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ubuntucveUbuntu.comUB:CVE-2022-2905
HistorySep 09, 2022 - 12:00 a.m.

CVE-2022-2905

2022-09-0900:00:00
ubuntu.com
ubuntu.com
29

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

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:S/C:P/I:N/A:N

0.0004 Low

EPSS

Percentile

5.3%

JSON

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.
OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchlinux< 5.15.0-53.59UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1023.27UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1023.27~20.04.1UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1023.29UNKNOWN
ubuntu20.04noarchlinux-azure-5.15< 5.15.0-1023.29~20.04.1UNKNOWN
ubuntu22.04noarchlinux-azure-fde< 5.15.0-1023.29UNKNOWN
ubuntu20.04noarchlinux-azure-fde-5.15< 5.15.0-1023.29~20.04.1UNKNOWN
ubuntu22.04noarchlinux-gcp< 5.15.0-1022.29UNKNOWN
ubuntu20.04noarchlinux-gcp-5.15< 5.15.0-1022.29~20.04.1UNKNOWN
ubuntu22.04noarchlinux-gke< 5.15.0-1020.25UNKNOWN
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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

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:S/C:P/I:N/A:N

0.0004 Low

EPSS

Percentile

5.3%

JSON
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