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CVE-2021-43389

Status Candidate

Overview

An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c.

Related Files

Red Hat Security Advisory 2022-1975-01
Posted May 11, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-1975-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include buffer overflow, denial of service, information leakage, integer overflow, out of bounds read, out of bounds write, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-0404, CVE-2020-13974, CVE-2020-27820, CVE-2021-0941, CVE-2021-20322, CVE-2021-26401, CVE-2021-29154, CVE-2021-3612, CVE-2021-3669, CVE-2021-37159, CVE-2021-3743, CVE-2021-3744, CVE-2021-3752, CVE-2021-3759, CVE-2021-3764, CVE-2021-3772, CVE-2021-3773, CVE-2021-4002, CVE-2021-4037, CVE-2021-4083, CVE-2021-4157, CVE-2021-41864, CVE-2021-4197, CVE-2021-4203, CVE-2021-42739, CVE-2021-43389, CVE-2021-43976
SHA-256 | 76e7a83f67a9594d044f0555940c9cdc95fcacfd7cb6fe3ce07a4e4115106e22
Ubuntu Security Notice USN-5210-2
Posted Jan 13, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5210-2 - USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression that caused failures to boot in environments with AMD Secure Encrypted Virtualization enabled. This update fixes the problem.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-26541, CVE-2021-20321, CVE-2021-3760, CVE-2021-4002, CVE-2021-41864, CVE-2021-43056, CVE-2021-43389
SHA-256 | e3346a86e14d19f527583fd7bd863d075a726e9e3b106f07da844d9e99c33e20
Ubuntu Security Notice USN-5218-1
Posted Jan 11, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5218-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that the eBPF implementation in the Linux kernel did not properly validate the memory size of certain ring buffer operation arguments. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-20321, CVE-2021-3760, CVE-2021-4002, CVE-2021-41864, CVE-2021-43056, CVE-2021-43267, CVE-2021-43389
SHA-256 | f90f83bbcd246c8d673aa082579a0c09cd5de90a6bc0cee2d59e2eed594b9e9a
Ubuntu Security Notice USN-5210-1
Posted Jan 6, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5210-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-26541, CVE-2021-20321, CVE-2021-3760, CVE-2021-4002, CVE-2021-41864, CVE-2021-43056, CVE-2021-43389
SHA-256 | ecb4af237def80337795c4bf285352fb679661f2a5664c504d0f396c762a31ee
Ubuntu Security Notice USN-5209-1
Posted Jan 6, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5209-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that a race condition existed in the timer implementation in the Linux kernel. A privileged attacker could use this cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-20317, CVE-2021-20321, CVE-2021-3760, CVE-2021-4002, CVE-2021-41864, CVE-2021-43389
SHA-256 | 48064c7ea8ce65c4e3051e87cd43253fcf2b6a445eea15418d3b3f219708afba
Ubuntu Security Notice USN-5208-1
Posted Jan 6, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5208-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-20321, CVE-2021-3760, CVE-2021-4002, CVE-2021-41864, CVE-2021-43056, CVE-2021-43267, CVE-2021-43389
SHA-256 | ea7e5bc5b3961bfb7b88bcc657765481b669c52e08a5c1ef062c1477afed2dba
Ubuntu Security Notice USN-5165-1
Posted Dec 1, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5165-1 - It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface implementation. A local attacker could possibly use this to cause a denial of service or execute arbitrary code. It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2021-3760, CVE-2021-3772, CVE-2021-42327, CVE-2021-42739, CVE-2021-43056, CVE-2021-43267, CVE-2021-43389
SHA-256 | a0b01b9f4766a141e1c20c5d99e1ca222d00d4498a726851cff5f6c91eb4780c
Ubuntu Security Notice USN-5139-1
Posted Nov 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5139-1 - Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information. It was discovered that the AMD Cryptographic Coprocessor driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-3655, CVE-2021-3760, CVE-2021-41864, CVE-2021-43056, CVE-2021-43389
SHA-256 | 52feb4232affbf8f08aa03373bb26616e760d7e294d4e900244f9cc20667f5bd
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