Описание
Security update for the Linux Kernel
The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2023-1872:Fixed a use after free vulnerability in the io_uring subsystem, which could lead to local privilege escalation (bsc#1210414).
- CVE-2022-2196: Fixed a regression related to KVM that allowed for speculative execution attacks (bsc#1206992).
- CVE-2023-1670: Fixed a use after free in the Xircom 16-bit PCMCIA Ethernet driver. A local user could use this flaw to crash the system or potentially escalate their privileges on the system (bsc#1209871).
- CVE-2023-2162: Fixed an use-after-free flaw in iscsi_sw_tcp_session_create (bsc#1210647).
- CVE-2023-2176: A vulnerability was found in compare_netdev_and_ip in drivers/infiniband/core/cma.c in RDMA. The improper cleanup results in out-of-boundary read, where a local user can utilize this problem to crash the system or escalation of privilege (bsc#1210629).
- CVE-2023-1998: Fixed a use after free during login when accessing the shost ipaddress (bsc#1210506).
- CVE-2023-30772: Fixed a race condition and resultant use-after-free in da9150_charger_remove (bsc#1210329).
- CVE-2023-2008: A flaw was found in the fault handler of the udmabuf device driver. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code (bsc#1210453).
- CVE-2023-1855: Fixed a use after free in xgene_hwmon_remove (bsc#1210202).
- CVE-2020-36691: Fixed a denial of service (unbounded recursion) vulnerability via a nested Netlink policy with a back reference (bsc#1209613 bsc#1209777).
- CVE-2023-1990: Fixed a use after free in ndlc_remove (bsc#1210337).
- CVE-2023-1989: Fixed a use after free in btsdio_remove (bsc#1210336).
- CVE-2022-43945: Fixed a buffer overflow in the NFSD implementation (bsc#1205128).
- CVE-2023-1611: Fixed an use-after-free flaw in btrfs_search_slot (bsc#1209687).
- CVE-2023-1838: Fixed an use-after-free flaw in virtio network subcomponent. This flaw could allow a local attacker to crash the system and lead to a kernel information leak problem. (bsc#1210203).
The following non-security bugs were fixed:
- Drivers: vmbus: Check for channel allocation before looking up relids (git-fixes).
- Replace mkinitrd dependency with dracut (bsc#1202353).
- cifs: fix negotiate context parsing (bsc#1210301).
Список пакетов
Image SLES15-SP2-BYOS-Azure
Image SLES15-SP2-HPC-BYOS-Azure
Image SLES15-SP2-SAP-Azure
Image SLES15-SP2-SAP-Azure-LI-BYOS-Production
Image SLES15-SP2-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP2-SAP-BYOS-Azure
Image SLES15-SP2-SAP-BYOS-EC2-HVM
Image SLES15-SP2-SAP-BYOS-GCE
Image SLES15-SP2-SAP-EC2-HVM
Image SLES15-SP2-SAP-GCE
SUSE Enterprise Storage 7
SUSE Linux Enterprise High Availability Extension 15 SP2
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS
SUSE Linux Enterprise Live Patching 15 SP2
SUSE Linux Enterprise Server 15 SP2-LTSS
SUSE Linux Enterprise Server for SAP Applications 15 SP2
Ссылки
- Link for SUSE-SU-2023:2146-1
- E-Mail link for SUSE-SU-2023:2146-1
- SUSE Security Ratings
- SUSE Bug 1202353
- SUSE Bug 1205128
- SUSE Bug 1206992
- SUSE Bug 1209613
- SUSE Bug 1209687
- SUSE Bug 1209777
- SUSE Bug 1209871
- SUSE Bug 1210202
- SUSE Bug 1210203
- SUSE Bug 1210301
- SUSE Bug 1210329
- SUSE Bug 1210336
- SUSE Bug 1210337
- SUSE Bug 1210414
- SUSE Bug 1210417
- SUSE Bug 1210453
- SUSE Bug 1210469
Описание
An issue was discovered in the Linux kernel before 5.8. lib/nlattr.c allows attackers to cause a denial of service (unbounded recursion) via a nested Netlink policy with a back reference.
