Alertas de Seguridad de la Información

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64041] In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: fs210x: fix possi…

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: fs210x: fix possible buffer overflow In fs210x_effect_scene_info(), a string was copied like this: strscpy(DST, SRC, strlen(SRC) + 1); A buffer overflow would happen if strlen(SRC) >= sizeof(DST). Actually, strscpy() must be used this way: strscpy(DST, SRC, sizeof(DST)); strscpy(DST, SRC); // default…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64042] In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Check BAR resources b…

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Check BAR resources before exporting a DMABUF A DMABUF exports access to BAR resources and, although they are requested at startup time, we need to ensure they really were reserved before exporting. Otherwise, it's possible to access unreserved resources through the export. Add a check to the DMABUF-creation path.

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64044] In the Linux kernel, the following vulnerability has been resolved: ovpn: respect peer refcount in …

In the Linux kernel, the following vulnerability has been resolved: ovpn: respect peer refcount in CMD_NEW_PEER error path ovpn_nl_peer_new_doit()'s error path calls ovpn_peer_release() directly rather than ovpn_peer_put(), bypassing the kref. The accompanying comment ("peer was not yet hashed, thus it is not used in any context") holds for UDP but not for TCP. For UDP, the ovpn_socket union us…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64045] In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - use cached peer poi…

In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - use cached peer pointer in ovpn_tcp_close() ovpn_tcp_close() loads the ovpn_socket via rcu_dereference_sk_user_data() under rcu_read_lock(), takes a reference on sock->peer, caches the peer pointer in a local, and drops the read lock. It then passes sock->peer (rather than the cached local) to ovpn_peer_del(), re-der…

nvdaltovulnerabilidad CVSS 8.4 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

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64030] In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check li…

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check link_id in ieee80211_ml_epcs IEEE80211_MLE_STA_EPCS_CONTROL_LINK_ID is 0x000f, so link_id extracted from a PRIO_ACCESS ML element PER_STA_PROFILE subelement can be 0..15. sdata->link[] has IEEE80211_MLD_MAX_NUM_LINKS (15) entries (indices 0..14), making index 15 out-of-bounds. A connected WiFi 7 AP …

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64031] In the Linux kernel, the following vulnerability has been resolved: erofs: fix managed cache race f…

In the Linux kernel, the following vulnerability has been resolved: erofs: fix managed cache race for unaligned extents After unaligned compressed extents were introduced, the following race could occur: [Thread 1] [Thread 2] (z_erofs_fill_bio_vec) ... filemap_add_folio (1) …

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64032] In the Linux kernel, the following vulnerability has been resolved: bridge: mcast: Fix a possible u…

In the Linux kernel, the following vulnerability has been resolved: bridge: mcast: Fix a possible use-after-free when removing a bridge port When per-VLAN multicast snooping is enabled, the bridge iterates over all the bridge ports, disables the per-port multicast context on each port and enables the per-{port, VLAN} multicast contexts instead. The reverse happens when per-VLAN multicast snoopin…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64033] In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs: Fix use-after-free i…

In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs: Fix use-after-free in path file creation cleanup In the error path of rtrs_srv_create_path_files(), the sysfs root folders may already have been created and srv_path->kobj may already have been initialized. If a later step fails, the cleanup currently calls kobject_put(&srv_path->kobj) before rtrs_srv_destroy_once_sys…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64034] In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix TOCTOU double-fe…

In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer In mana_hwc_rx_event_handler(), resp->response.hwc_msg_id is read from DMA-coherent memory and bounds-checked, then mana_hwc_handle_resp() re-reads the same field from the same DMA buffer for test_bit() and pointer arithmetic. DMA-coherent memory is mapped uncache…

nvdcriticovulnerabilidad CVSS 9.3 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64035] In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type for SMD…

