Alertas de Seguridad de la Información

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64015] In the Linux kernel, the following vulnerability has been resolved: security/keys: fix missed RCU r…

In the Linux kernel, the following vulnerability has been resolved: security/keys: fix missed RCU read section on lookup Nicholas Carlini reports that the keyring code calls assoc_array_find() in find_key_to_update() without holding the RCU read lock, while the assoc_array_gc() code really is designed around removing the node from the tree and then freeing it after an RCU grace-period. The regu…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64005] In the Linux kernel, the following vulnerability has been resolved: net/smc: Do not re-initialize s…

In the Linux kernel, the following vulnerability has been resolved: net/smc: Do not re-initialize smc hashtables INIT_HLIST_HEAD(&smc_v*_hashinfo.ht) are called after smc_nl_init(), proto_register() and sock_register(). This can lead to smc_v*_hashinfo.ht being reset even though hash entries already exist and are being used, possibly resulting in a corrupted list. Remove unnecessary and dangero…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63994] In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers a…

In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() Sashiko found that iptunnel_pmtud_build_icmp() and iptunnel_pmtud_build_icmpv6() were caching ip_hdr() and ipv6_hdr() before an skb_cow() call which can reallocate skb->head. Fix this possible UAF by initializing the local variables after the skb_c…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63979] In the Linux kernel, the following vulnerability has been resolved: net/handshake: hand off the pin…

In the Linux kernel, the following vulnerability has been resolved: net/handshake: hand off the pinned file reference to accept_doit handshake_req_next() removes the request from the per-net pending list and drops hn_lock before handshake_nl_accept_doit() reads req->hr_sk->sk_socket and dereferences sock->file (once in FD_PREPARE() and again in get_file()). In that window a consumer running tls…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63978] In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending re…

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Drain pending requests at net namespace exit The arguments to list_splice_init() in handshake_net_exit() are reversed. The call moves the local empty "requests" list onto hn->hn_requests, leaving the local list empty, so the subsequent drain loop runs zero iterations. Pending handshake requests that had not yet be…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63968] In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loo…

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6_select_path() Found while auditing the same pattern Sashiko reported in rt6_fill_node() [1]. Apply the same fix as commit f8d8ce1b515a ("ipv6: fix possible infinite loop in fib6_info_uses_dev()"). Writers holding tb6_lock can list_del_rcu(&first->fib6_siblings) without waiting for RCU re…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63954] In the Linux kernel, the following vulnerability has been resolved: hpfs: fix a crash if hpfs_map_d…

In the Linux kernel, the following vulnerability has been resolved: hpfs: fix a crash if hpfs_map_dnode_bitmap fails If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on uninitialized quad buffer head, causing a crash.

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63950] In the Linux kernel, the following vulnerability has been resolved: mm/rmap: initialize nr_pages to…

In the Linux kernel, the following vulnerability has been resolved: mm/rmap: initialize nr_pages to 1 at loop start in try_to_unmap_one Initialize nr_pages to 1 at the start of each loop iteration, like folio_referenced_one() does. Without this, nr_pages computed by a previous folio_unmap_pte_batch() call can be reused on a later iteration that does not run folio_unmap_pte_batch() again. mmap …

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63940] In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Ignore Port I/O reque…

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Ignore Port I/O requests of length '0' Explicitly ignore Port I/O requests of length '0' (or count '0'), so that setting up the software scratch area (and other code) doesn't have to worry about underflowing the length, and to allow for WARNing on trying to configure the scratch area with len==0.

nvdcriticovulnerabilidad CVSS 9.3 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63942] In the Linux kernel, the following vulnerability has been resolved: parport: Fix race between port …

In the Linux kernel, the following vulnerability has been resolved: parport: Fix race between port and client registration The parport subsystem registers port devices before they are fully initialised, resulting in a race condition where client drivers such as lp can attach to ports that are not completely initialised or even being torn down. When the port and client drivers are built as modul…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63913] In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: tcp: do n…

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state using an RST packet with an invalid sequence number. Specifically, after a SYN packet is observed, an RST with an invalid SEQ ca…

nvdaltovulnerabilidad CVSS 8.2 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63914] In the Linux kernel, the following vulnerability has been resolved: xfrm: route MIGRATE notificatio…

In the Linux kernel, the following vulnerability has been resolved: xfrm: route MIGRATE notifications to caller's netns xfrm_send_migrate() in net/xfrm/xfrm_user.c and pfkey_send_migrate() in net/key/af_key.c both hardcode &init_net for the multicast that announces a successful XFRM_MSG_MIGRATE / SADB_X_MIGRATE. XFRM_MSG_MIGRATE arrives on a per-netns NETLINK_XFRM socket, and the rest of the xf…

nvdaltovulnerabilidad CVSS 7.3 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-2026-63911] 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-2026-63883] 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-2026-63879] 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-2026-63863] In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Fix unbalanced unlo…

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Fix unbalanced unlock in drm_gpusvm_scan_mm() There is a unbalanced lock/unlock to gpusvm notifier lock: [ 931.045868] ===================================== [ 931.046509] WARNING: bad unlock balance detected! [ 931.047149] 6.19.0-rc6+xe-**************** #9 Tainted: G U [ 931.048150] --------------------------…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-63866] In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid …

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link routine.

nvdaltovulnerabilidad CVSS 8.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-63857] In the Linux kernel, the following vulnerability has been resolved: net: airoha: Do not read uninit…

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit() The transmit loop in airoha_dev_xmit() reads fragment address and length during its final iteration, when the loop index equals skb_shinfo(skb)->nr_frags, at which point the fragment data is uninitialized. While these values are never consumed, the read…

nvdcriticovulnerabilidad CVSS 9.8 NVD