Затронутые продукты
Ссылки
- CVE-2020-36691
- SUSE Bug 1209613
- SUSE Bug 1209777
Описание
A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past commit 2e7eab81425a
Затронутые продукты
Ссылки
- CVE-2022-2196
- SUSE Bug 1206992
Описание
The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC message with garbage data is still correctly formed according to the specification and is passed forward to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the allocated buffer space. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Затронутые продукты
Ссылки
- CVE-2022-43945
- SUSE Bug 1205128
- SUSE Bug 1205130
- SUSE Bug 1208030
- SUSE Bug 1208085
- SUSE Bug 1209225
- SUSE Bug 1210124
Описание
A use-after-free flaw was found in btrfs_search_slot in fs/btrfs/ctree.c in btrfs in the Linux Kernel.This flaw allows an attacker to crash the system and possibly cause a kernel information lea
Затронутые продукты
Ссылки
- CVE-2023-1611
- SUSE Bug 1209687
Описание
A flaw use after free in the Linux kernel Xircom 16-bit PCMCIA (PC-card) Ethernet driver was found.A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
Затронутые продукты
Ссылки
- CVE-2023-1670
- SUSE Bug 1209871
- SUSE Bug 1222212
Описание
A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.
Затронутые продукты
Ссылки
- CVE-2023-1838
- SUSE Bug 1210203
Описание
A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/xgene-hwmon.c in the Hardware Monitoring Linux Kernel Driver (xgene-hwmon). This flaw could allow a local attacker to crash the system due to a race problem. This vulnerability could even lead to a kernel information leak problem.
Затронутые продукты
Ссылки
- CVE-2023-1855
- SUSE Bug 1210202
Описание
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
Затронутые продукты
Ссылки
- CVE-2023-1872
- SUSE Bug 1210414
- SUSE Bug 1210417
Описание
A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. In this flaw, a call to btsdio_remove with an unfinished job, may cause a race problem leading to a UAF on hdev devices.
Затронутые продукты
Ссылки
- CVE-2023-1989
- SUSE Bug 1210336
- SUSE Bug 1210500
- SUSE Bug 1213841
- SUSE Bug 1213842
- SUSE Bug 1214128
Описание
A use-after-free flaw was found in ndlc_remove in drivers/nfc/st-nci/ndlc.c in the Linux Kernel. This flaw could allow an attacker to crash the system due to a race problem.
Затронутые продукты
Ссылки
- CVE-2023-1990
- SUSE Bug 1210337
- SUSE Bug 1210501
- SUSE Bug 1214128
Описание
The Linux kernel allows userspace processes to enable mitigations by calling prctl with PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to attacks in some cases even after enabling the spectre-BTI mitigation with prctl. The same behavior can be observed on a bare-metal machine when forcing the mitigation to IBRS on boot command line. This happened because when plain IBRS was enabled (not enhanced IBRS), the kernel had some logic that determined that STIBP was not needed. The IBRS bit implicitly protects against cross-thread branch target injection. However, with legacy IBRS, the IBRS bit was cleared on returning to userspace, due to performance reasons, which disabled the implicit STIBP and left userspace threads vulnerable to cross-thread branch target injection against which STIBP protects.
Затронутые продукты
Ссылки
- CVE-2023-1998
- SUSE Bug 1210506
Описание
A flaw was found in the Linux kernel's udmabuf device driver. The specific flaw exists within a fault handler. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an array. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.
Затронутые продукты
Ссылки
- CVE-2023-2008
- SUSE Bug 1210453
Описание
A use-after-free vulnerability was found in iscsi_sw_tcp_session_create in drivers/scsi/iscsi_tcp.c in SCSI sub-component in the Linux Kernel. In this flaw an attacker could leak kernel internal information.
Затронутые продукты
Ссылки
- CVE-2023-2162
- SUSE Bug 1210647
- SUSE Bug 1210662
- SUSE Bug 1213841
- SUSE Bug 1213842
- SUSE Bug 1214128
- SUSE Bug 1222212
Описание
A vulnerability was found in compare_netdev_and_ip in drivers/infiniband/core/cma.c in RDMA in the Linux Kernel. The improper cleanup results in out-of-boundary read, where a local user can utilize this problem to crash the system or escalation of privilege.
Затронутые продукты
Ссылки
- CVE-2023-2176
- SUSE Bug 1210629
- SUSE Bug 1210630
- SUSE Bug 1213842
Описание
The Linux kernel before 6.2.9 has a race condition and resultant use-after-free in drivers/power/supply/da9150-charger.c if a physically proximate attacker unplugs a device.
Затронутые продукты
Ссылки
- CVE-2023-30772
- SUSE Bug 1210329