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hlukh.ch Updated: 2026-02-26T03:01:11.012Z · week: 2022-W10

Security Warnings

Curated from public advisories. Focus: visibility, context and fast export — no clickbait.

Latest warnings
CVE-2021-3609
.A flaw was found in the CAN BCM networking protocol in the Linux kernel where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.
2026‑02‑21 · CVE-2021-3609
MSRC 2026‑02‑21 High
CVE-2022-24464
.NET and Visual Studio Denial of Service Vulnerability
2026‑02‑21 · CVE-2022-24464
MSRC 2026‑02‑21 High
CVE-2021-4190
<vuln:Note Title="Mariner" Type="Tag" Ordinal="20">Mariner
2026‑02‑21 · CVE-2021-4190
MSRC 2026‑02‑21 High
CVE-2021-44531
<vuln:Note Title="Mariner" Type="Tag" Ordinal="20">Mariner
2026‑02‑21 · CVE-2021-44531
MSRC 2026‑02‑21 High
CVE-2022-21824
<vuln:Note Title="Mariner" Type="Tag" Ordinal="20">Mariner
2026‑02‑21 · CVE-2022-21824
MSRC 2026‑02‑21 High
CVE-2022-0729
<vuln:Note Title="Mariner" Type="Tag" Ordinal="20">Mariner
2026‑02‑21 · CVE-2022-0729
MSRC 2026‑02‑21 High
CVE-2022-24407
<vuln:Note Title="Mariner" Type="Tag" Ordinal="20">Mariner
2026‑02‑21 · CVE-2022-24407
MSRC 2026‑02‑21 High
CVE-2022-23308
<vuln:Note Title="Mariner" Type="Tag" Ordinal="20">Mariner
2026‑02‑21 · CVE-2022-23308
MSRC 2026‑02‑21 High
CVE-2021-43666
A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.
2026‑02‑21 · CVE-2021-43666
MSRC 2026‑02‑21 High
CVE-2021-3640
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.
2026‑02‑21 · CVE-2021-3640
MSRC 2026‑02‑21 High
CVE-2021-3698
A flaw was found in Cockpit in versions prior to 260 in the way it handles the certificate verification performed by the System Security Services Daemon (SSSD). This flaw allows client certificates to authenticate successfully regardless of the Certificate Revocation List (CRL) configuration or the certificate status. The highest threat from this vulnerability is to confidentiality.
2026‑02‑21 · CVE-2021-3698
MSRC 2026‑02‑21 High
CVE-2022-0811
A flaw was found in CRI-O in the way it set kernel options for a pod. This issue allows anyone with rights to deploy a pod on a Kubernetes cluster that uses the CRI-O runtime to achieve a container escape and arbitrary code execution as root on the cluster node, where the malicious pod was deployed.
2026‑02‑21 · CVE-2022-0811
MSRC 2026‑02‑21 High
CVE-2021-3737
A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker who controls the HTTP server to make the client script enter an infinite loop consuming CPU time. The highest threat from this vulnerability is to system availability.
2026‑02‑21 · CVE-2021-3737
MSRC 2026‑02‑21 High
CVE-2021-3656
A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result the L2 guest would be allowed to read/write physical pages of the host resulting in a crash of the entire system leak of sensitive data or potential guest-to-host escape.
2026‑02‑21 · CVE-2021-3656
MSRC 2026‑02‑21 High
CVE-2022-1050
A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated potentially leading to a use-after-free condition.
2026‑02‑21 · CVE-2022-1050
MSRC 2026‑02‑21 High
CVE-2022-0711
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
2026‑02‑21 · CVE-2022-0711
MSRC 2026‑02‑21 High
CVE-2022-0847
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
2026‑02‑21 · CVE-2022-0847
MSRC 2026‑02‑21 High
CVE-2022-0500
A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD leading to a possible out-of-bounds memory write in the Linux kernel’s BPF subsystem due to the way a user loads BTF. This flaw allows a local user to crash or escalate their privileges on the system.
2026‑02‑21 · CVE-2022-0500
MSRC 2026‑02‑21 High
CVE-2022-27666
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.
2026‑02‑21 · CVE-2022-27666
MSRC 2026‑02‑21 High
CVE-2022-0891
A heap buffer overflow in ExtractImageSection function in tiffcrop.c in libtiff library Version 4.3.0 allows attacker to trigger unsafe or out of bounds memory access via crafted TIFF image file which could result into application crash potential information disclosure or any other context-dependent impact
2026‑02‑21 · CVE-2022-0891
MSRC 2026‑02‑21 High
CVE-2021-3739
A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.
2026‑02‑21 · CVE-2021-3739
MSRC 2026‑02‑21 High
CVE-2022-0330
A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system.
2026‑02‑21 · CVE-2022-0330
MSRC 2026‑02‑21 High
CVE-2022-0435
A stack overflow flaw was found in the Linux kernel's TIPC protocol functionality in the way a user sends a packet with malicious content where the number of domain member nodes is higher than the 64 allowed. This flaw allows a remote user to crash the system or possibly escalate their privileges if they have access to the TIPC network.
