Alertas de Seguridad de la Información

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53259] In the Linux kernel, the following vulnerability has been resolved: ipv6: anycast: insert aca into …

In the Linux kernel, the following vulnerability has been resolved: ipv6: anycast: insert aca into global hash under idev->lock syzbot reported a splat [1]: a slab-use-after-free in ipv6_chk_acast_addr(), which walks the global inet6_acaddr_lst[] hash under RCU and dereferences a struct ifacaddr6 that has already been freed while still linked in the hash, so a later reader walks into a dangling …

nvdaltovulnerabilidad CVSS 7.8 NVD

L Crítico vulnerabilidad

25/06/2026

[CVE-2026-53260] In the Linux kernel, the following vulnerability has been resolved: tcp: Add preempt_{disable,enabl…

In the Linux kernel, the following vulnerability has been resolved: tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req(). syzbot reported a weird reqsk->rsk_refcnt underflow in __inet_csk_reqsk_queue_drop(). The captured reqsk_put() in __inet_csk_reqsk_queue_drop() is called only when it successfully removes reqsk from ehash. Moreover, reqsk_timer_handler() calls another reqsk_…

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53242] In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list …

In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams snd_pcm_drain() uses init_waitqueue_entry which does not clear entry.prev/next, and add_wait_queue with a conditional remove_wait_queue that is skipped when to_check is no longer in the group after concurrent UNLINK. The orphaned wait entry remains o…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53244] In the Linux kernel, the following vulnerability has been resolved: VFS: fix possible failure to un…

In the Linux kernel, the following vulnerability has been resolved: VFS: fix possible failure to unlock in nfsd4_create_file() atomic_create() in fs/namei.c drops the reference to the dentry when it returns an error. This behaviour was imported into dentry_create() so that it will drop the reference if an error is returned from atomic_create(), though not if vfs_create() returns an error (in the…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Crítico vulnerabilidad

25/06/2026

[CVE-2026-53246] In the Linux kernel, the following vulnerability has been resolved: sctp: validate cached peer INIT…

In the Linux kernel, the following vulnerability has been resolved: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing When a listening SCTP server processes a COOKIE_ECHO chunk, the cached peer INIT chunk embedded after the cookie is parsed and its parameters are later walked by sctp_process_init() using sctp_walk_params(). However, the chunk header length of this cached IN…

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Crítico vulnerabilidad

25/06/2026

[CVE-2026-53247] In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: Fix…

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown mtk_free_dev() calls metadata_dst_free() which frees the metadata_dst with kfree() immediately, bypassing the RCU grace period. In the RX path, skb_dst_set_noref() sets a non-refcounted pointer from the skb to the metadata_dst. This function requires RCU rea…

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53248] In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix use-after-free…

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix use-after-free in metadata dst teardown airoha_metadata_dst_free() runs metadata_dst_free() which frees the metadata_dst with kfree() immediately, bypassing the RCU grace period. In the RX path, skb_dst_set_noref() sets a non-refcounted pointer from the skb to the metadata_dst. This function requires RCU read-si…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53250] In the Linux kernel, the following vulnerability has been resolved: xsk: cache csum_start/csum_offs…

In the Linux kernel, the following vulnerability has been resolved: xsk: cache csum_start/csum_offset to fix TOCTOU in xsk_skb_metadata() The TX metadata area resides in the UMEM buffer which is memory-mapped and concurrently writable by userspace. In xsk_skb_metadata(), csum_start and csum_offset are read from shared memory for bounds validation, then read again for skb assignment. A malicious …

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53232] In the Linux kernel, the following vulnerability has been resolved: net: phy: clean the sfp upstrea…

In the Linux kernel, the following vulnerability has been resolved: net: phy: clean the sfp upstream if phy probing fails Sashiko reported that we don't call sfp_bus_del_upstream() in the probe failure path, so let's add it, otherwise the sfp-bus is left with a dangling 'upstream' field, that may be used later on during SFP events. This issue existed before the generic phylib sfp support, back …

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53233] In the Linux kernel, the following vulnerability has been resolved: netdev: fix double-free in netd…

In the Linux kernel, the following vulnerability has been resolved: netdev: fix double-free in netdev_nl_bind_rx_doit() Sashiko flags that genlmsg_reply() always consumes the skb. The error path calls nlmsg_free(rsp) so we can't jump directly to it. Let's not unbind, just propagate the error to the user. This is the typical way of handling genlmsg_reply() failures. They shouldn't happen unless u…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53234] In the Linux kernel, the following vulnerability has been resolved: net: ibm: emac: Fix use-after-f…

