Alertas de Seguridad de la Información

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64418] In the Linux kernel, the following vulnerability has been resolved: mm: shrinker: fix shrinker_info…

In the Linux kernel, the following vulnerability has been resolved: mm: shrinker: fix shrinker_info teardown race with expansion expand_shrinker_info() iterates all visible memcgs under shrinker_mutex, including memcgs that have not finished ->css_online() yet. Once pn->shrinker_info has been published, teardown must stay serialized with expand_shrinker_info() until that memcg is either fully o…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64387] In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query director…

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query directory replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent t…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64388] In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp wit…

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership (chown) and group (chgrp) modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFS_MOUNT_CIFS_ACL or CIFS_MOUNT_MODE_FROM_SID were also explicitly set. Fix this by checking for posix_extensions in cifs_setattr_nounix() when updating UI…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64390] In the Linux kernel, the following vulnerability has been resolved: ksmbd: track the connection own…

In the Linux kernel, the following vulnerability has been resolved: ksmbd: track the connection owning a byte-range lock SMB2_LOCK adds each granted byte-range lock to both the file lock list and the lock list of the connection which handled the request. The final close and durable handle paths, however, remove the connection list entry while holding fp->conn->llist_lock. With SMB3 multichanne…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64380] In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID l…

In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID length parsing posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.

nvdaltovulnerabilidad CVSS 8.2 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64382] In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in…

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_open() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_open_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale fre…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64383] In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in…

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize res…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64384] In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify …

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_notify_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale fr…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64385] In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in…

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_ioctl() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_ioctl_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale f…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64386] In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() r…

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64368] In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing t…

In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing to orig_size when only red zoning is enabled When init (zeroing) on allocation is requested, for kmalloc() we generally have to zero the full object size even if a smaller size is requested, in order to provide krealloc()'s __GFP_ZERO guarantees. But if we track the requested size, krealloc() uses …

nvdaltovulnerabilidad CVSS 8.1 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64354] In the Linux kernel, the following vulnerability has been resolved: bpf: Validate BTF repeated fiel…

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate BTF repeated field counts before expansion btf_parse_struct_metas() walks user-supplied BTF during BPF_BTF_LOAD, and btf_repeat_fields() expands repeatable fields from array elements into the fixed BTF_FIELDS_MAX scratch array used by btf_parse_fields(). The remaining-capacity check performs the expanded field cou…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64355] In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames i…

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the packet for all but the last destination. For native XDP, that clone path copies only the linear xdp_frame data, while fragmented frames keep skb_shared_info in tailroom outside the linear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but wi…

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64319] In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply mess…

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply message payload bounds against transfer length nvmet_auth_reply() accesses the variable-length rval[] array using attacker-controlled hl (hash length) and dhvlen (DH value length) fields without verifying they fit within the allocated buffer of tl bytes. A malicious NVMe-oF initiator can craft a DHCHA…

nvdcriticovulnerabilidad CVSS 9.1 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64303] In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate the R…

In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate the RX channel on TX prepare failure path When dmaengine_prep_slave_sg() fails for the TX channel, the error path terminates the TX DMA channel but leaves the RX channel running. Since the RX channel was already submitted and issued prior to preparing the TX descriptor, returning -EINVAL causes the SPI …

nvdcriticovulnerabilidad CVSS 9.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64296] In the Linux kernel, the following vulnerability has been resolved: exfat: bound uniname advance in…

In the Linux kernel, the following vulnerability has been resolved: exfat: bound uniname advance in exfat_find_dir_entry() In exfat_find_dir_entry(), each TYPE_EXTEND (file name) entry advances the output pointer by a fixed amount while the loop guard only tracks the accumulated name length: if (++order == 2) uniname = p_uniname->name; else uniname += EXFAT_FILE_NAME_LEN; len = exfat_ext…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64286] In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear __hyp_running…

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU flush_hyp_vcpu() copies the host vCPU context into the hyp's private vCPU on every run. ctxt_to_vcpu() expects a guest context to have a NULL __hyp_running_vcpu, which is only ever set on the host context, so that it resolves the vCPU via container_of(). While …

nvdaltovulnerabilidad CVSS 8.2 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64277] In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound t…

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count rmi_f3a_initialize() takes the GPIO count from the device query register (f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT, range 0..127). rmi_f3a_map_gpios() then allocates gpio_key_map with min(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f3a_attention…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64281] In the Linux kernel, the following vulnerability has been resolved: svcrdma: wake sq waiters when t…

In the Linux kernel, the following vulnerability has been resolved: svcrdma: wake sq waiters when the transport closes Threads parked in svc_rdma_sq_wait() on sc_sq_ticket_wait or sc_send_wait can hang indefinitely in TASK_UNINTERRUPTIBLE state across transport teardown, pinning svc_xprt references and blocking svc_rdma_free(). The close path sets XPT_CLOSE before invoking xpo_detach and both w…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Crítico vulnerabilidad

25/07/2026

[CVE-2026-64268] In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: bound Read Response p…

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: bound Read Response placement to the RREAD length In drivers/infiniband/sw/siw/siw_qp_rx.c, siw_proc_rresp() places each inbound Read Response DDP segment at sge->laddr + wqe->processed and then accumulates wqe->processed, but it never checks the running total against the sink buffer length on continuation segments. si…

nvdcriticovulnerabilidad CVSS 9.8 NVD