Alertas de Seguridad de la Información

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63917] In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6_tnl.net in vt…

In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6_tnl.net in vti6_changelink(). ip netns add ns1 ip netns add ns2 ip -n ns1 link add vti6_test type vti6 remote ::1 local ::2 key 7 ip -n ns1 link set vti6_test netns ns2 ip -n ns2 link set vti6_test type vti6 remote ::3 local ::4 key 9 ip netns del ns2 ip netns del ns1 [ 132.495484] ------------[ cut here ]----…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63918] In the Linux kernel, the following vulnerability has been resolved: l2tp: use refcount_inc_not_zero…

In the Linux kernel, the following vulnerability has been resolved: l2tp: use refcount_inc_not_zero in l2tp_session_get_by_ifname A reader in l2tp_session_get_by_ifname() can return a pointer to a session whose refcount has reached zero. The getter takes its reference with plain refcount_inc(), but every other session getter in the same file (l2tp_v2_session_get, l2tp_v3_session_get, and the cor…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63906] In the Linux kernel, the following vulnerability has been resolved: usb: musb: omap2430: Fix use-af…

In the Linux kernel, the following vulnerability has been resolved: usb: musb: omap2430: Fix use-after-free in omap2430_probe() In omap2430_probe(), of_node_put(np) is called prematurely before the last access to np, leading to a use-after-free if the node's reference count drops to zero. Move the of_node_put() calls after the last use of np in both the success and error paths.

nvdaltovulnerabilidad CVSS 8.4 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63909] In the Linux kernel, the following vulnerability has been resolved: ksmbd: OOB read regression in s…

In the Linux kernel, the following vulnerability has been resolved: ksmbd: OOB read regression in smb_check_perm_dacl() ACE-walk loops Commit d07b26f39246 ("ksmbd: require minimum ACE size in smb_check_perm_dacl()") introduced a transposed bounds check: if (offsetof(struct smb_ace, sid) + aces_size < CIFS_SID_BASE_SIZE) Since offsetof(..sid) is 8 and CIFS_SID_BASE_SIZE is 8, this evaluates…

nvdaltovulnerabilidad CVSS 8.1 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63910] In the Linux kernel, the following vulnerability has been resolved: dma-buf: fix UAF in dma_buf_fd(…

In the Linux kernel, the following vulnerability has been resolved: dma-buf: fix UAF in dma_buf_fd() tracepoint Once FD_ADD() returns, the fd is live in the file descriptor table and a thread sharing that table can close() it before DMA_BUF_TRACE() runs. The close drops the last reference, __fput() frees the dma_buf, and the tracepoint then dereferences dmabuf to take dmabuf->name_lock -- slab-u…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63911] In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: reset runtime stat…

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: reset runtime state when cloning SAs iptfs_clone_state() clones the IPTFS mode data with kmemdup(). This copies runtime objects which must not be shared with the original SA, including the embedded sk_buff_head, hrtimers, spinlock, and in-flight reassembly/reorder state. If xfrm_state_migrate() fails after clone_st…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63889] In the Linux kernel, the following vulnerability has been resolved: scsi: scsi_transport_fc: Widen …

In the Linux kernel, the following vulnerability has been resolved: scsi: scsi_transport_fc: Widen FPIN pname walker counter to u32 An adjacent Fibre Channel fabric actor that can deliver an FPIN ELS frame to an lpfc or qla2xxx Linux initiator can trigger a non-return in the generic FC transport. This is not a local userspace or IP network path; the attacker must be able to inject fabric traffic…

nvdaltovulnerabilidad CVSS 8.1 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63893] In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u…

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u32 wrap in tb_property_entry_valid() entry->value is u32 and entry->length is u16; the sum is performed in u32 and wraps. A malicious XDomain peer can pick value = 0xffffff00, length = 0x100 so the sum 0x100000000 wraps to 0 and passes the > block_len check. tb_property_parse() then passes entry-…

nvdaltovulnerabilidad CVSS 8.1 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63894] In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: serialize DM…

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: serialize DMABUF cancel against request completion ffs_epfile_dmabuf_io_complete() calls usb_ep_free_request() on the completed request but leaves priv->req, the back-pointer that ffs_dmabuf_transfer() set on submission, pointing at the freed memory. A later FUNCTIONFS_DMABUF_DETACH ioctl or ffs_epfile_releas…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63881] In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability…

