CVE-2026-43499

The CVE-2026-43499 issue concerns the Linux kernel rtmutex path where remove_waiter() operated on current during dequeue in rt_mutex_start_proxy_lock() via futex_requeue(). This caused: (1) rbtree dequeue without waiter::task::pi_lock, (2) waiter task pi_blocked_on not cleared (dangling pointer, ...

CVE-2026-31431

CVE-2026-31431 is a local privilege escalation in the Linux kernel’s algif_aead/AF_ALG path. The root cause is an in-place operation bug in the AEAD handling, which can be exercised via AF_ALG sockets with the authencesn algorithm and splice() to corrupt the kernel page cache of readable files wi...

CVE-2026-46331

CVE-2026-46331 affects the Linux kernel net/sched pedit action (tcf_pedit_act). The root cause is an incorrect copy-on-write (COW) range calculation: skb_ensure_writable() was called once before the key loop using tcfp_off_max_hint, which does not account for runtime header offsets added by typed...

CVE-2026-46242

Summary (CVE-2026-46242) : The Linux kernel contains a fix for a UAF in eventpoll related to ep_remove. The bug arose when ep_remove_file() cleared file->f_ep under file->f_lock but continued using @file inside the critical section, allowing a concurrent path to reach freed memory via f_op-...

CVE-2026-43284

Summary of CVE-2026-43284 (Linux kernel): The issue occurs in ESP decryption for UDP paths when using shared skb frags. Specifically, after MSG_SPLICE_PAGES attaches pages to an skb, and SKBFL_SHARED_FRAG is set, ESP input could decrypt in place on data not privately owned by the skb, if the frag...

CVE-2026-64600

The CVE-2026-64600 issue affects the Linux kernel’s XFS implementation. The race arises when xfs_reflink_fill_{cow_hole,delalloc} cycle the ILOCK to obtain a transaction, leaving data fork and cow fork mappings stale after reacquiring the ILOCK. Specifically, the data fork mapping was not refresh...

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-2026-53359

CVE-2026-53359 is a KVM/x86 shadow MMU use-after-free caused by a role mismatch when reusing shadow pages during a nested walk. The flaw arises when a PDE is modified and a 4KB leaf SPTE is installed on the new path, but the parent 2MB page’s direct flag and the shadow page’s role may not align, ...

CVE-2026-46243

The CVE-2026-46243 entry concerns the Linux kernel CIFS client. It fixes a bug where cifs.spnego key descriptions could be created by userspace (via request_key(2) or add_key(2)) and include fields (pid, uid, creduid, upcall_target) that are treated as kernel-origin inputs. The fix restricts acce...

CVE-2026-46300

CVE-2026-46300 ("Fragnesia") is a local privilege escalation in the Linux kernel's ESP/XFRM (IPsec ESP-in-TCP) subsystem. The root cause is that skb_try_coalesce() fails to propagate the SKBFL_SHARED_FRAG marker when transferring paged fragments, causing ESP to skip skb_cow_data() and decrypt in ...

CVE-2026-46316

A vulnerability in Linux kernel KVM for ARM64 (vgic-its) is resolved. The issue stemmed from vgic_its_invalidate_cache() traversing the per-ITS translation cache with xa_for_each() and dropping the cache’s reference on each entry using vgic_put_irq(), but it dropped the reference of the pointer r...

CVE-2026-53362

CVE-2026-53362 is a Linux kernel vulnerability in the IPv6 subsystem. In __ip6_append_data(), when the paged-allocation branch is taken (via MSG_MORE or NETIF_F_SG), the fraggap is not accounted for in alloclen and pagedlen, causing a heap buffer overflow past skb->end into skb_shared_info. An...

CVE-2026-23111

CVE-2026-23111 (Linux kernel) : A bug in netfilter nf_tables nft_map_catchall_activate() inverted the genmask check, causing catchall elements to be processed incorrectly during abort of a DELSET operation. The function skipped inactive elements and processed active ones, leading to a use-after-f...

