All errata/p8/ALT-PU-2021-1033-1
ALT-PU-2021-1033-1

Package update kernel-image-un-def in branch p8

Version4.19.164-alt0.M80P.1
Task#264216
Published2021-01-13
Max severityHIGH
Severity:

Closed issues (15)

BDU:2020-00347
HIGH8.2

Уязвимость функции debugfs_remove ядра операционной системы Linux, связанная с использованием области памяти после её освобождения, позволяющая нарушителю получить доступ к конфиденциальным данным, а также вызвать отказ в обслуживании

Published: 2020-01-29Modified: 2025-01-29
CVSS 3.xHIGH 8.2
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS 2.0HIGH 8.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:C
References
BDU:2020-05454
HIGH7.8

Уязвимость функции sunkbd_reinit() (drivers/input/keyboard/sunkbd.c) ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2020-12-01Modified: 2024-09-13
CVSS 3.xHIGH 7.8
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:L/AC:L/Au:S/C:C/I:C/A:C
References
BDU:2020-05831
MEDIUM4.1

Уязвимость ядра операционной системы Linux, связанная с использованием памяти после её освобождения, позволяющая нарушителю раскрыть защищаемую информацию

Published: 2020-12-24Modified: 2025-08-19
CVSS 3.xMEDIUM 4.1
CVSS:3.x/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0LOW 1.9
CVSS:2.0/AV:L/AC:M/Au:N/C:P/I:N/A:N
References
BDU:2021-00005
HIGH7.8

Уязвимость компонента drivers/tty/tty_jobctrl.c ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Published: 2021-01-13Modified: 2024-05-30
CVSS 3.xHIGH 7.8
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:L/AC:L/Au:S/C:C/I:C/A:C
References
BDU:2021-00014
HIGH8.8

Уязвимость ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии или получить несанкционированный доступ к защищаемой информации

Published: 2021-01-13Modified: 2025-01-29
CVSS 3.xHIGH 8.8
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:L/AC:L/Au:S/C:C/I:C/A:C
References
BDU:2021-03412
MEDIUM4.7

Уязвимость ядра операционной системы Linux, связанная с раскрытием информации, позволяющая нарушителю получить доступ к конфиденциальным данным

Published: 2021-07-06Modified: 2025-01-29
CVSS 3.xMEDIUM 4.7
CVSS:3.x/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0LOW 1.9
CVSS:2.0/AV:L/AC:M/Au:N/C:P/I:N/A:N
References
BDU:2022-05179
HIGH7.8

Уязвимость функции btrfs_queue_work ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Published: 2022-08-22Modified: 2026-01-20
CVSS 3.xHIGH 7.8
CVSS:3.x/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
References
CVE-2019-19377
HIGH7.8

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.

Published: 2019-11-29Modified: 2024-11-21
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS 3.xHIGH 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
CVE-2019-19770
HIGH8.2

In the Linux kernel 4.19.83, there is a use-after-free (read) in the debugfs_remove function in fs/debugfs/inode.c (which is used to remove a file or directory in debugfs that was previously created with a call to another debugfs function such as debugfs_create_file). NOTE: Linux kernel developers dispute this issue as not being an issue with debugfs, instead this is an issue with misuse of debugfs within blktrace

Published: 2019-12-12Modified: 2024-11-21
CVSS 2.0MEDIUM 6.4
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:P
CVSS 3.xHIGH 8.2
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
References
CVE-2020-25656
MEDIUM4.1

A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.

Published: 2020-12-02Modified: 2024-11-21
CVSS 2.0LOW 1.9
CVSS:2.0/AV:L/AC:M/Au:N/C:P/I:N/A:N
CVSS 3.xMEDIUM 4.1
CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
References
CVE-2020-25669
HIGH7.8

A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.

Published: 2021-05-26Modified: 2024-11-21
CVSS 2.0HIGH 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS 3.xHIGH 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
CVE-2020-27784
MEDIUM5.5

A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().

Published: 2022-09-01Modified: 2024-11-21
CVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
CVE-2020-29569
HIGH8.8

An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback.

Published: 2020-12-15Modified: 2024-11-21
CVSS 2.0HIGH 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS 3.xHIGH 8.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
CVE-2020-29661
HIGH7.8

A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.

Published: 2020-12-09Modified: 2024-11-21
CVSS 2.0HIGH 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS 3.xHIGH 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
CVE-2020-4788
MEDIUM4.7

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.

Published: 2020-11-20Modified: 2024-11-21
CVSS 2.0LOW 1.9
CVSS:2.0/AV:L/AC:M/Au:N/C:P/I:N/A:N
CVSS 3.xMEDIUM 4.7
CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References