CVE-2021-3773

CVE-2021-3773 is a netfilter information-disclosure vulnerability in the Linux kernel that could allow a network-connected attacker to infer the OpenVPN connection endpoint. The issue is described as an information leak through netfilter, enabling reconnaissance for further attacks. Exploitation ...

CVE-2021-4083

CVE-2021-4083 is a read-after-free in Linux kernel Unix domain socket GC triggered by a race between close() and fget(). Affected kernels are prior to 5.16-rc4. Local users could crash the system or escalate privileges. Affected products include upstream kernel and Linux distributions (Astra Linu...

CVE-2021-3640

The CVE-2021-3640 entry is confirmed with concrete technical details in Connected documents: a use-after-free in the Linux kernel HCI sco_sock_sendmsg() is triggered by user actions around UFFDIO_REGISTER and related race with sco_conn_del(). The flaw allows a local privileged user to crash the s...

CVE-2022-29582

CVE-2022-29582 refers to a use-after-free in the Linux kernel io_uring timeout handling. The vulnerability resides in fs/io_uring.c and stems from a race condition in io_uring timeouts that can be triggered by a local user who does not have access to any user namespace. The initial description no...

CVE-2022-0330

CVE-2022-0330 affects the Linux kernel i915 GPU driver. The root cause is a missing GPU TLB flush in the i915 driver, enabling a local attacker to cause a denial of service or privilege escalation by running code on the GPU. Public documents from connected sources confirm the flaw and its associa...

CVE-2021-4155

CVE-2021-4155 is a data-leak in the XFS filesystem via the XFS_IOC_ALLOCSP IOCTL that increases the size of files with unaligned sizes. A local attacker could leak data not accessible otherwise. Affected: Linux kernel with XFS. Root cause: flaw in handling size increases for unaligned allocations...

CVE-2022-0322

The CVE-2022-0322 entry concerns a flaw in the Linux kernel SCTP implementation. Specifically, in net/sctp/sm_make_chunk.c, the function sctp_make_strreset_req can trigger a BUG_ON when an operation uses more buffer than allocated, enabling local privilege access to cause a denial of service. Con...

CVE-2021-3669

CVE-2021-3669 is a Linux kernel vulnerability where measuring shared memory usage does not scale with large shared memory segment counts, enabling resource exhaustion and DoS. Connected sources confirm the issue affects multiple kernel versions and distributions, with remediations following vendo...

CVE-2022-42703

CVE-2022-42703 affects the Linux kernel prior to 5.19.7 via a use-after-free in leaf anon_vma double reuse in mm/rmap.c. This enables local escalation of privilege (per CVSS: LOCAL, HIGH availability impact, LOW complexity, no user interaction). Upstream fixes were applied in kernel 5.19.7 (see C...

CVE-2021-4037

Summary: CVE-2021-4037 affects the Linux kernel’s inode_init_owner() logic for XFS SGID directories, enabling local users to create files with unintended group ownership and SGID/group-exec bits when the directory is SGID and writable to non-group members. The issue is linked to a missed fix rela...

CVE-2022-42896

CVE-2022-42896 affects the Linux kernel, specifically use-after-free in net/bluetooth/l2cap_core.c (l2cap_connect and l2cap_le_connect_req). A remote Bluetooth proximity attacker could trigger code execution or leak kernel memory. A fix is available by upgrading past the commit 711f8c3fb3db618970...

CVE-2022-30594

The CVE-2022-30594 issue affects the Linux kernel prior to 5.17.2, where the PTRACE_SEIZE path could bypass the PT_SUSPEND_SECCOMP restrictions and allow a local attacker to bypass seccomp-related restrictions. Connected advisories (Astra Linux, AlmaLinux advisories) confirm the same vulnerabilit...

CVE-2022-0516

CVE-2022-0516 affects the KVM for s390 in the Linux kernel, specifically the arch/s390/kvm/kvm-s390.c function kvm_s390_guest_sida_op. The vulnerability allows a local user with normal privileges to obtain unauthorized memory write access due to an insufficient check in the KVM s390x release_agen...