In the Linux kernel, the following vulnerability has been resolved: net: ibm: emac: Fix use-after-free during device removal The driver was using devm_register_netdev() which causes unregister_netdev() to be deferred until the devres cleanup phase, which runs after emac_remove() returns. This creates a use-after-free window where: 1. emac_remove() is called, which tears down hardware (cancels w…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53235] In the Linux kernel, the following vulnerability has been resolved: net: add pskb_may_pull() to skb…

In the Linux kernel, the following vulnerability has been resolved: net: add pskb_may_pull() to skb_gro_receive_list() skb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without first ensuring the data is in the linear area via pskb_may_pull(). When the skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in page fragments) while skb_gro_offset is non-zero (after IP+TCP …

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53239] In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-fre…

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() Fix the race by pruning the bin while still holding xfrm_policy_lock, before dropping it. Use __xfrm_policy_inexact_prune_bin() directly since the lock is already held. The wrapper xfrm_policy_inexact_prune_bin() becomes unused and is removed. Race: C…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53240] In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix use-after-free…

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload __input_process_payload() stores first_skb into xtfs->ra_newskb under drop_lock when starting partial reassembly, then unlocks and breaks out of the processing loop. The post-loop check reads xtfs->ra_newskb without the lock to decide whether first_skb is st…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53223] In the Linux kernel, the following vulnerability has been resolved: net: guard timestamp cmsgs to r…

In the Linux kernel, the following vulnerability has been resolved: net: guard timestamp cmsgs to real error queue skbs skb_is_err_queue() treats PACKET_OUTGOING as the sole marker for an skb from sk_error_queue. That assumption is not true for AF_PACKET sockets: outgoing packet taps are also delivered to packet sockets with skb->pkt_type == PACKET_OUTGOING, but their skb->cb is owned by AF_PACK…

nvdaltovulnerabilidad CVSS 7.1 NVD

L Crítico vulnerabilidad

25/06/2026

[CVE-2026-53224] In the Linux kernel, the following vulnerability has been resolved: sctp: validate embedded INIT ch…

In the Linux kernel, the following vulnerability has been resolved: sctp: validate embedded INIT chunk and address list lengths in cookie sctp_unpack_cookie() only checked that the embedded INIT chunk length did not exceed the remaining cookie payload, but did not ensure that the INIT chunk is large enough to contain a complete INIT header. A malformed COOKIE_ECHO can therefore carry a truncate…

nvdcriticovulnerabilidad CVSS 9.1 NVD

L Crítico vulnerabilidad

25/06/2026

[CVE-2026-53225] In the Linux kernel, the following vulnerability has been resolved: sctp: fix uninit-value in __sct…

In the Linux kernel, the following vulnerability has been resolved: sctp: fix uninit-value in __sctp_rcv_asconf_lookup() __sctp_rcv_asconf_lookup() in net/sctp/input.c only checks that the ASCONF chunk can hold the ADDIP header and a parameter header, then calls af->from_addr_param(), which reads the full address (16 bytes for IPv6) trusting the parameter's declared length. An unauthenticated p…

nvdcriticovulnerabilidad CVSS 9.1 NVD

L Crítico vulnerabilidad

25/06/2026

[CVE-2026-53228] In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 he…

In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6_tunnel_xmit() caches the inner IPv6 header pointer at function entry and continues using it after iptunnel_handle_offloads(). For GSO skbs, iptunnel_handle_offloads() calls skb_header_unclone(). When the skb header is cloned, skb_header_unclone() can call pskb_expand_…

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53229] In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix DMA and xdp…

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure In the XSK branch of mlx5e_xmit_xdp_buff(), when sq->xmit_xdp_frame() returns false (e.g. XDPSQ is full), the function returns without unmapping the DMA address or freeing the xdp_frame allocated by xdp_convert_zc_to_xdp_frame(). The xdpi_fifo push only happens on…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53230] In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix slab-out-of-bound…

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list mlx5_query_nic_vport_mac_list() sizes its firmware command buffer using the PF's log_max_current_uc/mc_list capabilities. When querying a VF vport with a larger configured max (via devlink), the firmware response can overflow this buffer: BUG: KASAN: slab-out-of…

nvdaltovulnerabilidad CVSS 8.7 NVD