CVE-2026-43500

Summary: CVE-2026-43500 affects the Linux kernel RXRPC path for DATA/RESPONSE packets. The issue occurs when skb fragments are externally owned (e.g., via splice() or frag lists) and the code path decrypts in place, binding frag pages into the AEAD/skcipher SGL. The fix extends the gate to unshar...

CVE-2026-22998

CVE-2026-22998 affects the Linux kernel’s NVMe over Fabrics NVMe-TCP path. The issue is a NULL pointer dereference in nvmet_tcp_build_pdu_iovec triggered by H2C_DATA PDUs when command data structures are uninitialized or partially initialized. Specifically, nvmet_tcp_handle_h2c_data_pdu() could p...

CVE-2026-43038

CVE-2026-43038 affects the Linux kernel IPv6 ICMP error path. A forged IPv4 ICMP error with CIPSO options could cause ip6_err_gen_icmpv6_unreach() to misinterpret an inner IPv4 inet_skb_parm as an IPv6 parameter, allowing an offset misreference (dsthao) that could enable out-of-bounds or memory a...

CVE-2026-46333

CVE-2026-46333 concerns a logic bug in the Linux kernel’s ptrace access check (__ptrace_may_access). When a thread lacks an MM pointer, ptrace_may_access uses a cached “last dumpable” flag, which can be bypassed by CAP_SYS_PTRACE to override. This can enable local privilege escalation or informat...

CVE-2026-53163

CVE-2026-53163 affects the Linux kernel rtmutex/futex path. The issue arises when task_blocks_on_rt_mutex() fails to arm the waiter on deadlock detection, leaving waiter->task nil, and the code path can reach remove_waiter() via rt_mutex_start_proxy_lock(). The root cause is tied to how the wa...

CVE-2026-43037

CVE-2026-43037 affects the Linux kernel; vulnerability arises from ip4ip6_err() using a cloned skb where the IPv6 receive path writes cb[] as inet6_skb_parm, which is then misinterpreted as IPv4 inet_skb_parm by __ip_options_echo(), causing a potential data leak/compromise. The fix includes clear...

CVE-2026-53264

CVE-2026-53264 concerns the Linux kernel’s networking scheduler (net/sched) where a race between simultaneous NEWTFILTER and DELFILTER operations can lead to a use-after-free of an action. The provided description and patches state that final freeing of the action was incorrectly performed withou...

CVE-2026-53361

The CVE-2026-53361 vulnerability affects the Linux kernel, specifically af_unix code in unix_gc() where gc_in_progress could be observed as false during scheduling, potentially allowing a sequence where gc_in_progress is not reliably set. The root cause is the race between unix_schedule_gc() and ...

CVE-2026-52923

The CVE-2026-52923 issue affects the Linux kernel IPC ID allocation in the checkpoint/restore path. ipc_idr_alloc() forwards the next_id request to idr_alloc() with an open-ended upper bound, so if the valid SysV IPC id tail is full the allocation can spill past ipc_mni. The encoded id may then r...

CVE-2026-23268

CVE-2026-23268 is a Linux kernel AppArmor issue where an unprivileged local user can load, replace, and remove AppArmor profiles by abusing apparmorfs and passing a file descriptor to a privileged process. This enables a confused deputy attack, potentially letting the unprivileged user execute a ...

CVE-2026-52924

The CVE-2026-52924 entry describes a Linux kernel SCTP use-after-free vulnerability triggered during Stale COOKIE-ECHO handling. In COOKIE_WAIT transitions, sctp_stream_update() can leave a stale out_curr pointer after rolling back from COOKIE_ECHOED to COOKIE_WAIT, so scheduler paths (FCFS/RR/PR...

CVE-2026-23401

The Linux kernel contains a vulnerability within the KVM subsystem related to x86/mmu shadow page table entry handling. Specifically, the system fails to drop/zap existing present SPTEs before installing emulated MMIO SPTEs when host userspace modifies a shadowed gPTE to switch from a memslot to ...