CVE-2022-1184

CVE-2022-1184 affects the Linux kernel ext4 file-system code (fs/ext4/namei.c:dx_insert_block). The flaw is a use-after-free that can be triggered by a local user to cause a denial of service. Astra Linux bulletin also documents this exact issue. The connected documents do not specify a fixed ver...

CVE-2021-4203

CVE-2021-4203 is a Linux kernel use-after-free read flaw in sock_getsockopt() triggered by a race between SO_PEERCRED/SO_PEERGROUPS and listen()/connect(). An authenticated local attacker could crash the system or leak kernel information. The connected IBM advisories document affected products (I...

CVE-2021-33655

CVE-2021-33655 is confirmed in the provided documents as an out-of-bounds memory write triggered by malicious data sent via the framebuffer ioctl FBIOPUT_VSCREENINFO in the Linux kernel framebuffer/console path. The issue allows a local user to crash the system and potentially escalate privileges...

CVE-2021-3772

CVE-2021-3772 affects the Linux kernel SCTP stack: a blind attacker who knows IPs/ports and can spoof packets can kill an existing SCTP association by sending invalid chunks. The connected advisories confirm the issue and point to a patch in the Linux kernel (commit 32f8807a48ae55be0e76880cfe8607...

CVE-2022-1508

The CVE-2022-1508 entry describes an out-of-bounds read in the Linux kernel io_uring module triggered by certain parameters to io_read(), enabling a local user with low privileges and no user interaction to read memory out of bounds. The provided data notes a MEDIUM base score (6.1, CVSS 3.1) wit...

CVE-2022-1789

CVE-2022-1789 targets KVM in the Linux kernel. With shadow paging enabled, INVPCID can lead to a NULL pointer dereference when CR0.PG=0, because the invlpg callback is not set, causing a crash in kvm_mmu_invpcid_gva. The same issue is echoed in Astra Linux and AlmaLinux advisories, which list KVM...

CVE-2022-1353

CVE-2022-1353 — pfkey_register (net/key/af_key.c, Linux kernel) : A local, unprivileged user can gain access to kernel memory due to a flaw in pfkey_register. The vulnerability can lead to a system crash or leakage of internal kernel information. The Connected documents reference Linux kernel adv...

CVE-2022-28356

CVE-2022-28356 is a Linux kernel vulnerability describing a refcount leak in net/llc/af_llc.c that affects kernels before 5.17.1. Connected docs confirm the issue and reference a fix in 5.17.1 (and advisories in Debian DSA 5127-1/DSA-5173-1, Astra/Linux bulletins). The CVSS v3.1 base score is 5.5...

CVE-2021-4002

CVE-2021-4002 describes a memory-leak flaw in the Linux kernel hugetlbfs memory usage caused by mappings being created twice (via shmget) for regions aligned to PUD, enabling a local user to access data that should be protected. The connected documents confirm this vulnerability across multiple L...

CVE-2022-1015

CVE-2022-1015: A local out-of-bounds write in Linux kernel nf_tables_api.c (netfilter/nf_tables) is reported. Connected Astra/Linux documents confirm the vulnerability and recommend updating to a later kernel version (e.g., via vendor/KMS updates) to mitigate. Exploitation details are not provide...

CVE-2022-1012

CVE-2022-1012 affects the Linux kernel TCP source port generation (net/ipv4/tcp.c) due to a small table perturb size, enabling information leakage and potential denial of service. Multiple connected advisories reiterate the memory-leak flaw in the TCP source port algorithm and indicate a patched ...

CVE-2021-45868

CVE-2021-45868: Linux kernel before 5.15.3 does not validate the on-disk quota_tree block number in quota_tree.c, which can lead to a use-after-free in kernel/locking/rwsem.c if a quota file is corrupted. Affected: Linux kernel up to 5.15.2 (and older) with quota support. Impact: potential kernel...

