linux kernel

CVE-2026-23113: A Small io_uring Fix With Outsized Implications for Linux Stability Linux kernel maintainers have landed yet another reminder that small-looking concurrency fixes can carry large operational consequences. CVE-2026-23113, described as “io_uring/io-wq: check IO_WQ_BIT_EXIT inside...

The Microsoft Security Response Center page for CVE-2026-23207 appears to be unavailable, but the underlying issue is a Linux kernel flaw in the spi: tegra210-quad driver that was resolved by protecting a curr_xfer null check inside an IRQ handler. In practical terms, that means a race condition...

The CVE page for CVE-2026-23227 is currently unavailable, so the only reliable starting point is the upstream kernel fix description: “drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free.” That wording points to a concurrency bug in the...

In early 2026, CVE-2026-23110 became a good example of how security researchers, patch trackers, and enterprise defenders can end up chasing the same bug through very different windows of visibility. The vulnerability itself is straightforward enough on the surface: it is a Linux kernel...

Linux’s TCP stack is getting a subtle but meaningful hardening change in CVE-2026-23247, a fix that restores port-based entropy to TCP timestamp offsets after a prior design change reduced them to per-host values. The issue matters because the timestamp offset can leak information across...

The Linux kernel’s perf subsystem has a new security-flavored bug fix on the table: CVE-2026-23248, described as a refcount bug and potential use-after-free in perf_mmap. The Microsoft Security Response Center entry currently returns a not-found page, but the title itself is enough to tell a...

CVE-2026-23244 is a good example of how a vulnerability label can point far beyond a single vendor page and into the broader mechanics of Linux storage reliability, kernel allocation behavior, and the sometimes opaque path from bug report to security fix. The Microsoft Security Response Center...

The recent RDMA/siw kernel fix for a potential NULL pointer dereference is a small patch with outsized relevance for anyone running software iWARP in Linux-based infrastructure. The bug lives in the receive path, where an error condition could leave qp->rx_fpdu unset and still allow later code...

CVE-2026-23233 is a Linux kernel vulnerability in F2FS that can cause the filesystem to map the wrong physical blocks for a swapfile, potentially leading to data corruption, boot hangs, or dm-verity failures on affected systems. The issue was published through Microsoft’s vulnerability guidance...

The Linux kernel received a targeted fix in February 2026 for a subtle but real arithmetic bug in the virtio VSOCK transport that can let a remote peer cause the kernel to believe far more transmit credit is available than it actually is, with practical consequences for host and guest...

A subtle locking bug in the kernel's RxRPC recvpath can corrupt internal socket queues and lead to use-after-free and refcount underruns — a flaw tracked as CVE-2026-23066 that was introduced by incorrect requeue logic in rxrpc_recvmsg() and fixed upstream by a targeted patch in early 2026...

A subtle but important Linux kernel race condition in the espintcp TCP‑encapsulation code has been assigned CVE‑2026‑23239 and quietly landed fixes across the kernel trees: the patch replaces a cancel_work_sync() call with disable_work_sync() in espintcp_close() to prevent a worker from touching...

The Linux kernel entry for CVE-2026-23236 closes a small but important memory‑handling bug in the legacy fbdev driver for the SMSC UFX USB framebuffer (smscufx): the UFX_IOCTL_REPORT_DAMAGE ioctl did not copy user-provided data into kernel memory safely and instead directly referenced user...

A small, surgical fix to the Linux kernel’s ROMFS loader was published this month after syzbot detected a mount-time path that could leave the kernel trying to perform I/O with an oversized block size and trigger a BUG that crashes the system; the issue is tracked as CVE-2026-23238 and has been...

The Linux kernel received a small but important defensive patch that closes CVE-2026-23237 — a NULL-pointer robustness bug in the Classmate laptop (cmpc) platform driver — by adding defensive checks to several sysfs and input paths, preventing a kernel oops that could otherwise be triggered if...

A subtle but important vulnerability in the Linux kernel’s Flash-Friendly File System (F2FS) — tracked as CVE-2026-23235 — was disclosed and fixed in early March 2026. The root cause is a mismatch between how certain F2FS sysfs attributes are represented in kernel data structures and how the...

A compact but consequential fix for the Linux kernel’s Flash-Friendly File System (F2FS) has closed a use‑after‑free (UAF) race in the f2fs_write_end_io() path, closing a window that could let asynchronous write completions touch freed filesystem state. The issue, tracked as CVE‑2026‑23234 and...

A newly assigned Linux kernel vulnerability, CVE-2026-23217, exposes a subtle but serious deadlock risk on RISC‑V systems when the kernel’s function tracer (ftrace) is configured to snapshot SBI ecall functions — a situation that can hang the entire system. The fix merged into the kernel trees...

The Linux kernel received a narrowly scoped but operationally meaningful security fix this week: a resource-accounting leak in the in‑kernel SMB server (ksmbd) was corrected to ensure the per‑transport connection counter active_num_conn is decremented on connection setup failures, closing...

The Linux kernel received a small but important fix for a scatterlist allocation error in the OMAP crypto driver that was tracked as CVE-2026-23222; the bug caused kmalloc_array() to allocate an array of pointers rather than an array of scatterlist objects, producing an allocation that was four...