Alertas de Seguridad de la Información

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64444] In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB rea…

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each iteration but only guards on i < pkt_len. When a malicious AP sends an AssocResponse whose last IE has only one byte remaining in the frame (the element_id byte lands at pkt_len-1), the loop reads pIE->…

nvdaltovulnerabilidad CVSS 8.1 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64447] In the Linux kernel, the following vulnerability has been resolved: staging: media: ipu7: fix doubl…

In the Linux kernel, the following vulnerability has been resolved: staging: media: ipu7: fix double-free and use-after-free in error paths In both ipu7_isys_init() and ipu7_psys_init(), pdata is allocated and then passed to ipu7_bus_initialize_device(), which stores it in adev->pdata. The ipu7_bus_release() function frees adev->pdata when the device's reference count drops to zero. Two error p…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64436] In the Linux kernel, the following vulnerability has been resolved: net: af_key: initialize alg_key…

In the Linux kernel, the following vulnerability has been resolved: net: af_key: initialize alg_key_len for IPComp states pfkey_msg2xfrm_state() handles the IPComp (SADB_X_SATYPE_IPCOMP) case by allocating x->calg and copying only the algorithm name: x->calg = kmalloc_obj(*x->calg); if (!x->calg) { err = -ENOMEM; goto out; } strcpy(x->calg->alg_name, a->name); x->props.calgo = sa->sadb…

nvdaltovulnerabilidad CVSS 7.1 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64441] In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB rea…

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr() Three IE/attribute parsing functions have missing bounds checks. rtw_get_sec_ie() and rtw_get_wapi_ie() iterate over a raw IE buffer without verifying that the header bytes (tag + length) are within the remaining buffer before readi…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64443] In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB rea…

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop The IE parsing loop in update_beacon_info() advances by (pIE->length + 2) each iteration but only guards on i < len. When a malicious AP sends a Beacon whose last IE has only one byte remaining in the frame (the element_id byte lands at len-1), the loop reads pIE->…

nvdaltovulnerabilidad CVSS 8.1 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64434] In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix UAF in ch…

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref l2cap_chan_timeout() runs asynchronously and accesses chan->conn. If the connection is torn down while the timer is running or pending, chan->conn can be freed, leading to a use-after-free when the timer worker attempts to lock conn->lock: | BUG: KASAN: slab-use-a…

nvdaltovulnerabilidad CVSS 8.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64413] In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: zero chain…

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: zero chainstack array sashiko reports: looking at ebtables table translation, could a sparse cpu_possible_mask lead to an uninitialized pointer free? If cpu_possible_mask is sparse (for example, CPU 0 and CPU 2 are possible, but CPU 1 is not), the allocation loop skips CPU 1. If vmalloc_node() fails at…

nvdaltovulnerabilidad CVSS 7.0 NVD

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 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 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 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 Alto vulnerabilidad

25/07/2026

[CVE-2026-64259] In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fuse_req on …

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fuse_req on SQE commit only findable after memcpy Bad userspace might try to trick us and send commit SQEs request unique / commit-id of requests that are not even send to fuse-server (io_uring_cmd_done() not called) yet. fuse_uring_commit_fetch() ends the fuse request when the ring entry has a wrong state, b…

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

25/07/2026

[CVE-2026-64266] In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before re…

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning. fuse_chan_abort() can end the request and the async end callback (eg fuse_writepage_free()) can free the args while the subsequent copy chain logic after fuse_ref_folio() accesses them, lead…

nvdaltovulnerabilidad CVSS 7.8 NVD