CVE-2022-0168

CVE-2022-0168 is a Linux kernel local DoS in smb2_ioctl_query_info in fs/cifs/smb2ops.c caused by an incorrect return from memdup_user, allowing a privileged (CAP_SYS_ADMIN) local attacker to crash the system. Public details in connected sources reaffirm the same kernel-level flaw affecting CIFS ...

CVE-2022-25258

The CVE-2022-25258 issue affects the Linux kernel USB Gadget subsystem, specifically drivers/usb/gadget/composite.c, where interface OS descriptor requests with large indices or NULL function pointer handling were not properly validated, enabling memory corruption. It affects kernels before 5.16....

CVE-2022-43945

CVE-2022-43945 affects the Linux kernel NFSD: in versions prior to 5.19.17 and 6.0.2, an RPC message over TCP can cause the send buffer to be oversized, leading NFSD to write beyond allocated space and crash (DoS). The issue is caused by combining receive and send buffers into a single page array...

CVE-2021-3743

CVE-2021-3743 is an out-of-bounds memory read flaw in the Linux kernel’s Qualcomm IPC router protocol. The issue arises from a missing sanity check, allowing a local attacker to read out-of-bounds kernel memory, potentially causing system crashes or information leakage. Documents consistently des...

CVE-2022-24958

CVE-2022-24958 relates to the Linux kernel USB gadget subsystem, specifically drivers/usb/gadget/legacy/inode.c up to version 5.16.8, where dev->buf release is mishandled. The consequence is a use‑after‑free condition in the USB gadget legacy path, which can lead to a local denial of service a...

CVE-2021-3744

CVE-2021-3744 is a memory-leak DoS in the Linux kernel: the flaw occurs in the ccp_run_aes_gcm_cmd() function (drivers/crypto/ccp/ccp-ops.c), allowing memory consumption-based denial of service. Connected advisories (Astra Linux and Amazon Linux 2 kernel updates) confirm the same root cause and n...

CVE-2022-2078

CVE-2022-2078 is a Linux kernel vulnerability in nft_set_desc_concat_parse() that can trigger a buffer overflow, leading to denial of service and possibly code execution. The linked AstraEU/IBM advisories reiterate the same function and impact, describing local access requirements and potential f...

CVE-2022-4662

CVE-2022-4662 is a Linux kernel USB core subsystem vulnerability describing improper access control when a user attaches a USB device. A local attacker could trigger a crash by exploiting the flawed USB device handling. The connected IBM bulletin for Spectrum Protect Plus notes a remediation: fix...

CVE-2021-20321

CVE-2021-20321 is a race-condition vulnerability in the Linux kernel OverlayFS subsystem affecting how file renames are performed, potentially allowing a local attacker to crash the system via OverlayFS misuse. Connected advisories corroborate that the issue resides in OverlayFS file object handl...

CVE-2022-24448

CVE-2022-24448 affects the Linux kernel’s NFS path: in fs/nfs/dir.c, if an application opens a regular file with O_DIRECTORY set, nfs_atomic_open() does a regular lookup and returns uninitialized data in the file descriptor when a regular file is found instead of ENOTDIR. This issue is documented...

CVE-2022-0480

CVE-2022-0480 is a Linux kernel vulnerability in filelock_init (fs/locks.c) where memory exhaustion can occur because memcg does not limit the number of POSIX file locks. Connected documents confirm the issue across multiple Linux distributions (Astra Linux, AlmaLinux, IBM Power PowerVM advisory)...

CVE-2022-2153

CVE-2022-2153 is a vulnerability in the Linux kernel’s KVM related to setting a SynIC IRQ. The issue allows a misbehaving VMM to write to SYNIC/STIMER MSRs, which can cause a NULL pointer dereference and a kernel oops, enabling an unprivileged local attacker on the host to trigger a denial of ser...

