Alertas de Seguridad de la Información

M Alto vulnerabilidad

14/07/2026

[CVE-2026-50315] Null pointer dereference in Windows Image Acquisition allows an authorized attacker to elevate privi…

Null pointer dereference in Windows Image Acquisition allows an authorized attacker to elevate privileges locally.

nvdaltovulnerabilidad CVSS 7.8 NVD

M Alto vulnerabilidad

13/07/2026

[CVE-2026-58101] Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer derefer…

Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid->keyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds. A caller inv…

nvdaltovulnerabilidad CVSS 7.5 NVD

Z Alto vulnerabilidad

09/07/2026

[CVE-2026-60109] Zeek before 8.0.9 contains a null pointer dereference vulnerability in its Kerberos protocol analyze…

Zeek before 8.0.9 contains a null pointer dereference vulnerability in its Kerberos protocol analyzer that allows unauthenticated remote attackers to crash the sensor by sending a crafted KRB_ERROR message with error-code 25 (KDC_ERR_PREAUTH_REQUIRED) containing a PA-DATA element with padata-type 2, 3, 11, or 19. Attackers can exploit a parser and analyzer state mismatch where proc_padata() derefe…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

08/07/2026

[CVE-2026-58250] NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Pr…

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by sending repeated leafnode INFO protocol messages before authentication and account setup completed. This i…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

06/07/2026

[CVE-2026-38976] mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in op_super() / OP_…

mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in op_super() / OP_SUPER due to a missing runtime guard for top-level super.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

01/07/2026

[CVE-2026-36912] A NULL pointer dereference in the AP4_AtomSampleTable::GetSample() function of Aleksoid1978 MPC-BE b…

A NULL pointer dereference in the AP4_AtomSampleTable::GetSample() function of Aleksoid1978 MPC-BE before commit 4341cb3 allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

29/06/2026

[CVE-2026-56017] JavaScript::Minifier::XS versions before 0.16 for Perl crash with a NULL pointer dereference when th…

JavaScript::Minifier::XS versions before 0.16 for Perl crash with a NULL pointer dereference when the first meaningful token of the input is a slash. The regexp versus division disambiguator in JsTokenizeString (XS.xs) inspects the previous token's last byte to choose between a regexp literal and a division operator. When a slash is the first meaningful token, with the start of input or only whit…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

26/06/2026

[CVE-2026-53284] In the Linux kernel, the following vulnerability has been resolved: btrfs: only release the dirty p…

In the Linux kernel, the following vulnerability has been resolved: btrfs: only release the dirty pages io tree after successful writes [WARNING] With extra warning on dirty extent buffers at umount (aka, the next patch in the series), test case generic/388 can trigger the following warning about dirty extent buffers at unmount time: BTRFS critical (device dm-2 state E): emergency shutdown …

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

26/06/2026

[CVE-2026-53281] In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Avoid NULL pointer …

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Avoid NULL pointer dereference or refcount corruption Commit 60f030f7418d ("iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE") fixed a NULL pointer dereference in an unlikely situation partly. If dev_pasid is not found in the dev_pasids list, it remains NULL. However, the teardown operations are executed uncondition…

nvdaltovulnerabilidad CVSS 8.8 NVD

E Alto vulnerabilidad

26/06/2026

[CVE-2026-47220] Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 u…

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is used in log format and host related options is specified, like HOST_FIRST, SNI_FIRST, it's possible to crash Envoy when the specified host header is missing in the request headers. This vulnerability is fixed in 1.37.5 and 1.38.3.

