Medium severity · published Nov 9, 2022
CVE-2022-23824
IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure
5.5
CVSS
0.6%
EPSS
No
On KEV
Description
IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
A10-9600p Firmware · Amd
All versions, or not specified · source: NVD
AF
A10-9630p Firmware · Amd
All versions, or not specified · source: NVD
AF
A12-9700p Firmware · Amd
All versions, or not specified · source: NVD
AF
A12-9730p Firmware · Amd
All versions, or not specified · source: NVD
AF
A4-9120 Firmware · Amd
All versions, or not specified · source: NVD
AF
A6-9210 Firmware · Amd
All versions, or not specified · source: NVD
AF
A6-9220 Firmware · Amd
All versions, or not specified · source: NVD
AF
A6-9220c Firmware · Amd
All versions, or not specified · source: NVD
AF
A9-9410 Firmware · Amd
All versions, or not specified · source: NVD
AF
A9-9420 Firmware · Amd
All versions, or not specified · source: NVD
AX
Athlon X4 750 Firmware · Amd
All versions, or not specified · source: NVD
AX
Athlon X4 760k Firmware · Amd
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-23824
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-23824
Mailing List
http://www.openwall.com/lists/oss-security/2022/11/10/2
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NTQMPJC5N6XJYQ232OZFLK47HVZNRBY3/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
security.gentoo.org
https://security.gentoo.org/glsa/202402-07
Mitigation
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1040
www.debian.org
https://www.debian.org/security/2023/dsa-5378
More from A10-9600p Firmware
6.5
CVE-2022-23825
Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure
6.5
CVE-2022-29900
Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions
6.5
CVE-2022-23823
A potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute a timing attack to potentially enable information…
6.5
CVE-2021-26341
Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage
5.6
CVE-2021-26401
LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs