CVE-2020-24587

CVE-2020-24587 is referenced in the Amazon Linux 2 kernel advisory for Kernel-5.10-2022-002. The connected document confirms a flaw in the Linux kernel 802.11 wifi fragmentation handling where fragments encrypted under different keys can be reassembled and decrypted, enabling an attacker within w...

CVE-2023-4206

CVE-2023-4206 is a use-after-free vulnerability in the Linux kernel net/sched: cls_route (route handling) caused by route4_change() copying the entire tcf_result into a new filter. On update, tcf_unbind_filter() is invoked on the old instance, decreasing the parent class’ filter_cnt and potential...

CVE-2020-10711

The CVE-2020-10711 entry concerns a NULL pointer dereference in the Linux kernel SELinux subprocess during CIPSO category bitmap import. Affected are kernel versions before 5.7; processing the CIPSO restricted bitmap tag in cipso_v4_parsetag_rbm sets a security attribute indicating the bitmap exi...

CVE-2021-46929

CVE-2021-46929 is a Linux kernel SCTP vulnerability where freeing an old SCTP endpoint could race with lock_sock, risking a use-after-free. The fix delays endpoint free via call_rcu and moves sock_put and endpoint freeing into sctp_endpoint_destroy_rcu() to keep ep alive under rcu_read_lock durin...

CVE-2021-46940

CVE-2021-46940 is a Linux kernel vulnerability in the perf/turbostat timer path. The bug stems from index conversion in tools/power turbostat where idx_to_offset() returns a 32-bit int while MSR_PKG_ENERGY_STAT is a 32-bit unsigned value, causing negative interpretation and triggering a guard in ...

CVE-2021-46936

CVE-2021-46936 affects the Linux kernel (net: fix use-after-free in tw_timer_handler). The flaw allowed use-after-free on net->mib.net_statistics when destroying a net namespace if inflight time-wait timers exist; it is triggered during path of timer handling and ip/mib teardown. The fix reloc...

CVE-2021-46909

Mode C (normal, concrete details available) CVE-2021-46909 affects the Linux kernel PCI subsystem (ARM) and is resolved by a PCI interrupt/mapping fix in ARM: footbridge. The root cause was that after commit 30fdfb929e82, the kernel started mapping PCI IRQs whenever a PCI driver is probed via pci...

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-2021-46915

The CVE-2021-46915 issue is in the Linux kernel’s netfilter nft_limit code. nft_limit_init attempted to divide a 64-bit value by a 64-bit expectation but used div_u64 (dividing 64-bit by 32-bit), risking a divide error. The fix changes nft_limit_init to use the correct 64-bit division function (d...

CVE-2018-18955

CVE-2018-18955 affects Linux kernels 4.15.x–4.19.x, with privilege escalation via map_write() in kernel/user_namespace.c when nested user namespaces have more than 5 UID/GID ranges. A user with CAP_SYS_ADMIN in the affected namespace can bypass controls outside the namespace (e.g., read /etc/shad...

CVE-2023-52440

The CVE-2023-52440 vulnerability concerns ksmbd in the Linux kernel where a slub overflow can occur during key exchange if authblob->SessionKey.Length exceeds CIFS_KEY_SIZE. The root cause is in ksmbd_decode_ntlmssp_auth_blob() and the subsequent copy to the session key array via cifs_arc4_cry...

CVE-2019-17666

CVE-2019-17666 affects the Linux kernel Realtek rtlwifi driver (rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c). The root cause is a missing upper-bound check that leads to a buffer overflow. Impact stated in sources includes memory corruption and potential remote code execution, wit...

CVE-2018-20856

CVE-2018-20856 : Linux kernel before 4.18.7 contains a use-after-free in block/blk-core.c__blk_drain_queue() when an error case is mishandled. This could allow a local attacker to cause a denial of service or, potentially, execute arbitrary code. The issue was addressed in the 4.18.7 patch releas...

CVE-2020-36777

CVE-2020-36777 is a Linux kernel issue where media: dvbdev had a memory leak in dvb_media_device_free(), documented as freeing dvbdev->adapter->conn before NULL-ing it. The connected MiracleLinux advisory (AXSA-2024-8481:17) lists this CVE among others and confirms a fix/vendor advisory. Th...

CVE-2021-46927

CVE-2021-46927 concerns Linux kernel Nitro Enclaves memory mapping. After commit 5b78ed24e8ec, a call to get_user_pages() can trigger an mmap assertion when setting enclave memory regions. The fix switches to get_user_pages_unlocked() for enclave memory region setup, mirroring patterns like mmap_...

CVE-2015-1593

CVE-2015-1593 affects the Linux kernel: on 64-bit platforms, the stack randomization (ASLR) feature uses incorrect data types for bitwise left-shift results, making it easier to predict the stack top address and bypass ASLR. The issue is tied to functions such as randomize_stack_top in fs/binfmt_...

CVE-2020-36776

In the Linux kernel, CVE-2020-36776 concerns the slab OOB issue in thermal/cpufreq_cooling. The vulnerability is triggered in cpu_power_to_freq() when the EM table does not contain a suitable power entry (power below OPP0), leading to a negative index read. The documented fix returns the lowest a...

CVE-2022-3564

CVE-2022-3564 is a high-severity Linux kernel vulnerability involving a use-after-free in the Bluetooth subsystem, specifically the function l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c . Connected advisories (CentOS, AlmaLinux, AlmaLinux-RT, Astra Linux, and others) confirm the same weak...

CVE-2022-25636

CVE-2022-25636 affects the Linux kernel (5.4–5.6.10) via an out-of-bounds heap write in net/netfilter/nf_dup_netdev.c related to nf_tables_offload. This enables local privilege escalation. The connected documents confirm the affected range and the heap OOB write, but do not provide a detailed fix...

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-2018-13405

CVE-2018-13405 involves the Linux kernel inode_init_owner() logic where, in a scenario with an SGID directory and a writably user who is not in that group, a local user could create a plain file with the SGID group ownership and executable bits, effectively escalating privileges. Connected docume...

CVE-2019-14284

CVE-2019-14284 affects the Linux kernel prior to 5.2.3, where floppy.c can suffer a division-by-zero in setup_format_params. Two consecutive ioctls can trigger a DOs: the first ioctl sets geometry (.sect/.rate) such that F_SECT_PER_TRACK becomes zero; the second triggers the floppy format operati...

CVE-2019-11479

The CVE-2019-11479 family (SACK/MSS issues on the Linux kernel) stems from a hard-coded MSS of 48 bytes, enabling remote DoS via fragmented TCP handling. Public docs list CVE-2019-11477 (SACK Panic), CVE-2019-11478 (SACK Slowness/Excess Resource Usage), and CVE-2019-11479 (Low MSS) with kernel-wi...

CVE-2024-26875

The Linux kernel contains a use-after-free (UAF) vulnerability in the pvrusb2 driver, specifically within the pvr2_context_set_notify function at drivers/media/usb/pvrusb2/pvrusb2-context.c:35. The root cause is a race condition where Task A sets a disconnect_flag, causing Task B to meet a condit...

CVE-2020-24588

The CVE-2020-24588 entry relates to the 802.11 Wi‑Fi fragmentation/ A‑MSDU handling issue where the plaintext QoS header flag isn’t authenticated, enabling an attacker to inject packets by sending non‑SSP A‑MSDU frames (FragAttacks). Connected Astra Linux advisories describe this as a variant of ...

CVE-2021-46949

CVE-2021-46949 concerns the Linux kernel sfc (Solarflare) network driver path: farch TX queue lookup during TX flush done handling. The root cause is starting TXQ processing from a TXQ instance number (qid) rather than a TXQ type, which could cause efx_get_tx_queue() to return NULL and trigger pa...

CVE-2021-22543

CVE-2021-22543 is described in connected advisories as a local privilege-escalation through KVM and improper handling of VM_IO|VM_PFNMAP VMAs, which can bypass RO checks and allow reading/writing guest memory by a privileged VM operator. Technical details across sources indicate the vulnerability...

CVE-2021-46948

CVE-2021-46948 relates to the Linux kernel sfc/farch driver. The TX queue lookup in TX event handling could start from a TXQ label instead of a TXQ type, causing efx_channel_get_tx_queue() to potentially return NULL and trigger a NULL dereference/panic. The advisory states this vulnerability was ...

CVE-2024-1086

CVE-2024-1086 is a use-after-free in Linux kernel nf_tables (netfilter). The vulnerability stems from nft_verdict_init() allowing positive values as drop errors in the hook verdict, enabling nf_hook_slow() to trigger a double-free when NF_DROP is issued with a drop error resembling NF_ACCEPT. Exp...

CVE-2014-0196

CVE-2014-0196 affects the Linux kernel (through 3.14.3) specifically the n_tty_write function in drivers/tty/n_tty.c. The flaw permits a local user to trigger a race condition between read and write operations with long strings in the LECHO & !OPOST case, enabling denial of service (memory corrup...

CVE-2019-3846

CVE-2019-3846 affects the upstream kernel’s Marvell mwifiex wireless kernel driver. The description documents a memory corruption flaw that could allow privilege escalation when connecting to a malicious wireless network. Connected sources confirm this is within the mwifiex driver and describe th...

CVE-2019-15505

CVE-2019-15505 affects the technisat-usb2 media driver in Linux kernels up to 5.2.9. The issue arises from improper validation of incoming IR packets, leading to a heap buffer over-read. An attacker capable of adding USB devices (potentially via remote USB technologies like usbip/usbredir) could ...

CVE-2021-41864

CVE-2021-41864 affects the Linux kernel (pre-5.14.12) in prealloc_elems_and_freelist() within kernel/bpf/stackmap.c. An unprivileged local user can trigger an eBPF multiplication overflow, causing an out-of-bounds write and potential memory corruption or system crash. The issue is fixed in Linux ...