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

26/06/2026

[CVE-2026-57873] An unauthenticated NULL pointer dereference vulnerability exists in IEEE8021x_upload.cgi in GeoVisio…

An unauthenticated NULL pointer dereference vulnerability exists in IEEE8021x_upload.cgi in GeoVision GV-LPC2011 and GV-LPC2211 V1.12 and earlier. The vulnerability is caused by improper validation of multipart upload headers when processing certificate-related upload fields. A remote attacker may exploit this vulnerability by sending a malformed multipart request, causing the affected CGI process…

nvdaltovulnerabilidad CVSS 7.5 NVD

M Alto vulnerabilidad

26/06/2026

[CVE-2026-57875] An unauthenticated NULL pointer dereference vulnerability exists in the HTTP request parsing logic o…

An unauthenticated NULL pointer dereference vulnerability exists in the HTTP request parsing logic of multiple CGI components in GeoVision GV-LPC2011 and GV-LPC2211 V1.12 and earlier. The vulnerability is caused by improper validation of required HTTP request metadata before it is used by the affected components. A remote attacker may exploit this vulnerability by sending a specially crafted HTTP …

nvdaltovulnerabilidad CVSS 7.5 NVD

S Alto vulnerabilidad

25/06/2026

[CVE-2026-9716] CWE-476 NULL Pointer Dereference vulnerability exists that could cause a denial-of-service condition…

CWE-476 NULL Pointer Dereference vulnerability exists that could cause a denial-of-service condition, rendering the device’s HMI and configuration functionality unavailable when malformed requests are received over exposed network interfaces.

nvdaltovulnerabilidad CVSS 7.5 NVD

N Alto vulnerabilidad

25/06/2026

[CVE-2026-57434] Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, …

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53242] In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list …

In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams snd_pcm_drain() uses init_waitqueue_entry which does not clear entry.prev/next, and add_wait_queue with a conditional remove_wait_queue that is skipped when to_check is no longer in the group after concurrent UNLINK. The orphaned wait entry remains o…

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

25/06/2026

[CVE-2026-53165] In the Linux kernel, the following vulnerability has been resolved: iomap: avoid potential null fol…

In the Linux kernel, the following vulnerability has been resolved: iomap: avoid potential null folio->mapping deref during error reporting When a buffered read fails, iomap_finish_folio_read() reports the error with fserror_report_io(folio->mapping->host, ...). This is called after ifs->read_bytes_pending has been decremented by the bytes attempted to be read. For a folio split across multiple…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53096] In the Linux kernel, the following vulnerability has been resolved: bpf: Use RCU-safe iteration in …

In the Linux kernel, the following vulnerability has been resolved: bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path The DEVMAP_HASH branch in dev_map_redirect_multi() uses hlist_for_each_entry_safe() to iterate hash buckets, but this function runs under RCU protection (called from xdp_do_generic_redirect_map() in softirq context). Concurrent writers (__dev_map_hash_update_elem, …

nvdaltovulnerabilidad CVSS 7.8 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-53069] In the Linux kernel, the following vulnerability has been resolved: net, bpf: fix null-ptr-deref in…

In the Linux kernel, the following vulnerability has been resolved: net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master syzkaller reported a kernel panic in bond_rr_gen_slave_id() reached via xdp_master_redirect(). Full decoded trace: https://syzkaller.appspot.com/bug?extid=80e046b8da2820b6ba73 bond_rr_gen_slave_id() dereferences bond->rr_tx_counter, a per-CPU counter that …

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52998] In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix p…

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix potential NULL dereference in ttl check The nf_osf_ttl() function accessed skb->dev to perform a local interface address lookup without verifying that the device pointer was valid. Additionally, the implementation utilized an in_dev_for_each_ifa_rcu loop to match the packet source address against l…

nvdaltovulnerabilidad CVSS 7.5 NVD

L Alto vulnerabilidad

24/06/2026

[CVE-2026-52951] In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: handle empty bo…

In the Linux kernel, the following vulnerability has been resolved: drm/xe/dma-buf: handle empty bo and UAF races There look to be some nasty races here when triggering the invalidate_mappings hook: 1) We do xe_bo_alloc() followed by the attach, before the actual full bo init step in xe_dma_buf_init_obj(). However the bo is visible on the attachments list after the attach. This is bad si…

nvdaltovulnerabilidad CVSS 7.8 NVD