Alertas de Seguridad de la Información

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52923] In the Linux kernel, the following vulnerability has been resolved: ipc: limit next_id allocation t…

In the Linux kernel, the following vulnerability has been resolved: ipc: limit next_id allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids->next_id. ipc_idr_alloc() currently forwards that request to idr_alloc() with an open-ended upper bound. If the valid tail of the SysV IPC id space is full, the allocation can spill beyond ipc_mni…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Crítico vulnerabilidad

24/06/2026

[CVE-2026-52924] In the Linux kernel, the following vulnerability has been resolved: sctp: purge outqueue on stale C…

In the Linux kernel, the following vulnerability has been resolved: sctp: purge outqueue on stale COOKIE-ECHO handling sctp_stream_update() is only invoked when the association is moved into COOKIE_WAIT during association setup/reconfiguration. In this path, the outbound stream scheduler state (stream->out_curr) is expected to be clean, since no user data should have been transmitted yet unless …

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52927] In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB re…

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix OOB read in compat_mtw_from_user Luxiao Xu says: The function compat_mtw_from_user() converts ebtables extensions from 32-bit user structures to kernel native structures. However, it lacks proper validation of the user-supplied match_size/target_size. When certain extensions are processed, the kern…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Crítico vulnerabilidad

24/06/2026

[CVE-2026-52914] In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix fragment reasse…

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix fragment reassembly length accounting batman-adv keeps a running payload length for queued fragments and uses it to validate a fragment chain before reassembly. That accounting currently allows the accumulated fragment length to be truncated during updates. As a result, malformed fragment chains can bypass the i…

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52915] In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_hbh: reject ove…

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_hbh: reject oversized option lists struct ip6t_opts stores at most IP6T_OPTS_OPTSNR option descriptors, but hbh_mt6_check() does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup path so only match data that fits the fixed-size opts array can be installed. This follows th…

nvdaltovulnerabilidad CVSS 7.1 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52917] In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associ…

In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then resume after sctp_association_free() has marked the association dead and freed its bind address list. When that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill()…

nvdaltovulnerabilidad CVSS 7.1 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52918] In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q a…

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q access bt_sock_poll() walks the accept queue without synchronization, while child teardown can unlink the same socket and drop its last reference. The unsynchronized accept queue walk has existed since the initial Bluetooth import. Protect accept_q with a dedicated lock for queue updates and pollin…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52919] In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counte…

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counter underflow during shutdown batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter can underflow to -1. Since the sender logic treats any non-zero value as "still sending"…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52920] In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_policy: fix stric…

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_policy: fix strict mode inbound policy matching match_policy_in() walks sec_path entries from the last transform to the first one, but strict policy matching needs to consume info->pol[] in the same forward order as the rule layout. Derive the strict-match policy position from the number of transforms already cons…

nvdaltovulnerabilidad CVSS 8.3 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52912] In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: hold bridg…

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: hold bridge skb->dev while queued br_pass_frame_up() rewrites skb->dev from the ingress port to the bridge master before queueing bridge LOCAL_IN packets. NFQUEUE only holds references on state.in/out and bridge physdevs, so a queued bridge packet can retain a freed bridge master in skb->dev until reinjectio…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

21/06/2026

[CVE-2026-52911] In the Linux kernel, the following vulnerability has been resolved: ksmbd: scope conn->binding slow…

In the Linux kernel, the following vulnerability has been resolved: ksmbd: scope conn->binding slowpath to bound sessions only When the binding SESSION_SETUP sets conn->binding = true, the flag stays set after the call so that the global session lookup in ksmbd_session_lookup_all() can find the session, which was not added to conn->sessions. Because the flag is connection-wide, the global lookup…

nvdaltovulnerabilidad CVSS 8.8 NVD

L Alto vulnerabilidad

19/06/2026

[CVE-2026-52908] In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure th…

In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure that REREG_ACCESS is compatible If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be re-evaluated to ensure it is properly pinned as RW. Since the umem is hidden inside each driver's mr struct add a ib_umem_check_rereg() function that each driver has to call before processing IB_MR_RER…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

19/06/2026

[CVE-2026-52909] In the Linux kernel, the following vulnerability has been resolved: ip6_vti: set netns_immutable on…

In the Linux kernel, the following vulnerability has been resolved: ip6_vti: set netns_immutable on the fallback device. john1988 and Noam Rathaus reported that vti6_init_net() does not set the netns_immutable flag on the per-netns fallback tunnel device (ip6_vti0). Other similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel) correctly set this flag during their fallback device i…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

19/06/2026

[CVE-2026-52910] In the Linux kernel, the following vulnerability has been resolved: bpf: Free reuseport cBPF prog a…

In the Linux kernel, the following vulnerability has been resolved: bpf: Free reuseport cBPF prog after RCU grace period. Eulgyu Kim reported the splat below with a repro. [0] The repro sets up a UDP reuseport group with a cBPF prog and replaces it with a new one while another thread is sending a UDP packet to the group. The reuseport prog is freed by sk_reuseport_prog_free(). bpf_prog_put() i…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

16/06/2026

[CVE-2026-46331] In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial CO…

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial COW leading to page cache corruption tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd. Fix by moving skb…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

09/06/2026

[CVE-2026-52906] In the Linux kernel, the following vulnerability has been resolved: 9p: fix access mode flags being…

In the Linux kernel, the following vulnerability has been resolved: 9p: fix access mode flags being ORed instead of replaced Since commit 1f3e4142c0eb ("9p: convert to the new mount API"), v9fs_apply_options() applies parsed mount flags with |= onto flags already set by v9fs_session_init(). For 9P2000.L, session_init sets V9FS_ACCESS_CLIENT as the default, so when the user mounts with "access=us…

nvdaltovulnerabilidad CVSS 7.7 NVD

L Alto vulnerabilidad

09/06/2026

[CVE-2026-52907] In the Linux kernel, the following vulnerability has been resolved: media: rockchip: rkcif: fix off…

In the Linux kernel, the following vulnerability has been resolved: media: rockchip: rkcif: fix off by one bugs Change these comparisons from > vs >= to avoid accessing one element beyond the end of the arrays. While at it, use ARRAY_SIZE instead of the _MAX enum values. [fix cosmetic issues]

nvdaltovulnerabilidad CVSS 7.8 NVD

L Crítico vulnerabilidad

09/06/2026

[CVE-2026-46325] In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix iova-to-va conver…

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE The current implementation incorrectly handles memory regions (MRs) with page sizes different from the system PAGE_SIZE. The core issue is that rxe_set_page() is called with mr->page_size step increments, but the page_list stores individual struct page pointers, …

nvdcriticovulnerabilidad CVSS 9.8 NVD

L Alto vulnerabilidad

09/06/2026

[CVE-2026-46326] In the Linux kernel, the following vulnerability has been resolved: iio: pressure: mprls0025pa: fix…

In the Linux kernel, the following vulnerability has been resolved: iio: pressure: mprls0025pa: fix spi_transfer struct initialisation Make sure that the spi_transfer struct is zeroed out before use.

nvdaltovulnerabilidad CVSS 8.4 NVD

L Alto vulnerabilidad

09/06/2026

[CVE-2026-46327] In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dm_su…

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dm_suspended_md The function dm_blk_report_zones tests if the device is suspended with the "dm_suspended_md" call. However, this function is called without holding any locks, so the device may be suspended just after it. Move the call to dm_suspended_md after dm_get_live_table, so that the device can't…

nvdaltovulnerabilidad CVSS 7.8 NVD