2026‑02‑21 · CVE-2022-0435
MSRC 2026‑02‑21 High
CVE-2021-4202
A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. This flaw could allow a local attacker with user privileges to cause a data race problem while the device is getting removed leading to a privilege escalation problem.
2026‑02‑21 · CVE-2021-4202
MSRC 2026‑02‑21 High
CVE-2022-1011
A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the way a user triggers write(). This flaw allows a local user to gain unauthorized access to data from the FUSE filesystem resulting in privilege escalation.
2026‑02‑21 · CVE-2022-1011
MSRC 2026‑02‑21 High
CVE-2021-3748
A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU resulting in a denial of service condition or potentially execute code on the host with the privileges of the QEMU process.
2026‑02‑21 · CVE-2021-3748
MSRC 2026‑02‑21 High
CVE-2022-0516
A vulnerability was found in kvm_s390_guest_sida_op in the arch/s390/kvm/kvm-s390.c function in KVM for s390 in the Linux kernel. This flaw allows a local attacker with a normal user privilege to obtain unauthorized memory write access. This flaw affects Linux kernel versions prior to 5.17-rc4.
2026‑02‑21 · CVE-2022-0516
MSRC 2026‑02‑21 High
CVE-2022-0492
A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw under certain circumstances allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.
2026‑02‑21 · CVE-2022-0492
MSRC 2026‑02‑21 High
CVE-2021-3618
ALPACA is an application layer protocol content confusion attack exploiting TLS servers implementing different protocols but using compatible certificates such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.
2026‑02‑21 · CVE-2021-3618
MSRC 2026‑02‑21 High
CVE-2022-0998
An integer overflow flaw was found in the Linux kernel’s virtio device driver code in the way a user triggers the vhost_vdpa_config_validate function. This flaw allows a local user to crash or potentially escalate their privileges on the system.
2026‑02‑21 · CVE-2022-0998
MSRC 2026‑02‑21 High
CVE-2021-4157
An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user having access to the NFS mount could potentially use this flaw to crash the system or escalate privileges on the system.
2026‑02‑21 · CVE-2021-4157
MSRC 2026‑02‑21 High
CVE-2021-3743
An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
2026‑02‑21 · CVE-2021-3743
MSRC 2026‑02‑21 High
CVE-2022-0995
An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem. This flaw can overwrite parts of the kernel state potentially allowing a local user to gain privileged access or cause a denial of service on the system.
2026‑02‑21 · CVE-2022-0995
MSRC 2026‑02‑21 High
CVE-2021-4197
An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.
2026‑02‑21 · CVE-2021-4197
MSRC 2026‑02‑21 High
CVE-2022-24469
Azure Site Recovery Elevation of Privilege Vulnerability
2026‑02‑21 · CVE-2022-24469
MSRC 2026‑02‑21 High
CVE-2022-24467
Azure Site Recovery Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24467
MSRC 2026‑02‑21 High
CVE-2022-24468
Azure Site Recovery Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24468
MSRC 2026‑02‑21 High
CVE-2022-24517
Azure Site Recovery Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24517
MSRC 2026‑02‑21 High
CVE-2022-24470
Azure Site Recovery Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24470
MSRC 2026‑02‑21 High
CVE-2022-24471
Azure Site Recovery Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24471
MSRC 2026‑02‑21 High
CVE-2022-24520
Azure Site Recovery Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24520
MSRC 2026‑02‑21 High
CVE-2021-38578
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
2026‑02‑21 · CVE-2021-38578
MSRC 2026‑02‑21 High
CVE-2022-1160
heap buffer overflow in get_one_sourceline in vim/vim
2026‑02‑21 · CVE-2022-1160
MSRC 2026‑02‑21 High
CVE-2022-0943
Heap-based Buffer Overflow occurs in vim in vim/vim
2026‑02‑21 · CVE-2022-0943
MSRC 2026‑02‑21 High
CVE-2022-24457
HEIF Image Extensions Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24457
MSRC 2026‑02‑21 High
CVE-2022-23301
HEVC Video Extensions Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-23301
MSRC 2026‑02‑21 High
CVE-2022-22006
HEVC Video Extensions Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-22006
MSRC 2026‑02‑21 High
CVE-2022-22007
HEVC Video Extensions Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-22007
MSRC 2026‑02‑21 High
CVE-2022-24452
HEVC Video Extensions Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24452
MSRC 2026‑02‑21 High
CVE-2022-24453
HEVC Video Extensions Remote Code Execution Vulnerability
2026‑02‑21 · CVE-2022-24453
MSRC 2026‑02‑21 High
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