CVE-2026-46135

CVE-2026-46135 affects the Linux kernel nvmet-tcp (NVMe over TCP). A race between ICReq handling and target‑side queue teardown can transition queue state in a non‑serialized way, potentially allowing a second teardown path and a re‑entry after a disconnect, including a possible double free scena...

CVE-2026-31419

Summary of CVE-2026-31419 : A use-after-free in the Linux kernel bonding driver is caused by a race in bond_xmit_broadcast() where the last slave determination can change during RCUs, leading to double-free of the original skb and a potential crash. The fix replaces the racy bond_is_last_slave() ...

CVE-2026-46215

The CVE concerns a race condition in the Linux kernel’s DRM change_handle path. A concurrent gem_close could remove one handle while another remained dangling, enabling a use-after-free. The fix uses the same sequence as gem_close: first replace the old handle with NULL via idr_replace, then, if ...

CVE-2026-31402

CVE-2026-31402 affects the Linux kernel NFSv4.0 server (nfsd) via the LOCK replay cache. A large lock owner in a denied LOCK can cause a slab-out-of-bounds write into the 112-byte replay buffer, corrupting adjacent heap memory. The issue can be triggered remotely by two cooperating NFSv4.0 client...

CVE-2026-53366

CVE-2026-53366 affects the Linux kernel IPv4 path. In __ip_append_data(), the paged-allocation branch miscomputed alloclen/pagedlen due to fraggap carried from the previous skb, causing the linear area to be undersized. The patch corrects this by adding the fraggap to alloclen and subtracting it ...

CVE-2026-53302

The CVE-2026-53302 issue is in the Linux kernel cryptographic module (EIP93 hardware accelerator). The root cause is in eip93_hmac_setkey(): it allocates a temporary ahash transform for HMAC key material using a driver name (e.g., sha256-eip93) but masks CRYPTO_ALG_ASYNC, which excludes async alg...

CVE-2026-53002

The CVE-2026-53002 entry documents a vulnerability in the Linux kernel’s netfilter/conntrack code. Root cause: use of sprintf with inadequate buffer handling in mangle_content_len(), leading to a potential stack-out-of-bounds write (KASAN). The fix replaces sprintf with scnprintf and increases th...

CVE-2026-46195

The CVE-2026-46195 entry concerns a Linux kernel SMB client vulnerability. 32-bit servers can supply a crafted dacloffset that wraps a DACL pointer, allowing dereferencing of DACL fields during chmod/chown if validated only after pointer arithmetic. The flaw occurs in parse_sec_desc(), build_sec_...

CVE-2026-43198

CVE-2026-43198 is a Linux kernel race in IPv6 TCP socket handling. The issue occurs in tcp_v6_syn_recv_sock() where the child socket becomes visible before IPv6 state is initialized, allowing other CPUs to access it and potentially triggering instability. The fix moves the problematic code into t...

CVE-2026-53215

CVE-2026-53215 affects the Linux kernel mvpp2 driver: the RX path could return a descriptor buffer to the hardware Buffer Manager after it had been handed to XDP or an skb, allowing DMA into memory no longer owned by the RX ring. Root cause is improper handling of RX buffers in mvpp2_rx_refill() ...

CVE-2026-46054

CVE-2026-46054 affects the Linux kernel SELinux overlayfs access checks for mmap() and mprotect(). The issue arises from insufficient enforcement of backing-file access between the user file and backing file, potentially bypassing policies. A patch introduces security_mmap_backing_file() to enfor...

CVE-2026-31671

The CVE-2026-31671 issue is in the Linux kernel xfrm_user component. A struct xfrm_user_report includes a __u8 proto field followed by a struct xfrm_selector, creating three padding bytes that were never zeroed before copying to userspace. The vulnerability is a information leak caused by these u...

