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Ubuntu.comUB:CVE-2022-2905HistorySep 09, 2022 - 12:00 a.m.
CVE-2022-2905
2022-09-0900:00:00
ubuntu.com
ubuntu.com
31
linux kernel
bpf subsystem
unauthorized access
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
5.1%
An out-of-bounds memory read flaw was found in the Linux kernel’s BPF
subsystem in how a user calls the bpf_tail_call function with a key larger
than the max_entries of the map. This flaw allows a local user to gain
unauthorized access to data.
Notes
| Author | Note |
|---|---|
| sbeattie | unprivileged BPF is disabled by default in Ubuntu kernels; thus administrative privileges are required to exploit this unless a non-default configuration is used where the kernel.unprivileged_bpf_disabled sysctl has been set to 0. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 22.04 | noarch | linux | < 5.15.0-53.59 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1023.27 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1023.27~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure | < 5.15.0-1023.29 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure-5.15 | < 5.15.0-1023.29~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure-fde | < 5.15.0-1024.30.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure-fde-5.15 | < 5.15.0-1029.36~20.04.1.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-gcp | < 5.15.0-1022.29 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gcp-5.15 | < 5.15.0-1022.29~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-gke | < 5.15.0-1020.25 | UNKNOWN |
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5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
5.1%
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