Alertas de Seguridad de la Información

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53091] In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdisc_pkt_…

In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdisc_pkt_len_segs_init() Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head. net/core/tso.c users are particularly at risk, because tso_build_hdr() does a memcpy(hdr, skb->data, hdr_len); qdisc_pkt_len_segs_init() already does a dissection of gso packets. Use pskb_may…

nvdaltovulnerabilidad CVSS 8.4 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53092] In the Linux kernel, the following vulnerability has been resolved: bpf: Fix linked reg delta track…

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix linked reg delta tracking when src_reg == dst_reg Consider the case of rX += rX where src_reg and dst_reg are pointers to the same bpf_reg_state in adjust_reg_min_max_vals(). The latter first modifies the dst_reg in-place, and later in the delta tracking, the subsequent is_reg_const(src_reg)/reg_const_value(src_reg) rea…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53094] In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stale offload->prog po…

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stale offload->prog pointer after constant blinding When a dev-bound-only BPF program (BPF_F_XDP_DEV_BOUND_ONLY) undergoes JIT compilation with constant blinding enabled (bpf_jit_harden >= 2), bpf_jit_blind_constants() clones the program. The original prog is then freed in bpf_jit_prog_release_other(), which updates aux…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53096] In the Linux kernel, the following vulnerability has been resolved: bpf: Use RCU-safe iteration in …

In the Linux kernel, the following vulnerability has been resolved: bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path The DEVMAP_HASH branch in dev_map_redirect_multi() uses hlist_for_each_entry_safe() to iterate hash buckets, but this function runs under RCU protection (called from xdp_do_generic_redirect_map() in softirq context). Concurrent writers (__dev_map_hash_update_elem, …

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53097] In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix use-aft…

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work() When the mt7996 pci chip is detaching, the mt7996_crash_data is released in mt7996_coredump_unregister(). However, the work item dump_work may still be running or pending, leading to UAF bugs when the already freed crash_data is dereferenced again in mt7996_ma…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53081] In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce regsafe base id co…

In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce regsafe base id consistency for BPF_ADD_CONST scalars When regsafe() compares two scalar registers that both carry BPF_ADD_CONST, check_scalar_ids() maps their full compound id (aka base | BPF_ADD_CONST flag) as one idmap entry. However, it never verifies that the underlying base ids, that is, with the flag stripped…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53085] In the Linux kernel, the following vulnerability has been resolved: bpf: fix mm lifecycle in open-c…

In the Linux kernel, the following vulnerability has been resolved: bpf: fix mm lifecycle in open-coded task_vma iterator The open-coded task_vma iterator reads task->mm locklessly and acquires mmap_read_trylock() but never calls mmget(). If the task exits concurrently, the mm_struct can be freed as it is not SLAB_TYPESAFE_BY_RCU, resulting in a use-after-free. Safely read task->mm with a trylo…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Crítico vulnerabilidad

24/06/2026

[CVE-2026-53086] In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix racing timeo…

In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix racing timeout handler The bcmgenet_timeout handler tries to take down all tx queues when a single queue times out. This is over zealous and causes many race conditions with queues that are still chugging along. Instead lets only restart the timed out queue.

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53087] In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix leaking free…

In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix leaking free_bds While reclaiming the tx queue we fast forward the write pointer to drop any data in flight. These dropped frames are not added back to the pool of free bds. We also need to tell the netdev that we are dropping said data.

nvdaltovulnerabilidad CVSS 7.5 NVD

L Crítico vulnerabilidad

24/06/2026

[CVE-2026-53088] In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix off-by-one i…

In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix off-by-one in bcmgenet_put_txcb The write_ptr points to the next open tx_cb. We want to return the tx_cb that gets rewinded, so we must rewind the pointer first then return the tx_cb that it points to. That way the txcb can be correctly cleaned up.

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53072] In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix locking in hci_c…

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER When protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() calls hci_connect_cfm(conn) without hdev->lock. Generally hci_connect_cfm() assumes it is held, and if conn is deleted concurrently -> UAF. Only SCO and ISO set HCI_PROTO_DEFER and only for defer setu…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53075] In the Linux kernel, the following vulnerability has been resolved: ppp: require CAP_NET_ADMIN in t…

In the Linux kernel, the following vulnerability has been resolved: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls /dev/ppp open is currently authorized against file->f_cred->user_ns, while unattached administrative ioctls operate on current->nsproxy->net_ns. As a result, a local unprivileged user can create a new user namespace with CLONE_NEWUSER, gain CAP_NET_ADMIN only in t…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53076] In the Linux kernel, the following vulnerability has been resolved: bpf: Fix OOB in pcpu_init_value…

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix OOB in pcpu_init_value An out-of-bounds read occurs when copying element from a BPF_MAP_TYPE_CGROUP_STORAGE map to another pcpu map with the same value_size that is not rounded up to 8 bytes. The issue happens when: 1. A CGROUP_STORAGE map is created with value_size not aligned to 8 bytes (e.g., 4 bytes) 2. A pcpu m…

nvdaltovulnerabilidad CVSS 7.1 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53077] In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB…

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces.

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53078] In the Linux kernel, the following vulnerability has been resolved: bpf: Fix same-register dst/src …

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops When a BPF sock_ops program accesses ctx fields with dst_reg == src_reg, the SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the destination register in the !fullsock / !locked_tcp_sock path. Both macros borrow a temporary register to check is_f…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53069] In the Linux kernel, the following vulnerability has been resolved: net, bpf: fix null-ptr-deref in…

In the Linux kernel, the following vulnerability has been resolved: net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master syzkaller reported a kernel panic in bond_rr_gen_slave_id() reached via xdp_master_redirect(). Full decoded trace: https://syzkaller.appspot.com/bug?extid=80e046b8da2820b6ba73 bond_rr_gen_slave_id() dereferences bond->rr_tx_counter, a per-CPU counter that …

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53070] In the Linux kernel, the following vulnerability has been resolved: sctp: disable BH before calling…

In the Linux kernel, the following vulnerability has been resolved: sctp: disable BH before calling udp_tunnel_xmit_skb() udp_tunnel_xmit_skb() / udp_tunnel6_xmit_skb() are expected to run with BH disabled. After commit 6f1a9140ecda ("add xmit recursion limit to tunnel xmit functions"), on the path: udp(6)_tunnel_xmit_skb() -> ip(6)tunnel_xmit() dev_xmit_recursion_inc()/dec() must stay bala…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53071] In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing c…

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp l2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding l2cap_chan_lock(). Every other l2cap_chan_del() caller in the file acquires the lock first. A remote BLE device can send a crafted L2CAP ECRED reconfiguration response to corrupt the channel list whil…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53062] In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: fix missin…

In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: fix missing locks in invalidating cache blocks In passthrough mode, the policy invalidate_mapping operation is called simultaneously from multiple workers, thus it should be protected by a lock. Otherwise, we might end up with data races on the allocated blocks counter, or even use-after-free issues with int…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53067] In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-ep-msi: Fix …

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-ep-msi: Fix error unwind and prevent double alloc pci_epf_alloc_doorbell() stores the allocated doorbell message array in epf->db_msg/epf->num_db before requesting MSI vectors. If MSI allocation fails, the array is freed but the EPF state may still point to freed memory. Clear epf->db_msg and epf->num_db on t…

nvdaltovulnerabilidad CVSS 7.8 NVD