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger get_queue_ids() computes array_size = num_queues * sizeof(uint32_t), which could overflow on 32-bit size_t build. using array_size() instead, it saturates to SIZE_MAX on overflow. (cherry picked from commit 2d57a0475f085c08b49312dfd8edcb461845f285)

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63883] In the Linux kernel, the following vulnerability has been resolved: serial: qcom_geni: fix kfifo un…

In the Linux kernel, the following vulnerability has been resolved: serial: qcom_geni: fix kfifo underflow when flush precedes DMA completion IRQ When uart_flush_buffer() runs before the DMA completion IRQ is delivered, the following race can occur (all steps serialized by uart_port_lock): 1. DMA starts: tx_remaining = N, kfifo contains N bytes 2. DMA completes in hardware; IRQ is pending b…

nvdaltovulnerabilidad CVSS 7.3 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63884] In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in …

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in TTM object purge TLDR: The bo->ttm object might be changed by calling ttm_bo_validate(), move casting it to an i915_tt object later to actually get the right pointer. A user reported hitting the following bug under heavy use on DG2: [26620.095550] Oops: general protection fault, proba…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63885] In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between chang…

In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between change_handle and handle_delete drm_gem_change_handle_ioctl leaves the old handle live in the IDR during the window between spin_unlock(table_lock) and the final spin_lock(table_lock). A concurrent drm_gem_handle_delete on the old handle succeeds in this window, decrements handle_count to 0, and frees t…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63886] In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Validate C…

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Validate CHAP_R length before base64 decode chap_server_compute_hash() allocates client_digest as kzalloc(chap->digest_size) and then, for BASE64-encoded responses, passes chap_r directly to chap_base64_decode() without checking whether the input length could produce more than digest_size bytes of output. c…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63887] In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Bound iscs…

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf iscsi_encode_text_output() concatenates "key=value\0" records into login->rsp_buf, an 8192-byte kzalloc(MAX_KEY_VALUE_PAIRS) buffer allocated in iscsit_alloc_login_setup_buffer(). The three sprintf() call sites in this function (lines 1398, 1411, 1424 in v7…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63888] In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix CRC ov…

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() Two latent bugs in the Text-phase handler, both present since the original LIO integration in commit e48354ce078c ("iscsi-target: Add iSCSI fabric support for target v4.1"): 1) DataDigest CRC buffer overread (4 bytes past text_in). text_in is …

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63875] In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache wh…

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When huge_pmd_unshare() is called to unshare a PMD table, the tlb_unshare_pmd_ptdesc() function sets tlb->unshared_tables=true but the aarch64 tlb_flush() only checked tlb->freed_tables to determine whether to use TLBF_NONE (vae1is, invalidates walk cache) or TLBF_NOWALKCACH…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63879] In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix amdgpu_hmm_rang…

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix amdgpu_hmm_range_get_pages The notifier sequence must only be read once or otherwise we could work with invalid pages. While at it also fix the coding style, e.g. drop the pre-initialized return value and use the common define for 2G range. (cherry picked from commit c08972f555945cda57b0adb72272a37910153390)

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63872] In the Linux kernel, the following vulnerability has been resolved: esp: fix page frag reference le…

In the Linux kernel, the following vulnerability has been resolved: esp: fix page frag reference leak on skb_to_sgvec failure In esp_output_tail(), when esp->inplace is false, the old skb page frags are replaced with a new page from the xfrm page_frag cache. The source scatterlist (sg) is built from the old frags before the replacement, and esp_ssg_unref() is responsible for releasing the old pa…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63874] In the Linux kernel, the following vulnerability has been resolved: net: mctp: usb: fix race betwee…

In the Linux kernel, the following vulnerability has been resolved: net: mctp: usb: fix race between urb completion and rx_retry cancellation It's possible that sequencing between setting ->stopped and cancelling the rx_retry work (in ndo_stop) could leave us with an urb queued: T1: ndo_stop T2: rx_retry_work ------------ ---------------- …

nvdaltovulnerabilidad CVSS 7.8 NVD