Alertas de Seguridad de la Información

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89954] In the Linux kernel, the following vulnerability has been resolved: mtd: afs: validate v2 image inf…

In the Linux kernel, the following vulnerability has been resolved: mtd: afs: validate v2 image info bounds The AFS v2 parser uses footer[8] to locate the image information block inside the current erase block, then uses the image information region_count to walk entries from a fixed local array. The footer offset and region count come from flash contents and are not checked against the erase bl…

nvdaltovulnerabilidad CVSS 8.0 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89947] In the Linux kernel, the following vulnerability has been resolved: clk: meson: align gxbb_32k_clk_…

In the Linux kernel, the following vulnerability has been resolved: clk: meson: align gxbb_32k_clk_sel number of parents with actual count The following out-of-bounds read has been observed by Christian on a GXBB WeTek Hub: ================================================================== BUG: KASAN: global-out-of-bounds in __clk_register+0x1b70/0x2418 Read of size 8 at addr ffffd66320cf88e0 by…

nvdaltovulnerabilidad CVSS 8.0 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89938] In the Linux kernel, the following vulnerability has been resolved: iio: chemical: atlas-sensor: us…

In the Linux kernel, the following vulnerability has been resolved: iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF The atlas driver requests its hardware data-ready IRQ with devm_request_threaded_irq(); its threaded handler queues an irq_work, atlas_work_handler(), that calls iio_trigger_poll(data->trig). The IRQ is devm-managed, so free_irq() runs from the devres …

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89940] In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Tie IIO dma fence …

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Tie IIO dma fence lock lifetime to the fence The `iio_dma_fence` implementation currently uses a lock embedded in the `iio_dmabuf_priv`. But the `iio_dma_fence` can outlive the `iio_dmabuf_priv`, which can cause a use-after-free. Tie the lifetime of the lock to the lifetime of the fence by embedding them in the sam…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89941] In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Make IIO DMA fence…

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Make IIO DMA fence release RCU-safe The `dma_fence` documentation states that if a custom release implementation is provided, the `dma_fence` object must be freed in an RCU-safe way. The current `iio_dma_fence` implementation uses `kfree()`, which might result in a use-after-free. Remove the custom `release` implem…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89942] In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Fix potential use-…

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Fix potential use-after-free in anonymous buffer release An anonymous buffer handle holds a reference to the underlying IIO device. The reference is dropped in the buffer handle's release function. If the device has been removed, either through unbind or hot-unplug, the buffer handle might hold the last reference. …

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89943] In the Linux kernel, the following vulnerability has been resolved: ASoC: loongson: Fix error handl…

In the Linux kernel, the following vulnerability has been resolved: ASoC: loongson: Fix error handling in ACPI property parsing In loongson_card_parse_acpi(), the return value of device_property_read_string() for the `codec-dai-name` property was ignored. If the property is missing or invalid, an uninitialized pointer would be used later, potentially leading to undefined behavior. Fix this by c…

nvdaltovulnerabilidad CVSS 8.4 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89928] In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Consume the locke…

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk __kvm_rmap_lock() deliberately elides the rmap lock when it observes an empty rmap. In that case kvm_rmap_lock_readonly() also re-enables preemption and returns zero, so the caller holds neither the rmap lock nor a preemption reference. The elision documents…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89929] In the Linux kernel, the following vulnerability has been resolved: KVM: nVM: Ensure INVVPID is emu…

In the Linux kernel, the following vulnerability has been resolved: KVM: nVM: Ensure INVVPID is emulated on the correct physical CPU When emulating INVVPID, KVM executes INVVPID on the physical CPU using vpid02 (instead of the L1 assigned VPID), after doing some validations on the operands. However, it is possible that the physical CPU KVM executes INVVPID on is different from the CPU L2 is runn…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89932] In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 …

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always flush vpid02 on first use Make sure vpid02 is always flushed on first use by setting last_vpid=0 when allocating vpid02. nested_vmx_transition_tlb_flush() will always detect a VPID change on first VM-Enter after VMXON, because VPID=0 in vmcs12 is not allowed if L1 enables VPID. This avoids using stale TLB ent…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89920] In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruptio…

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in forwarding such machine checks into the guest. This also simplifies the machine check reinjection an…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89922] In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Take srcu when impor…

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Take srcu when importing watchpoint data __import_wp_info() backs up the original guest memory contents of a watchpoint with read_guest_abs(), which is kvm_read_guest() and therefore resolves the memslot via __kvm_memslots(). That requires kvm->srcu (or kvm->slots_lock) to be held, otherwise a concurrent memslot updat…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89927] In the Linux kernel, the following vulnerability has been resolved: KVM: x86: hyper-v: Clamp stimer…

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: hyper-v: Clamp stimer deadline to avoid livelock Fix an issue where userspace or the guest can program an Hyper-V synthetic timer to have a deadline in the past via integer overflow, preventing the CPU from making progress and triggering an RCU stall. Hyper-V's SynIC exposes 4 per-vCPU synthetic timers to the guest, w…

nvdaltovulnerabilidad CVSS 7.1 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89910] In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix uninitializ…

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix uninitialized stack variable issue with dmsintc Variable vector[] is declared on stack in function dmsintc_inject_irq() and sometimes it is used without initialized. Here fix this issue.

nvdaltovulnerabilidad CVSS 7.3 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89911] In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI …

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means it is pretty easy for a guest to generate an overflow should the hypervisor be naive enough to add the…

nvdaltovulnerabilidad CVSS 7.9 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89912] In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Don't der…

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save MAPC with V=0 drops ite->collection but leaves the ITE on the device's ITT list, and vgic_its_save_ite() dereferences it unconditionally. A guest that issues MAPD, MAPTI and then MAPC(V=0) therefore oopses the host when the VMM issues KVM_DEV_ARM_ITS_SAVE_TABL…

nvdaltovulnerabilidad CVSS 7.1 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89913] In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-v3: take an LP…

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-v3: take an LPI reference in vgic_v3_save_pending_tables vgic_v3_save_pending_tables() iterates dist->lpi_xa using xa_for_each() and dereferences the returned struct vgic_irq in the loop body without holding a reference on the LPI. The xarray iterator only provides temporary RCU coverage while looking up the cu…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89919] In the Linux kernel, the following vulnerability has been resolved: KVM: s390: keyop: use mmu_lock …

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: keyop: use mmu_lock to read gmap->asce Every other dat_* consumer in this file (kvm_s390_get_skeys, set_skeys, get_cmma_bits, set_cmma_bits, MEM_CLR_CMMA, kvm_s390_fixup_prefix, kvm_test_age_gfn, kvm_age_gfn) reads kvm->arch.gmap->asce *inside* the mmu_lock read-side. keyop is the only outlier. gmap->asce is mutated …

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89902] In the Linux kernel, the following vulnerability has been resolved: LoongArch: Avoid preempt count …

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Avoid preempt count underflow without probe LoongArch uses break 11 for the breakpoint placed after an instruction that Kprobes executes out of line. Since userspace can issue the same break instruction, do_bp() can reach kprobe_singlestep_handler() when there is no current probe. The handler actually returns false i…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89903] In the Linux kernel, the following vulnerability has been resolved: LoongArch: Do not save/restore …

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Do not save/restore percpu base register in rethook trampoline The rethook trampoline saves $r21 ($u0), the percpu base, into its frame at entry and restores it at exit. Inbetween rethook_trampoline_handler() may schedule via preempt_enable_notrace(). If the task migrates to another CPU, the frame's $r21 holds the ol…

nvdaltovulnerabilidad CVSS 7.8 NVD