CVE-2026-46319

The CVE-2026-46319 entry describes a race in the Linux kernel net/sched act_ct where rcu_read_lock is exited before refcount_inc_not_zero on ct_ft, allowing a UAF when ct_ft is freed during cleanup. This creates a local privilege-escalation risk as an attacker could observe or trigger the race wi...

CVE-2026-46116

CVE-2026-46116 affects the Linux kernel xfrm subsystem (xfrm_state). The root cause is a local-use-after-free in __xfrm_state_delete due to unsafe deletions from byseq/byspi hash chains. The patch changes deletions to hlist_del_init_rcu and uses hlist_unhashed() checks, preventing writes after LI...

CVE-2026-23270

CVE-2026-23270 pertains to the Linux kernel net/sched subsystem. The fix restricts the use of TC action act_ct to only bind to clsact/ingress qdiscs and shared blocks, preventing its use on the egress path. The change addresses a scenario where classify could return TC_ACT_CONSUMED while the skb ...

CVE-2026-52986

The CVE-2026-52986 issue affects the Linux kernel netfilter nf_conntrack_sip module, where unsafe port parsing on non-NUL-terminated data allowed malformed SIP packets to affect conntrack processing. The fix introduces a dedicated sip_parse_port() that validates each digit against the buffer limi...

CVE-2026-31685

The connected Red Hat/SUSE/NVD entries confirm CVE-2026-31685 affects the Linux kernel netfilter component ip6t_eui64. The root cause is that eui64_mt6() derives a modified EUI-64 from the Ethernet source and compares it with the IPv6 low 64 bits, but the existing guard only rejects an invalid MA...

CVE-2026-46244

The CVE-2026-46244 issue affects the Linux kernel netfilter nft_inner path. In nft_inner_parse_l2l3(), while handling inner IPv6 packets, ipv6_find_hdr() computes the transport header offset correctly across extension headers, but the code later overwrites this value with nhoff + sizeof(_ip6h) (4...

CVE-2026-46275

CVE-2026-46275 affects the Linux kernel Bluetooth hci_uart subsystem, with Use-After-Free and race conditions in lifecycle teardown (init/close paths) that can trigger UAFs and NPDs when workqueues and protocol paths are torn down. The documented fix involves reordering ttys close handling (clear...

CVE-2026-46266

Summary (CVE-2026-46266): In the Linux kernel, RAW sockets using IPPROTO_RAW (255) could be triggered by a malicious incoming ICMP packet that sets the protocol field to 255 and matches a RAW socket, causing undesired FNHE cache changes. This issue has been resolved in updates cited across multip...

CVE-2026-43074

CVE-2026-43074 affects the Linux kernel eventpoll code. The vulnerability arises from ep_free() freeing the eventpoll structure while still in use by another thread, creating a use-after-free (UAF). The fix defers kfree() of the epi->ep struct to an RCU grace period to prevent UAF; multiple so...

CVE-2026-46113

CVE-2026-46113 (Linux kernel KVM x86 shadow paging use-after-free) is a resolved vulnerability in the KVM shadow paging path. The issue arises when the shadow MMU computes GFNs for direct shadow pages using sp->gfn plus the SPTE index and guest page-table modifications between VM entries can c...

CVE-2026-23271

CVE-2026-23271 affects the Linux kernel perf subsystem. The vulnerability arises from a race between __perf_event_overflow() and perf_remove_from_context() where __perf_event_overflow() may run with only preemption disabled for some callchains, allowing a race against perf_event_exit_event() and ...

CVE-2026-31670

Summary: CVE-2026-31670 affects the Linux kernel rfkill subsystem. The vulnerability allows a local attacker to create an unbounded number of rfkill events (without consuming them from the rfkill descriptor), potentially leading to memory exhaustion and DoS. The issue is fixed by bounding the num...

CVE-2026-52993

Summary (CVE-2026-52993): In the Linux kernel TIPC module, a double-free flaw occurs in tipc_buf_append() when tipc_msg_validate() reallocates an skb and the code incorrectly frees the original skb. The root cause is that the validation path may free a previously freed skb if reallocation occurs,...