Summary
Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii
Oleksenko discovered that some AMD processors could leak stale data from
division operations in certain situations. A local attacker could possibly
use this to expose sensitive information. (CVE-2023-20588)
It was discovered that the bluetooth subsystem in the Linux kernel did not
properly handle L2CAP socket release, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-40283)
It was discovered that some network classifier implementations in the Linux
kernel contained use-after-free vulnerabilities. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2023-4128)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | linux-bluefield | 5.4.0-1071.77 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-raspi | 5.4.0-1094.105 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-raspi-5.4 | 5.4.0-1094.105~18.04.1 |
Vulnerabilities 3
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High 7.8
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is…
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Unscored —CVE-2023-20588 EPSS 11%
Speculative Leaks
A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.
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Unscored —
** REJECT ** DO NOT USE THIS CVE RECORD. ConsultIDs: CVE-2023-4206, CVE-2023-4207, CVE-2023-4208. Reason: This record i…