Alertas de Seguridad de la Información

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52967] In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infini…

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlink_data() On 32-bit architectures, the infinite loop is as follows: len = p->ErrorDataLength == 0xfffffff8 u8 *next = p->ErrorContextData + len next == p On 32-bit architectures, the out-of-bounds read is as follows: len = p->ErrorDataLength == 0xfffffff0 u…

nvdaltovulnerabilidad CVSS 8.1 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52968] In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table …

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and aen_host_forward() index the GAIT by manually multiplying the index with sizeof(struct zpci_gaite). Since aift->gait is already a struct zpci_gaite pointer, this double-scales the offset, a…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52969] In the Linux kernel, the following vulnerability has been resolved: KVM: Reject wrapped offset in k…

In the Linux kernel, the following vulnerability has been resolved: KVM: Reject wrapped offset in kvm_reset_dirty_gfn() kvm_reset_dirty_gfn() guards the gfn range with if (!memslot || (offset + __fls(mask)) >= memslot->npages) return; but offset is u64 and the addition is unchecked. The check can be silently bypassed by a u64 wrap. The dirty ring backing those entries is MAP_SHARED at KVM…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52971] In the Linux kernel, the following vulnerability has been resolved: net: ena: PHC: Fix potential us…

In the Linux kernel, the following vulnerability has been resolved: net: ena: PHC: Fix potential use-after-free in get_timestamp Move the phc->active check and resp pointer assignment to after acquiring the spinlock. Previously, phc->active was checked without holding the lock, and resp was cached from ena_dev->phc.virt_addr before the lock was acquired. If ena_com_phc_destroy() runs between th…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52973] In the Linux kernel, the following vulnerability has been resolved: futex: Drop CLONE_THREAD requir…

In the Linux kernel, the following vulnerability has been resolved: futex: Drop CLONE_THREAD requirement for private default hash alloc Currently need_futex_hash_allocate_default() depends on strict pthread semantics, abusing CLONE_THREAD. This breaks the non-concurrency assumptions when doing the mm->futex_ref pcpu allocations, leading to bugs[0] when sharing the mm in other ways; ie: BUG…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52974] In the Linux kernel, the following vulnerability has been resolved: net: tls: fix strparser anchor …

In the Linux kernel, the following vulnerability has been resolved: net: tls: fix strparser anchor skb leak on offload RX setup failure When tls_set_device_offload_rx() fails at tls_dev_add(), the error path calls tls_sw_free_resources_rx() to clean up the SW context that was initialized by tls_set_sw_offload(). This function calls tls_sw_release_resources_rx() (which stops the strparser via tls…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52959] In the Linux kernel, the following vulnerability has been resolved: virt: sev-guest: Do not use hos…

In the Linux kernel, the following vulnerability has been resolved: virt: sev-guest: Do not use host-controlled page order in cleanup path When issuing an extended guest request (SVM_VMGEXIT_EXT_GUEST_REQUEST), get_ext_report() allocates a buffer to retrieve a certificate blob from the host, keeping track of its size in report_req->certs_len. However, the host may return SNP_GUEST_VMM_ERR_INVAL…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52960] In the Linux kernel, the following vulnerability has been resolved: ceph: put folios not suitable f…

In the Linux kernel, the following vulnerability has been resolved: ceph: put folios not suitable for writeback The batch holds references to the folios (see `filemap_get_folios`, `folio_batch_release`), so we need to `folio_put` the folios we remove. Tested on v6.18.

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52962] In the Linux kernel, the following vulnerability has been resolved: ceph: fix a buffer leak in __ce…

In the Linux kernel, the following vulnerability has been resolved: ceph: fix a buffer leak in __ceph_setxattr() The old_blob in __ceph_setxattr() can store ci->i_xattrs.prealloc_blob value during the retry. However, it is never called the ceph_buffer_put() for the old_blob object. This patch fixes the issue of the buffer leak.

