Alertas de Seguridad de la Información

M Crítico vulnerabilidad

16/09/2026

[CVE-2026-89972] In the Linux kernel, the following vulnerability has been resolved: nvme: add missing SRCU grace pe…

In the Linux kernel, the following vulnerability has been resolved: nvme: add missing SRCU grace period in error path nvme_alloc_ns() error path at out_unlink_ns removes ns from the namespace head siblings list with list_del_rcu(&ns->siblings) but does not wait for SRCU readers before freeing the namespace struct. Multipath code iterates the head->list under srcu_read_lock() in nvme_find_path() …

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89957] In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix hot-unplug sk…

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix hot-unplug skipped when last AP adapter or domain removed The vfio_ap_mdev_hot_unplug_cfg() function uses the return value of bitmap_andnot() to determine whether the guest APCB needs to be updated. However, bitmap_andnot() returns false when the resulting destination bitmap is empty. This means that if the onl…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89959] In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix control domai…

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove The vfio_ap_config_remove function uses the bitmap_andnot function to clear bits from the matrix_mdev->matrix.adm bitmap (specifies the control domains assigned to the mdev). This prevents the explicitly unplugged control domains from being removed the KVM guest…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89960] In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fix stale pqap_ho…

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fix stale pqap_hook pointer on error in vfio_ap_mdev_set_kvm() In vfio_ap_mdev_set_kvm(), kvm->arch.crypto.pqap_hook is set to &matrix_mdev->pqap_hook before the update locks are acquired and the mdev list is checked for a conflicting assignment. If another mdev is already attached to the same KVM instance, the fun…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89961] In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: fix wrong addr_pfn …

In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: fix wrong addr_pfn tracking in compound vmemmap population vmemmap_populate_compound_pages() uses addr_pfn to determine the PFN offset within a compound page and to decide whether the current vmemmap slot should be populated as a head page mapping or should reuse a tail page mapping. However, addr_pfn is advanced ma…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

16/09/2026

[CVE-2026-89951] In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix stale receive d…

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix stale receive device on merged fragments Fragment reassembly reuses the skb from the highest-numbered buffered fragment as the merged packet. When that fragment was received on a hard interface which is deleted before the chain completes, the merged skb can re-enter the receive path with a stale skb->dev and skb_…

nvdaltovulnerabilidad CVSS 8.8 NVD

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 Crítico vulnerabilidad

16/09/2026

[CVE-2026-89930] In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Service local TLB fl…

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Service local TLB flushes on failed nested VM-Enter KVM services local TLB flushes on "full" nested VM-Exits (through __nested_vmx_vmexit()), but not if a nested VM-Enter fails (e.g. due to failed VMCS checks in nested_vmx_enter_non_root_mode()). However, it is possible that KVM had queued TLB flushes that need to be…

nvdcriticovulnerabilidad CVSS 9.3 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