CVE-2021-29650

CVE-2021-29650 affects the Linux kernel prior to 5.11.11. The netfilter subsystem (net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h) may omit a full memory barrier when a new table value is assigned, enabling a local attacker to trigger a DoS/panic in netfilter. The issue is docume...

CVE-2021-33034

CVE-2021-33034 is a use-after-free in Linux kernel before 5.12.4 in net/bluetooth/hci_event.c when destroying an hci_chan, enabling arbitrary writes. Affected: Linux kernel before 5.12.4 (Bluetooth HCI driver). Mitigation: upgrade to 5.12.4 or later (ChangeLog-5.12.4).

CVE-2020-28374

CVE-2020-28374 affects the Linux kernel’s SCSI target (LIO) code, specifically drivers/target/target_core_xcopy.c, where insufficient identifier checking could let a remote attacker read or write files via directory traversal in an XCOPY request. Affected component is the Linux kernel prior to 5....

CVE-2021-27365

CVE-2021-27365 affects the Linux kernel iSCSI subsystem. The issue is a heap overflow in iSCSI data handling where certain iSCSI data structures lack proper length checks and can exceed PAGE_SIZE; an unprivileged, local user can send a Netlink message (up to the maximum Netlink message length) an...

CVE-2021-33624

CVE-2021-33624 affects the Linux kernel prior to 5.12.13, where the eBPF verifier in kernel/bpf/verifier.c could mispredict branches (e.g., due to type confusion), allowing an unprivileged BPF program to read arbitrary kernel memory locations via a side-channel attack. Several connected advisorie...

CVE-2021-27364

CVE-2021-27364 is a Linux kernel issue affecting the iSCSI libiscsi/iscsi subsystem (out-of-bounds read in the libiscsi module leading to possible kernel memory disclosure or crash). Connected advisories confirm related CVEs (27363, 27365) in the same area affecting sessions/handles and heap over...

CVE-2021-28950

CVE-2021-28950 affects the Linux kernel FUSE path: the issue is in fs/fuse/fuse_i.h and causes a stall on the CPU when a retry loop keeps selecting the same bad inode. A patch-level fix exists in kernel releases up to 5.11.8 and later (addresses the underlying bad-inode handling in FUSE); some so...

CVE-2020-26558

CVE-2020-26558: Bluetooth Core 2.1–5.2 Passkey entry/mitm reflection vulnerability. Nearby attacker could identify the Passkey during pairing by reflecting public key and authentication evidence, enabling completion of authenticated pairing with the correct Passkey. Astra Linux bulletin repeats t...

CVE-2020-36385

CVE-2020-36385 is a use-after-free in the Linux kernel prior to 5.10, specifically in drivers/infiniband/core/ucma.c where the ctx is reachable via the ctx_list in certain ucma_migrate_id paths when ucma_close is called. This vulnerability affects the Linux kernel before 5.10; a fix is referenced...

CVE-2020-27171

The vulnerability CVE-2020-27171 affects Linux kernels before 5.11.8. The issue is in kernel/bpf/verifier.c, where an off-by-one error enables integer underflow that can trigger out-of-bounds speculation in pointer arithmetic, allowing side-channel leakage of kernel memory and defeating Spectre m...

CVE-2021-29155

CVE-2021-29155 is a Linux kernel issue affecting the eBPF verifier path (kernel/bpf/verifier.c) that allows speculative-out-of-bounds memory accesses to leak kernel memory via side-channels. The description from connected documents ties the vulnerability to Spectre mitigations and notes that a lo...

CVE-2020-36322

The CVE-2020-36322 issue affects the Linux kernel FUSE filesystem implementation, where fuse_do_getattr() could call make_bad_inode() in inappropriate situations, potentially causing a system crash. The vulnerability is tied to the FUSE path and was partially addressed by a fix, with the incomple...

CVE-2021-3679

CVE-2021-3679 affects the Linux kernel tracing subsystem (trace ring buffer) prior to 5.14-rc3. The flaw arises in how a user uses the trace ring buffer, enabling a privileged local attacker (CAP_SYS_ADMIN) to starve CPU resources and cause denial of service. The connected documents consistently ...