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52950] In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: fix UAF with re…

In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: fix UAF with retry loop Retry doesn't work here, since bo will be freed on error, leading to UAF. However, now that we do the alloc & init before the attach, we can now combine this as one unit and have the init do the alloc for us. This should make the retry safe. Reported by Sashiko. v2: Fix up the error unwi…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52951] In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: handle empty bo…

In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: handle empty bo and UAF races There look to be some nasty races here when triggering the invalidate_mappings hook: 1) We do xe_bo_alloc() followed by the attach, before the actual full bo init step in xe_dma_buf_init_obj(). However the bo is visible on the attachments list after the attach. This is bad si…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52952] In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARN_ON in __iommu_g…

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARN_ON in __iommu_group_set_domain_nofail() due to reset In __iommu_group_set_domain_internal(), concurrent domain attachments are rejected when any device in the group is recovering. This is necessary to fence concurrent attachments to a multi-device group where devices might share the same RID due to PCI DMA alias …

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52953] In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix oops due to out…

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix oops due to out of scope access Below oops triggers when kill QEMU process: Oops: general protection fault, probably for non-canonical address 0x7fffffff844eaaa7: 0000 [#1] SMP NOPTI Call Trace: do_raw_spin_lock+0xaa/0xc0 _raw_spin_lock_irqsave+0x21/0x40 domain_remove_dev_pasid+0x52/0x160 …

nvdaltovulnerabilidad CVSS 7.1 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52954] In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertio…

In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decode_choose_args() A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain choose_args that get decoded in decode_choose_args(). In this function, num_choose_arg_maps is read from the message, and a correspo…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52956] In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-b…

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in __ceph_x_decrypt() In __ceph_x_decrypt(), a part of the buffer p is interpreted as a ceph_x_encrypt_header, and the magic field of this struct is accessed. This happens without any guarantee that the buffer is large enough to hold this struct. The function parameter ciphertext_len r…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52957] In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential null-ptr…

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential null-ptr-deref in decode_choose_args() A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. When decoding this CRUSH map in crush_decode(), an array of max_buckets CRUSH buckets is decoded, where some indices may not refer to actual buckets and are therefore set to NULL.…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52945] In the Linux kernel, the following vulnerability has been resolved: Revert "wireguard: device: enab…

In the Linux kernel, the following vulnerability has been resolved: Revert "wireguard: device: enable threaded NAPI" This reverts commit 933466fc50a8e4eb167acbd0d8ec96a078462e9c which is commit db9ae3b6b43c79b1ba87eea849fd65efa05b4b2e upstream. We have had three independent production user reports in combination with Cilium utilizing WireGuard as encryption underneath that k8s Pod E/W traffic t…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52946] In the Linux kernel, the following vulnerability has been resolved: fs/fcntl: fix SOFTIRQ-unsafe lo…

In the Linux kernel, the following vulnerability has been resolved: fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling A SOFTIRQ-safe to SOFTIRQ-unsafe lock order deadlock can occur in send_sigio() and send_sigurg() when a process group receives a signal. When FASYNC is configured for a process group (PIDTYPE_PGID), both functions use read_lock(&tasklist_lock) to traverse the task list…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52947] In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix refcount saturat…

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove In qrtr_port_remove(), the socket reference count is decremented via __sock_put() before the port is removed from the qrtr_ports XArray and before the RCU grace period elapses. This breaks the fundamental RCU update paradigm. It exposes a race window where…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52943] In the Linux kernel, the following vulnerability has been resolved: net: skbuff: fix missing zeroco…

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: fix missing zerocopy reference in pskb_carve helpers pskb_carve_inside_header() and pskb_carve_inside_nonlinear() both copy the old skb_shared_info header into a new buffer via memcpy(), which includes the destructor_arg pointer (uarg) for MSG_ZEROCOPY skbs. Neither function calls net_zcopy_get() for the new shinfo,…

nvdaltovulnerabilidad CVSS 7.8 NVD