrary activity start in SecSettings

Severity: Moderate
Affected versions: Select R(11.0) devices
Reported on: September 24, 2021
Disclosure status: Privately disclosed.
Unprotected dynamic receiver in SecSettings prior to SMR Jan-2022 Release 1 allows untrusted applications to launch arbitrary activity.
The patch adds a proper permission for dynamic receiver.

SVE-2021-23054 (CVE-2022-22264): Arbitrary file access vulnerability in Dressroom

Severity: High
Affected versions: Q(10.0), R(11.0), S(12.0)
Reported on: August 25, 2021
Disclosure status: Privately disclosed.
Improper sanitization of incoming intent in Dressroom prior to SMR Jan-2022 Release 1 allows local attackers to read and write arbitrary files without permission.
The patch sanitizes incoming Intent before using it.

SVE-2021-23365 (CVE-2022-22265): Use-After-Free bug in NPU driver

Severity: Moderate
Affected versions: P(9.0), Q(10.0), R(11.0), S(12.0) devices with selected Exynos chipsets
Reported on: September 25, 2021
Disclosure status: Privately disclosed.
An improper check or handling of exceptional conditions in NPU driver prior to SMR Jan-2022 Release 1 allows arbitrary memory write and code execution.
The patch adds proper check of exceptional conditions logic to prevent Use-After-Free.

SVE-2021-23023 (CVE-2022-22266): Wifi scan result leak via the exported TencentWifiSecurity service

Severity: Moderate
Affected versions: P(9.0), Q(10.0), R(11.0)
Reported on: August 20, 2021
Disclosure status: Privately disclosed.
(Applicable to China models only) Unprotected WifiEvaluationService in TencentWifiSecurity application prior to SMR Jan-2022 Release 1 allows untrusted applications to get WiFi information without proper permission.
The patch adds proper protection to prevent unintended access by other applications.

SVE-2021-23088 (CVE-2022-22267): Implicit Intent hijacking in ActivityMetricsLogger

Severity: Moderate
Affected versions: P(9.0), Q(10.0), R(11.0), S(12.0)
Reported on: August 29, 2021
Disclosure status: Privately disclosed.
Implicit Intent hijacking vulnerability in ActivityMetricsLogger prior to SMR Jan-2022 Release 1 allows attackers to get running application information.
The patch changes implicit Intent to explicit Intent to prevent unprivileged access to running application information.

SVE-2021-23254 (CVE-2022-22268): Temporary bypass of Knox Guard via Samsung DeX

Severity: High
Affected versions: P(9.0), Q(10.0), R(11.0), S(12.0)
Reported on: September 14, 2021
Disclosure status: Privately disclosed.
Incorrect implementation of Knox Guard prior to SMR Jan-2022 Release 1 allows physically proximate attackers to temporary unlock the Knox Guard via Samsung DeX mode.
The patch blocks Samsung DeX mode when KnoxGuard locked.

SVE-2021-23364 (CVE-2022-22269): Local Bluetooth MAC address leak

Severity: Moderate
Affected versions: P(9.0), Q(10.0), R(11.0)
Reported on: September 25, 2021
Disclosure status: Privately disclosed.
Keeping sensitive data in unprotected BluetoothSettingsProvider prior to SMR Jan-2022 Release 1 allows untrusted applications to get a local Bluetooth MAC address.
The patch removes a local Bluetooth MAC address from the unprotected provider.

SVE-2021-23422 (CVE-2022-22270): Contacts information leak via hijacking implicit intent

Severity: Moderate
Affected versions: P(9.0), Q(10.0), R(11.0)
Reported on: September 30, 2021
Disclosure status: Privately disclosed.
An implicit Intent hijacking vulnerability in Dialer prior to SMR Jan-2022 Release 1 allows unprivileged applications to access contact information.
The patch changes implicit Intent to explicit Intent to prevent unprivileged access to contact.

SVE-2021-23664 (CVE-2022-22271): Arbitrary pointer dereference in TIMA TA

Severity: High
Affected versions: P(9.0), Q(10.0), R(11.0)
Reported on: October 21, 2021
Disclosure status: Privately disclosed.
A missing input validation before memory copy in TIMA trustlet prior to SMR Jan-2022 Release 1 allows attackers to copy data from arbitrary memory.
The patch adds proper input check not to allow arbitrary memory access.

SVE-2021-23486 (CVE-2022-22272): Improper authorization in TelephonyManager

Severity: Moderate
Affected versions: Q(10.0), R(11.0), S(12.0)
Reported on: October 6, 2021
Disclosure status: Privately disclosed.
Improper authorization in TelephonyManager prior to SMR Jan-2022 Release 1 allows attackers to get IMSI without READ_PRIVILEGED_PERMISSION
The patch modified with proper permission.

Some SVE items included in the Samsung Android Security Update cannot be disclosed at this time.