linux kernel

A newly disclosed Linux-kernel vulnerability in the Steam HID driver (tracked as CVE‑2025‑21923) can cause a use‑after‑free during device detachment — a memory‑safety bug that has been fixed upstream but still demands immediate attention from operators who run kernels in the affected release...

The RapidIO networking patch recorded as CVE-2025-21934 fixes a small but consequential memory-management mistake in the Linux kernel that, under certain failure conditions, could leave a RapidIO port structure pointing at freed memory — a classic use-after-free that translates into a...

The Linux kernel has received a small but important correction tracked as CVE-2025-21922: a KMSAN-detected uninitialized-value issue in the PPP driver that can be triggered by crafted BPF (Berkeley Packet Filter) socket filters. While the immediate technical problem is a two‑byte header that the...

The Linux kernel scheduler received a surgical but important fix in early April 2025 that closes a subtle pointer-conversion bug in the fair scheduler’s leaf-list handling — a defect tracked as CVE-2025-21919 that can produce memory corruption and unpredictable system behavior if left unpatched...

A subtle mistake in the Linux USB driver stack has been quietly corrected — and the fix exposes a classic kernel problem: an erroneous decrement of a platform device reference count in the DesignWare Core USB3 (dwc3) ST driver that can lead to use‑after‑free and service loss. The vulnerability...

The Linux kernel bug tracked as CVE-2024-45009 is a medium‑severity defect in the kernel’s Multipath TCP (MPTCP) path manager that can lead to incorrect counter handling during subflow removal. Microsoft’s public advisory language names Azure Linux as a product that “includes this open‑source...

A subtle null-pointer bug in the Linux kernel's DRM MSM/DPU display driver — tracked as CVE-2024-45015 — has been fixed upstream, and Microsoft’s public mapping currently lists Azure Linux as the only Microsoft product they have attested to include the affected open‑source component. That narrow...

A subtle race-condition bug in the Linux kernel’s fscache subsystem — tracked as CVE-2024-45000 — can allow the kernel to dereference a NULL pointer and crash, producing a denial-of-service condition on affected systems. The flaw stems from a missing check of the cookie access counter (the...

Microsoft’s short, one‑line attestation that “Azure Linux includes this open‑source library and is therefore potentially affected” is accurate — but it is a product‑scoped inventory statement, not a universal guarantee that no other Microsoft product contains the same vulnerable Linux kernel...

A race in the Linux bonding driver's IPsec offload path was closed this year after maintainers fixed a null-pointer dereference in bond_ipsec_offload_ok that could let a local, low‑privilege user crash an affected host — the patch corrects the function’s return type and adds an explicit check...

The Linux kernel fix for CVE-2024-44986 addresses a real, low-level IPv6 use‑after‑free (UAF) condition in ip6_finish_output2(), but Microsoft’s MSRC wording about Azure Linux being “the product that includes the open‑source library and is therefore potentially affected” is a product‑scoped...

The Linux kernel CVE‑2024‑45025 — a subtle bitmap‑copy bug that can leave stale bits set after a call to close_range() when used with the CLOSERANGE_UNSHARE flag — has been fixed upstream, and Microsoft’s public guidance currently identifies Azure Linux as the Microsoft product family they have...

Microsoft’s published advisory for CVE-2024-45006 confirms that the vulnerable code is an upstream Linux kernel xHCI bug and that Azure Linux is the Microsoft product Microsoft has identified so far as “including this open‑source library and therefore potentially affected,” but that public...

The Linux kernel received a narrowly scoped but consequential fix in September 2024 for a defect in the memory controller code that could be triggered by an unprivileged local user to produce a kernel oops — the issue tracked as CVE-2024-45021 affects the memcg (memory cgroup) event-control path...

Microsoft’s CVE entry for CVE‑2024‑44998 correctly identifies a use‑after‑free bug in the Linux kernel’s ATM driver (idt77252) — but no, Azure Linux is not necessarily the only Microsoft product that can include the vulnerable code: multiple Linux kernels and Linux-based Microsoft offerings have...

A subtle correctness bug in the Linux kernel's Multipath TCP (MPTCP) path‑manager was fixed this year after selftests and syzbot triggered a counter underflow and related warnings that can lead to sustained availability loss for hosts that use MPTCP — tracked as CVE‑2024‑45010 and fixed in the...

CVE-2024-44974 is a Linux‑kernel Multipath TCP (MPTCP) use‑after‑free (UaF) defect in the MPTCP path manager that was fixed upstream in 2024 — and Microsoft’s public advisory language naming Azure Linux as a product that “includes this open‑source library and is therefore potentially affected”...

A recently disclosed Linux kernel vulnerability in the Netfilter flowtable code can let malformed VLAN-tagged packets drive the kernel into reading uninitialized memory and, in some cases, crash networking stacks — a high‑priority fix that administrators must treat as operationally urgent...

A small, surgical change in the Linux kernel’s Distributed Switch Architecture (DSA) driver tree — a single added call to free a PHY device reference — has been cataloged as CVE-2024-44971 and carries an outsized operational meaning for network hosts that use the Broadcom Starfighter‑2 (bcm_sf2)...

A subtle NULL‑check omission in the Linux kernel’s AMD GPU display code (drm/amd/display) — tracked as CVE‑2024‑26648 — has been fixed upstream after maintainers discovered that the function edp_setup_replay() dereferenced internal structures before verifying pointer validity, creating a...