In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type for SMD frames Sashiko pointed out that igc_fpe_init_smd_frame() initializes igc_tx_buffer fields for an SMD skb, but does not set the buffer type: https://sashiko.dev/#/patchset/20260415025226.114115-1-kohei%40enjuk.jp Since igc_tx_buffer entries are reused, a stale XDP or XSK type can remain and make T…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64036] In the Linux kernel, the following vulnerability has been resolved: cgroup/rstat: validate cpu befo…

In the Linux kernel, the following vulnerability has been resolved: cgroup/rstat: validate cpu before css_rstat_cpu() access css_rstat_updated() is exposed as a BPF kfunc and accepts a caller-provided cpu argument. The function uses cpu for per-cpu rstat lookups without checking whether it refers to a valid possible CPU. A BPF iter/cgroup program with CAP_BPF and CAP_PERFMON can pass an invalid…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64037] In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: fix TSO seg…

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled When the TLC notification disables AMSDU for a TID, the MLD driver sets max_tid_amsdu_len to the sentinel value 1. The TSO segmentation path in iwl_mld_tx_tso_segment() checks for zero but not for this sentinel, allowing it to reach the num_subframes calcu…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64020] In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix dma_vecs leak on …

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix dma_vecs leak on p2p memory We don't unmap P2P memory, so we don't need to track it. The dma_vec allocation was getting leaked on the completion.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64023] In the Linux kernel, the following vulnerability has been resolved: gpio: aggregator: fix a potenti…

In the Linux kernel, the following vulnerability has been resolved: gpio: aggregator: fix a potential use-after-free On error we free aggr->lookups->dev_id before removing the entry from the lookup table. If a concurrent thread calls gpiod_find() before we remove the entry, it could iterate over the list and call gpiod_match_lookup_table() which unconditionally dereferences dev_id when calling s…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64024] In the Linux kernel, the following vulnerability has been resolved: tcp: fix stale per-CPU tcp_tw_i…

In the Linux kernel, the following vulnerability has been resolved: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction Blamed commit moved the TIME_WAIT-derived ISN from the skb control block to a per-CPU variable, assuming the value would always be consumed by tcp_conn_request() for the same packet that wrote it. That assumption is violated by multiple drop paths between the produce…

nvdcriticovulnerabilidad CVSS 9.4 NVD

M Crítico vulnerabilidad

19/07/2026

[CVE-2026-64025] In the Linux kernel, the following vulnerability has been resolved: bpf, skmsg: fix verdict sk_data…

In the Linux kernel, the following vulnerability has been resolved: bpf, skmsg: fix verdict sk_data_ready racing with ktls rx sk_psock_strp_data_ready() already checks tls_sw_has_ctx_rx() and defers to psock->saved_data_ready when a TLS RX context is present, avoiding a conflict with the TLS strparser's ownership of the receive queue (commit e91de6afa81c, "bpf: Fix running sk_skb program types w…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64026] In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix DATA decrypt vs spli…

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix DATA decrypt vs splice() by copying data to buffer in recvmsg This improves the fix for CVE-2026-43500. Fix the pagecache corruption from in-place decryption of a DATA packet transmitted locally by splice() by getting rid of the packet sharing in the I/O thread and unconditionally extracting the packet content into a…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64027] In the Linux kernel, the following vulnerability has been resolved: net: shaper: rework the VALID m…

In the Linux kernel, the following vulnerability has been resolved: net: shaper: rework the VALID marking (again) Recent commit changed the semantics from NOT_VALID to VALID. I didn't realize that the flags are not stored atomically with the entry in XArray. There's still a race of reader observing a VALID mark for a slot, getting interrupted, writer replacing the entry with a different one, rea…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

19/07/2026

[CVE-2026-64029] In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Serialize UMP output…

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Serialize UMP output teardown with event_input seq_ump_process_event() borrows client->out_rfile.output without synchronizing with the first-open and last-close transition in seq_ump_client_open() and seq_ump_client_close(). The last output unuse can therefore drop opened[STR_OUT] to zero and release the rawmidi file…

nvdaltovulnerabilidad CVSS 7.8 NVD