Recently modified vulnerabilities for "canonical ubuntu linux" 24.04 - SecAlerts

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Microsoft Azure Arc Resource BridgeOpenSSH regreSSHion Attack (CVE-2024-6387)

Risk 92

Severity

8.1

EPSS

71.47%

Race Condition, Input Validation, Integer Overflow, Buffer Overflow

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.

1 / 36

Source: Ubuntu

First published (updated )

F5 BIG-IP NextPre-authentication Denial of Service attack in OpenSSH - CVE-2025-26466

Risk 65

Severity

7.5

EPSS

23.44%

Input Validation, Double Free, Use After Free

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

1 / 36

Source: Ubuntu

First published (updated )

Linux Linux kernelLinux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Risk 81

Severity

7.8

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

crypto: algifaead - Revert to operating out-of-place

1 / 6

Source: Microsoft

First published (updated )

Sudo SudoSudo Inclusion of Functionality from Untrusted Control Sphere Vulnerability

Risk 93

Severity

9.3

AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

An attacker can leverage sudo's -R (--chroot) option to run arbitrary commands as root, even if they are not listed in the sudoers file. Sudo versions 1.9.14 to 1.9.17 inclusive are affected.

1 / 4

Source: Red Hat

First published (updated )

Canonical Ubuntu LinuxLast updated 30 June 2026

Risk 41

Severity

6.9

EPSS

0.03%

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Last updated 30 June 2026

1 / 2

Source: Ubuntu

First published (updated )

debian/linuxInvalid pointer deallocation in Ubuntu Linux AppArmor notification handling

Risk 41

Severity

6.1

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Canonical Ubuntu LinuxDeadlock or kernel panic in Ubuntu Linux AppArmor notification handling

Risk 32

Severity

5.5

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Ubuntu Ubuntu LinuxIncorrect validation of field size in Ubuntu Linux AppArmor notification responses

Risk 18

Severity

3.3

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Ubuntu Ubuntu LinuxUse-after-free in Ubuntu Linux AppArmor notification handling

Risk 69

Severity

7.8

Use After Free, Race Condition

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Ubuntu apparmorOut-of-bounds read in Ubuntu Linux AppArmor notification handling

Risk 32

Severity

5.5

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Canonical Ubuntu LinuxUse of uninitialized value in Ubuntu Linux AppArmor notification handling

Risk 18

Severity

3.3

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Canonical ApparmorOut-of-bounds read in Ubuntu Linux AppArmor notification handling

Risk 69

Severity

7.8

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Ubuntu Linux kernelMemory leak in Ubuntu Linux AppArmor large notification response allocation

Risk 32

Severity

5.5

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Canonical Ubuntu LinuxNULL pointer dereference in Ubuntu Linux AppArmor notification handling

Risk 18

Severity

3.3

Null Pointer Dereference

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Last updated 5 June 2026

1 / 2

Source: Ubuntu

First published (updated )

Ubuntu UbuntuLocal Privilege Escalation in snapd

Risk 54

Severity

7.8

EPSS

0.01%

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Last updated 25 March 2026

1 / 3

Source: Ubuntu

First published (updated )

Canonical apportRace Condition in Canonical Apport

Risk 22

Severity

4.7

EPSS

0.01%

Race Condition

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Last updated 26 August 2025

1 / 4

Source: Ubuntu

First published (updated )

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