CVE-2021-3612

CVE-2021-3612 is an out-of-bounds memory write flaw in the Linux kernel joystick subsystem exploitable by a local user via the JSIOCSBTNMAP ioctl. The advisory notes potential system crash and possible privilege escalation. Affected disclosures reference pre-5.13.2 revisions (e.g., fixes upstream...

CVE-2021-23134

CVE-2021-23134 is a Linux kernel NFC LLCP use-after-free in nfc sockets (pre-5.12.4). The issue arises from refcount handling during bind/connect fixes, enabling a local attacker with CAP_NET_RAW to trigger a crash or memory corruption. A related CVE discussion confirms the fix: after nfc_llcp_lo...

CVE-2021-45485

CVE-2021-45485 affects the Linux kernel IPv6 path: net/ipv6/output_core.c exposes an information leak due to how a hash table is used, enabling IPv6 source address-based observation. Impact is partial confidentiality exposure; no integrity/availability impact stated. Affected: Linux kernel prior ...

CVE-2021-3655

CVE-2021-3655 is a Linux kernel SCTP vulnerability (present in kernels prior to affected fixes) where missing size validations on inbound SCTP packets may allow reading uninitialized memory. The initial description and connected advisories confirm the issue exists in the Linux kernel SCTP impleme...

CVE-2020-36311

CVE-2020-36311 affects the Linux kernel prior to 5.9. In arch/x86/kvm/svm/sev.c, destroying a large SEV VM (unregistering many encrypted regions) can trigger a denial of service (soft lockup). The connected advisories confirm the issue and point to a fix in kernel 5.9 (and changelog indicating th...

CVE-2021-3573

CVE-2021-3573 is a local-use-after-free vulnerability in the Linux kernel Bluetooth HCI subsystem (function hci_sock_bound_ioctl) where a race between ioct HCIUNBLOCKADDR and hci_unregister_dev() and calls such as hci_sock_blacklist_add()/del(), hci_get_conn_info(), and hci_get_auth_info() can le...

CVE-2021-43389

CVE-2021-43389 affects the Linux kernel (pre-5.14.15) with an array-index-out-of-bounds flaw in the ISDN CAPI detach_capi_ctr function (kcapi.c). Multiple sources describe this as a local privilege‑escalation/DoS risk, where a privileged attacker could cause memory corruption, DoS, or potentially...

CVE-2020-27820

CVE-2020-27820: Linux kernel use-after-free in nouveau's postclose() during device removal (or unbind). Exploitation local; affects nouveau driver paths; impact: high availability risk, no confidentiality/integrity impact per CVSS. Documents indicate a fix exists in kernel patches (e.g., advisori...

CVE-2021-23133

CVE-2021-23133 is a race condition in the Linux kernel SCTP sockets (net/sctp/socket.c) prior to 5.12-rc8. If sctp_destroy_sock executes without sock_net(sk)->sctp.addr_wq_lock, an element is removed from the auto_asconf_splist list without proper locking, enabling a local attacker with networ...

CVE-2020-27170

The CVE-2020-27170 flaw affects the Linux kernel prior to 5.11.8, where in kernel/bpf/verifier.c there is undesirable out-of-bounds speculation on pointer arithmetic. This can enable a side-channel attack that defeats Spectre mitigations and may allow an attacker to obtain sensitive information f...

CVE-2021-3444

CVE-2021-3444 affects the Linux kernel’s eBPF verifier, where mod32 destination register truncation can be mishandled when the source is known to be zero. This enables a local attacker loading BPF programs to read kernel memory (information disclosure) and potentially perform out-of-bounds writes...

CVE-2021-30002

The CVE-2021-30002 issue affects the Linux kernel prior to 5.11.3. It is caused by a memory leak in video_usercopy inside drivers/media/v4l2-core/v4l2-ioctl.c when handling large webcam arguments. This memory leak can lead to memory exhaustion on affected systems. Connected advisories (e.g., Debi...