CVE-2021-46925

CVE-2021-46925 affects the Linux kernel’s net/smc: a race between smc_cdc_tx_handler() and smc_release() can lead to a use-after-free of smc_sock, causing a kernel panic when CDC messages are in flight. The root cause is a race where smc_cdc_tx_handler() may access a smc_sock that has already bee...

CVE-2021-46910

CVE-2021-46910 affects the Linux kernel ARM MM fixing path in kmap_local: when CONFIG_DEBUG_KMAP_LOCAL is enabled, per-CPU fixmap slots can grow and collide with the virtual DT mapping, potentially triggering an OOPS on systems with many CPUs. The disclosed remediation in the provided materials i...

CVE-2023-52441

CVE-2023-52441 affects the Linux kernel ksmbd component. The vulnerability is an out-of-bounds issue in init_smb2_rsp_hdr() that occurs when a client issues an SMB2 negotiate followed by SMB1 negotiate; the code could incorrectly treat SMB1 packets as SMB2, triggering an out-of-bounds path. The a...

CVE-2020-12888

CVE-2020-12888 affects the Linux kernel VFIO PCI driver (through 5.6.13) and arises from improper handling of accesses to disabled MMIO space. A local attacker or a guest VM with VFIO access could trigger a denial of service or crash by exploiting writes/reads to disabled memory regions. Connecte...

CVE-2021-46912

CVE-2021-46912 affects the Linux kernel where tcp_allowed_congestion_control was global/writable and leaked across net namespaces. The issue was that ipv4_net_table entries (tcp_available_congestion_control and tcp_allowed_congestion_control) had NULL data pointers and their proc handlers referen...

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-2026-43503

The CVE-2026-43503 entry concerns Linux kernel net/skbuff handling: when frags are moved by frag-transfer helpers (notably __pskb_copy_fclone() and skb_shift()), the SKBFL_SHARED_FRAG flag was not propagated to the destination skb, causing destination pages to remain shared while skb_has_shared_f...

CVE-2023-42754

CVE-2023-42754 is a vulnerability in the Linux kernel IPv4 stack: a NULL pointer dereference where skb may not be bound to a device before __ip_options_compile if the skb is re-routed by ipvs. The impact is a local crash under CAP_NET_ADMIN. Public details in connected advisories reaffirm the iss...

CVE-2022-1011

CVE-2022-1011: A use-after-free vulnerability in the Linux kernel FUSE implementation when a user triggers write(), enabling local privilege escalation. Affected component is the FUSE filesystem in the kernel; impact is unauthorized access to data from FUSE mounts and potential escalation. Connec...

CVE-2023-0386

CVE-2023-0386 describes a Linux kernel OverlayFS uid-mapping bug that lets a local user escalate privileges by improperly handling execution of setuid-capable files copied between mounts. Connected advisories confirm this CVE affecting upstream Linux kernel and note fixes via newer kernel package...

CVE-2022-2586

CVE-2022-2586 is a Linux kernel use-after-free in netfilter nf_tables related to nft objects/expressions referencing nft sets across tables. Connected Astra Linux advisories confirm the fix was applied by updating the kernel to address: netfilter nf_tables: do not allow SET_ID to refer to another...

CVE-2021-29154

CVE-2021-29154 affects the Linux kernel BPF JIT implementation (arch/x86 net/bpf_jit_comp.c and bpf_jit_comp32.c). Connected advisories (e.g., ALAS2KERNEL-5.4-2022-003) confirm a local privilege escalation due to incorrect computation of branch displacements in the BPF JIT, enabling arbitrary cod...

CVE-2023-52435

CVE-2023-52435 affects the Linux kernel’s net/ skb_segment() and can overflow MSS when computing mss = mss * partial_segs, risking a crash (e.g., GSO_BY_FRAGS) and triggering NULL pointer dereferences in some traces. The fix adds a guard to ensure the new MSS is smaller than GSO_BY_FRAGS, prevent...

CVE-2019-14835

The CVE-2019-14835 entry describes a buffer overflow in Linux kernel vhost functionality (virtqueue buffers translated to IOVs) during VM live migration. A privileged guest user could pass descriptors with invalid length while migration is underway, potentially causing a host privilege escalation...

CVE-2019-14283

CVE-2019-14283 affects the Linux kernel up to version 5.2.2, where floppy drive handling in set_geometry() in drivers/block/floppy.c fails to validate sect and head, enabling an integer overflow and out-of-bounds read. This can be triggered by an unprivileged local user when a floppy is present (...

CVE-2020-10732

CVE-2020-10732 describes a Linux Kernel flaw in the Userspace core dumps implementation. According to connected IBM bulletin entries, the issue: allows a local authenticated attacker to obtain sensitive information or cause a program crash by exploiting the core-dump handling path. The vulnerabil...

CVE-2022-0435

CVE-2022-0435 is a Linux kernel TIPc stack overflow issue. The vulnerability occurs in TIPc domain record handling when a peer sends a domain with more than 64 members, enabling a remote attacker with access to the TIPc network to crash the system and potentially escalate privileges. Connected ad...