Описание
Security update for the Linux Kernel (Live Patch 11 for SLE 15 SP2)
This update for the Linux Kernel 5.3.18-24_52 fixes several issues.
The following security issues were fixed:
- CVE-2021-38160: Fixed a bug that could lead to a data corruption or loss. This can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190118)
- CVE-2021-3640: Fixed a user-after-free bug in the function sco_sock_sendmsg which could lead to local privilege escalation. (bsc#1188613)
- CVE-2021-3573: Fixed a user-after-free bug in the function hci_sock_bound_ioctl which could lead to local privilege escalation. (bsc#1187054).
Список пакетов
SUSE Linux Enterprise Live Patching 12 SP4
SUSE Linux Enterprise Live Patching 12 SP5
SUSE Linux Enterprise Live Patching 15 SP1
SUSE Linux Enterprise Live Patching 15 SP2
Ссылки
- Link for SUSE-SU-2021:3443-1
- E-Mail link for SUSE-SU-2021:3443-1
- SUSE Security Ratings
- SUSE Bug 1187054
- SUSE Bug 1188613
- SUSE Bug 1190118
- SUSE CVE CVE-2021-3573 page
- SUSE CVE CVE-2021-3640 page
- SUSE CVE CVE-2021-38160 page
Описание
A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.
Затронутые продукты
Ссылки
- CVE-2021-3573
- SUSE Bug 1186666
- SUSE Bug 1187054
- SUSE Bug 1188172
Описание
A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.
Затронутые продукты
Ссылки
- CVE-2021-3640
- SUSE Bug 1188172
- SUSE Bug 1188613
- SUSE Bug 1191530
- SUSE Bug 1196810
- SUSE Bug 1196914
Описание
** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE: the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior.
Затронутые продукты
Ссылки
- CVE-2021-38160
- SUSE Bug 1190117
- SUSE Bug 1190118
- SUSE Bug 1196914