CVE-2021-38204

CVE-2021-38204 affects the Linux kernel MAX-3421 host USB controller driver (drivers/usb/host/max3421-hcd.c). The flaw allows a physically proximate attacker to trigger a use-after-free and cause a denial of service (system panic) by removing a MAX-3421 USB device in certain situations. A fix is ...

CVE-2021-31916

CVE-2021-31916 is a Linux kernel vulnerability in the device-mapper code (drivers/md/dm-ioctl.c, list_devices) causing an out-of-bounds memory write due to a bound check failure in kernels before 5.12. An attacker with CAP_SYS_ADMIN (local, no user interaction) can trigger a heap overrun, potenti...

CVE-2021-29647

CVE-2021-29647 affects the Linux kernel (qrtr_recvmsg in net/qrtr/qrtr.c). The issue is an information disclosure via a partially uninitialized data structure, enabling a local attacker to read kernel memory. Root cause: partially uninitialized data in QRTR IPC router handling. Public references ...

CVE-2020-25672

The CVE-2020-25672 entry refers to a memory-leak vulnerability in the Linux kernel NFC LLCP path (llcp_sock_connect). The issue is described as a memory leak in the NFC LLCP implementation, which can lead to resource exhaustion and denial of service when non-blocking socket operations trigger the...

CVE-2021-20317

The connected documents confirm CVE-2021-20317 as a Linux kernel timerqueue race condition: a corrupted timer tree in timerqueue_add can cause wakeups to be missed, enabling a local attacker with special privileges to cause a denial of service (system hang/crash) while the system runs. No explici...

CVE-2021-3483

CVE-2021-3483 refers to a vulnerability in the Linux kernel Nosy driver where a device can be inserted twice into a doubly-linked list, causing a use-after-free when one is removed. This affects versions before 5.12-rc6 and impacts confidentiality, integrity, and availability. The incident is loc...

CVE-2021-38199

CVE-2021-38199 concerns the Linux kernel’s NFSv4 client. The vulnerability arises from incorrect connection-setup ordering in fs/nfs/nfs4client.c, which can be triggered by remote NFSv4 servers during trunking detection, potentially causing a denial of service by hanging mounts. Connected advisor...

CVE-2020-36312

CVE-2020-36312 affects the Linux kernel up to version 5.8.9, where in virt/kvm/kvm_main.c a kmalloc failure can trigger a memory leak in kvm_io_bus_unregister_dev. The connected Nessus advisories confirm the issue as a kernel-level leak and reference the fixed patch in 5.8.10 (ChangeLog-5.8.10; c...

CVE-2020-36310

CVE-2020-36310 affects the Linux kernel prior to 5.8, specifically arch/x86/kvm/svm/svm.c, where set_memory_region_test can infinite-loop on certain nested page faults (CID-e72436bc3a52). The connected Nessus/OSS documents confirm this exact issue in Unity Linux kernels and Debian/openSUSE adviso...

CVE-2020-36386

The CVE-2020-36386 vulnerability affects the Linux kernel prior to 5.8.1 and is located in net/bluetooth/hci_event.c (hci_extended_inquiry_result_evt). A slab-out-of-bounds read in this function could disclose information or contribute to a DoS condition. Exploitation requires local access (AV:L,...

CVE-2021-45486

CVE-2021-45486 affects the Linux kernel IPv4 stack, specifically net/ipv4/route.c, where a very small hash table enables information leakage. The vulnerability arises from the hash table size and is documented to be addressed in Linux kernel 5.12.4 (ChangeLog-5.12.4). Public-connected materials (...

CVE-2021-38198

CVE-2021-38198 affects the Linux kernel’s KVM implementation for x86. The vulnerability resides in arch/x86/kvm/mmu/paging_tmpl.h where shadow page access permissions are computed incorrectly, leading to a missing guest protection page fault. This can undermine guest isolation and may enable inst...

