Errata ALT-PU-2021-2221-1: Information
Package name: kernel-image-std-def
Version: 5.10.47-alt0.c9f
Bulletin updated: July 13, 2021
Task: #276518
Fixes
Published: Oct. 1, 2020
BDU:2021-00284
Уязвимость ядра операционной системы Linux, связанная с некорректной проверкой криптографической подписи, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации
Severity: MEDIUM (6.5) Vector: AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Links:
Published: June 22, 2021
BDU:2021-03938
Уязвимость компонента kernel/module.c ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации
Severity: HIGH (7.8) Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Links:
Published: May 26, 2021
BDU:2021-04854
Уязвимость операционной системы Linux вызвана переполнением буфера, позволяющая нарушителю выполнить произвольную команду управления
Severity: HIGH (7.8) Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Links:
Published: Oct. 2, 2020
Modified: Oct. 5, 2020
Modified: Oct. 5, 2020
CVE-2020-26541
The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.
Severity: MEDIUM (6.5) Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Links:
Published: May 26, 2021
Modified: May 29, 2024
Modified: May 29, 2024
CVE-2021-22543
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
Severity: HIGH (7.8) Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Links:
- https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584
- [oss-security] 20210626 Re: CVE-2021-22543 - /dev/kvm LPE
- https://security.netapp.com/advisory/ntap-20210708-0002/
- [debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update
- [debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security update
- FEDORA-2021-fe826f202e
- FEDORA-2021-95f2f1cfc7
Published: July 7, 2021
Modified: May 16, 2023
Modified: May 16, 2023
CVE-2021-35039
kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument.
Severity: HIGH (7.8) Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Links:
- https://www.openwall.com/lists/oss-security/2021/07/06/3
- https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14
- [oss-security] 20210706 CVE-2021-35039: Linux kernel loading unsigned kernel modules via init_module syscall
- https://security.netapp.com/advisory/ntap-20210813-0004/
- [debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75