Alertas de Seguridad de la Información

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64150] In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_inner: release l…

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_inner: release local_lock before re-enabling softirqs Quoting sashiko: In the error path, local_bh_enable() is called before local_unlock_nested_bh().

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64132] In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: refresh hdr pointer…

In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: refresh hdr pointer before ioam6_event() Reported by Sashiko: In ipv6_hop_ioam(), the hdr pointer is initialized to point into the skb's linear data buffer. Later, the code calls skb_ensure_writable(), which might reallocate the buffer: if (skb_ensure_writable(skb, optoff + 2 + hdr->opt_len)) goto drop; /* Tra…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64136] In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count i…

In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored cifs code to change cifs_tcp_ses_lock for tc_lock around tc_count changes. There was missing lock around tc_count increment inside smb2_find_smb_sess_tcon_unlocked().

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64125] In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: keep RBUF EEE/PM…

In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: keep RBUF EEE/PM disabled Setting RBUF_EEE_EN | RBUF_PM_EN in RBUF_ENERGY_CTRL breaks the RX path on GENET hardware once MAC EEE becomes active. RX traffic stops flowing while the link stays up and the usual descriptor/RX error counters remain quiet. In that state the MAC still accepts frames (rbuf_ovflow_cnt keep…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64122] In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free i…

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover mlx5e_tx_reporter_timeout_recover() accesses sq->netdev after mlx5e_safe_reopen_channels() has torn down and freed the channel (and its embedded SQs). Replace the three sq->netdev references with priv->netdev which is safe because priv outlives channel teardown. …

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64113] In the Linux kernel, the following vulnerability has been resolved: ixgbevf: fix use-after-free in …

In the Linux kernel, the following vulnerability has been resolved: ixgbevf: fix use-after-free in VEPA multicast source pruning ixgbevf_clean_rx_irq() prunes frames whose source MAC matches the VF's own address (VEPA multicast workaround) by freeing the skb and continuing to the next descriptor: dev_kfree_skb_irq(skb); continue; The skb pointer is declared outside the while loop and p…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64102] In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Reject MPA FPDU lengt…

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Reject MPA FPDU length underflow before signed receive math A malicious connected siw peer can send an iWARP FPDU whose MPA length field (c_hdr->mpa_len, 16 bit big-endian, peer-controlled) is smaller than the fixed DDP/RDMAP header for the announced opcode. Soft-iWARP parses the full header in siw_get_hdr() based on i…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64106] In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Reject re…

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits Userspace can restore an ITS Device Table Entry whose Size field encodes more EventID bits than the virtual ITS supports. The live MAPD path rejects that state, but vgic_its_restore_dte() accepts it and stores the out-of-range value in dev->num_eventid…

nvdcriticovulnerabilidad CVSS 9.0 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64089] In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: fix negative la…

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: fix negative last_changeset_len batadv_piv_tt::last_changeset_len len was declared as s16, but the field is never intended to hold a negative value. When a value greater than 32767 is assigned, it wraps to a negative signed integer. In batadv_send_my_tt_response(), last_changeset_len is temporarily widened to s3…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64091] In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: fix TOCTOU race…

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: fix TOCTOU race for reported vlans The local TT based TVLV is generated by first checking the number of VLANs which have at least one TT entry. A new buffer with the correct size for the VLANs is then allocated. Only then, the list of VLANs s used to fill the VLAN entries in the buffer. During this time, the mesh…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64080] In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Snapshot not…

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Snapshot notifier callbacks under lock Both notification handlers currently look up a notifier callback under notify_lock, drop the lock, and then dereference the returned notifier entry. A concurrent unregister can delete and free that entry in the gap, leaving the handler to dereference stale memory. Copy t…

nvdcriticovulnerabilidad CVSS 9.3 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64066] In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_read_to_pageca…

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_read_to_pagecache() to pause on subreq failure Fix netfs_read_to_pagecache() so that it pauses the generation of new subrequests if an already-issued subrequest fails.

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64067] In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing barriers whe…

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing barriers when accessing stream->subrequests locklessly The list of subrequests attached to stream->subrequests is accessed without locks by netfs_collect_read_results() and netfs_collect_write_results(), and then they access subreq->flags without taking a barrier after getting the subreq pointer from the list.…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64068] In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing locking arou…

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing locking around retry adding new subreqs Fix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take the appropriate lock when adding extra subrequests into stream->subrequests.

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64069] In the Linux kernel, the following vulnerability has been resolved: netfs: Fix cancellation of a DI…

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix cancellation of a DIO and single read subrequests When the preparation of a new subrequest for a read fails, if the subrequest has already been added to the stream->subrequests list, it can't simply be put and abandoned as the collector may see it. Also, if it hasn't been queued yet, it has two outstanding refs that …

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64056] In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Make RX…

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Make RX SKB per-port The SKB used to assemble packets from fragments in gmac_rx() is static local, but the Gemini has two ethernet ports, meaning there can be races between the ports on a bad day if a device is using both. Make the RX SKB a per-port variable and carry it over between invocations in the p…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64061] In the Linux kernel, the following vulnerability has been resolved: netfs: Fix early put of sink fo…

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix early put of sink folio in netfs_read_gaps() Fix netfs_read_gaps() to release the sink page it uses after waiting for the request to complete. The way the sink page is used is that an ITER_BVEC-class iterator is created that has the gaps from the target folio at either end, but has the sink page tiled over the middle…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64047] In the Linux kernel, the following vulnerability has been resolved: net: tls: fix off-by-one in sg_…

In the Linux kernel, the following vulnerability has been resolved: net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring When an sk_msg scatterlist ring wraps (sg.end < sg.start), tls_push_record() chains the tail portion of the ring to the head using sg_chain(). An extra entry in the sg array is reserved for this: struct sk_msg_sg { [...] /* The extra two …

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64055] In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Carry o…

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Carry over frag counter The gmac_rx() NAPI poll function assembles packets in an SKB from a ring buffer. If the ring buffer gets completely emptied during a poll cycle, we exit gmac_rx(), but the packet is not yet completely assembled in the SKB, yet the fragment counter frag_nr is reset to zero on the n…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64046] In the Linux kernel, the following vulnerability has been resolved: net: tls: prevent chain-after-c…

In the Linux kernel, the following vulnerability has been resolved: net: tls: prevent chain-after-chain in plain text SG Sashiko points out that if end = 0 (start != 0) the current code will create a chain link to content type right after the wrap link: This would create a chain where the wrap link points directly to another chain link. The scatterlist API sg_next iterator does not recurs…

nvdcriticovulnerabilidad CVSS 9.8 NVD