CVE-2020-27815

CVE-2020-27815 is a vulnerability in the Linux kernel JFS filesystem code allowing a local attacker who can set extended attributes to trigger a system panic, memory corruption, or privilege escalation. Publicly documented impact: confidentiality, integrity, and availability may be affected. The ...

CVE-2021-28972

CVE-2021-28972 affects the Linux kernel RPA PCI Hotplug driver (drivers/pci/hotplug/rpadlpar_sysfs.c) up to version 5.11.8. It is a user‑tolerable buffer overflow caused by improper handling of drc_name termination in add_slot_store/remove_slot_store, allowing userspace to write into the kernel s...

CVE-2021-38205

CVE-2021-38205 affects the xilinx_emaclite driver in the Linux kernel. The vulnerability arises because the driver prints a real IOMEM/kernel pointer, which can aid attackers in bypassing ASLR and facilitate information disclosure. Affected state is Linux kernels before 5.13.3; remediation is to ...

CVE-2021-20194

CVE-2021-20194 affects Linux kernels 5.2+ when compiled with CONFIG_BPF_SYSCALL=y, CONFIG_BPF=y, CONFIG_CGROUPS=y, CONFIG_CGROUP_BPF=y, and without hardened_usercopy; a BPF execution bug in __cgroup_bpf_run_filter_getsockopt() can cause a heap overflow. Local attackers can potentially cause DoS o...

CVE-2021-38208

The CVE-2021-38208 entry affects the Linux kernel NFC LLCP path: net/nfc/llcp_sock.c before 5.12.10. A local unprivileged user can trigger a denial of service (NULL pointer dereference and BUG) by performing getsockname after a failed bind. This is a local-privilege scenario with a direct impact ...

CVE-2020-25668

CVE-2020-25668 is a Linux kernel vulnerability in the TTY subsystem (con_font_op) caused by unsynchronized access to fg_console, leading to a use-after-free. According to Debian, this can cause a crash or memory corruption and may enable privilege escalation; CloudLinux notes a fix was applied in...

CVE-2021-29265

CVE-2021-29265 affects the Linux kernel prior to 5.11.7. The vulnerability is in the usbip_sockfd_store function (drivers/usb/usbip/stub_dev.c) where the stub-up sequence has race conditions during updates of local and shared status, enabling a local attacker to trigger a denial of service (kerne...

CVE-2021-3506

CVE-2021-3506 : An out-of-bounds memory access in fs/f2fs/node.c of the Linux kernel (f2fs module) allows a local attacker to read/write out-of-bounds memory, leading to a system crash or leakage of kernel information. Affected are kernel versions before 5.12.0-rc4. The description notes the high...

CVE-2021-29648

CVE-2021-29648 affects the Linux kernel up to version 5.11.11, with the BPF subsystem failing to treat resolved_ids and resolved_sizes as intentionally uninitialized in the vmlinux BTF. The consequence is a system crash on an unexpected access (in map_create and check_btf_info), caused by CID-350...

CVE-2020-25669

CVE-2020-25669 is a Linux kernel use-after-free in sunkbd_reinit triggered after sunkbd interrupts and before freed; an alias remains after NULLing in sinkbd_disconnect, enabling a use-after-free condition. Documents indicate this is a kernel issue with local impact, potentially causing a crash o...

CVE-2021-3501

CVE-2021-3501 affects Linux kernels prior to 5.12. The vulnerability arises from the KVM API: the internal.ndata value is mapped to an array index and can be updated by a user process at any time, enabling an out-of-bounds write. Documented impact is data integrity and system availability. A patc...

CVE-2020-25673

CVE-2020-25673 is described in connected documents as a Linux kernel vulnerability where a non-blocking socket in llcp_sock_connect() can cause a memory leak and eventually hang the system. The Unity Linux UTSA-2026-001467 advisory and related Nessus plugins reiterate this issue, referencing a vu...

CVE-2020-35508

CVE-2020-35508 is a Linux kernel issue describing a race condition and incorrect initialization of the child/parent process ID handling when filtering signal handlers. The flaw permits a local attacker to bypass checks and send signals to a privileged process. Multiple Nessus/MiracleLinux Unity a...