CVE-2022-3108

CVE-2022-3108 is a Linux kernel vulnerability affecting kernels up to 5.16-rc6 where kfd_parse_subtype_iolink (drivers/gpu/drm/amd/amdkfd/kfd_crat.c) does not check the return value of kmemdup(). The issue is a missing return-value check in memory copy logic, which could enable memory corruption ...

CVE-2021-3753

CVE-2021-3753 describes a race in the Linux kernel’s vt_k_ioctl() (vt_ioctl.c) that may cause an out-of-bounds read in vt as vc_mode write access is not protected by a lock. Impact is listed as data confidentiality; exploitation details are not provided in the supplied documents. Connected source...

CVE-2022-26490

CVE-2022-26490 affects the Linux kernel ST21NFCA NFC driver (st21nfca_connectivity_event_received in drivers/nfc/st21nfca/se.c) up to and including kernel versions prior to the patched releases. The issue is a buffer overflow caused by untrusted length parameters (EVT_TRANSACTION), which can lead...

CVE-2021-4149

CVE-2021-4149: Local privilege escalation via Linux kernel btrfs deadlock. Affects btrfs_alloc_tree_b in fs/btrfs/extent-tree.c where an improper lock operation can deadlock, enabling a local user to cause a denial-of-service. Debian LTS advisory DLA-3065-1 lists CVE-2021-4149 and notes the patch...

CVE-2022-39188

CVE-2022-39188 describes a race in include/asm-generic/tlb.h in the Linux kernel up to version 5.18/5.19 where unmap_mapping_range races with munmap for VM_PFNMAP VMAs can free a page still holding stale TLB entries. This can cause a page to be freed while TLBs still cache old mappings, potential...

CVE-2022-0850

CVE-2022-0850 affects the Linux kernel’s ext4 filesystem by an information leak via the ext4_extent_header to userspace. The connected sources corroborate a kernel information leak (information disclosure) in ext4_extent_header and note fixes in various distributions:CloudLinux/CSLAs reference “e...

CVE-2022-2961

CVE-2022-2961 concerns the Linux kernel’s PLP Rose functionality. The vulnerability is a use-after-free flaw caused by a race: a local user can trigger a race between calling bind and the rose_bind() function, potentially crashing the kernel or escalating privileges. Impact is described as local ...

CVE-2022-3594

CVE-2022-3594 is a Linux kernel vulnerability in the BPF component: the intr_callback in drivers/net/usb/r8152.c can cause logging of excessive data. It is exploitable remotely as described; a patch/update is recommended. Connected advisories (Astra Linux, Amazon Linux livepatch) mirror these det...

CVE-2022-39842

CVE-2022-39842 affects the Linux kernel up to version 5.19, specifically in drivers/video/fbdev/pxa3xx-gcu.c (pxa3xx_gcu_write). The count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check; this value is then passed as the third argument ...

CVE-2022-3524

CVE-2022-3524 affects the Linux kernel IPv6 Handler’s ipv6_renew_options, causing a memory leak. The vulnerability can be triggered remotely per some sources; a patch is available and applies to mitigate the issue. Review the Linux kernel patches referenced in the CVE details and apply the approp...

CVE-2022-45869

CVE-2022-45869 is a Linux kernel issue describing a race condition in the x86 KVM subsystem that can be triggered when nested virtualization and the TDP MMU are enabled. The vulnerability affects the Linux kernel up to version 6.1-rc6 as described in the Astra Linux security bulletin, which mirro...

CVE-2022-1852

CVE-2022-1852 concerns a NULL pointer dereference in the Linux kernel’s KVM module during x86 emulation (x86_emulate_insn) when the guest executes an illegal instruction on Intel CPUs, which can lead to a denial of service. The vulnerability is in the KVM emulation path (arch/x86/kvm/emulate.c) a...

CVE-2022-0494

CVE-2022-0494 is a Linux kernel information-leak flaw in scsi_ioctl.c that could let a local attacker with CAP_SYS_ADMIN or CAP_SYS_RAWIO extract kernel information, affecting confidentiality. The associated documents confirm the vulnerability and provide CVSS context (local access, high confiden...