Vulnerabilidades de la pila Sistemas operativos · Página 103

Important: bubblewrap security update

Bubblewrap (/usr/bin/bwrap) is a core execution engine for unprivileged containers that works as a setuid binary on kernels without user namespaces. Security Fix(es): * bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup (CVE-2026-87766) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• Actualiza a 0:0.6.3-1.el9_8.1

Moderate: hostapd security update

hostapd is a user space daemon for access point and authentication servers. It implements IEEE 802.11 access point management, IEEE 802.1X/WPA/WPA2/EAP Authenticators and RADIUS authentication server. hostapd is designed to be a "daemon" program that runs in the back-ground and acts as the backend component controlling authentication. hostapd supports separate frontend programs and an example text-based frontend, hostapd_cli, is included with hostapd. Security Fix(es): * hostapd: hostapd: Denial of Service via malformed Wi-Fi 7 Multi-Link Operation association request (CVE-2026-58374) For more details about the security issue(s), includin

• Actualiza a 0:2.11-3.el9_8

Important: kernel-rt security, bug fix, and enhancement update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935) * kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196) * kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588) * kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752) * kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631) * kernel: sctp: stop processing a packet once it

• Actualiza a 0:4.18.0-553.176.1.rt7.517.el8_10

Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935) * kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196) * kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588) * kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752) * kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631) * kernel: sctp: stop processing a packet once its association is deleted (CVE-2026-89479) * kernel: perf

• Actualiza a 0:4.18.0-553.176.1.el8_10

Important: bubblewrap security update

Bubblewrap (/usr/bin/bwrap) is a core execution engine for unprivileged containers that works as a setuid binary on kernels without user namespaces. Security Fix(es): * bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup (CVE-2026-87766) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• Actualiza a 0:0.4.0-3.el8_10

Important: python3 security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * python: python: Arbitrary file deletion via race condition during temporary directory cleanup (CVE-2026-12345) * python: python: Certificate verification bypass via missing server_hostname validation in SSLContext.wrap_bio() (CVE-2026-19553) * python: Use-after-free of a server-side SSLContext when sni_callback switches contexts (CVE-2026-1944

• Actualiza a 0:3.6.8-79.el8_10.rocky.0

Security update for cyrus-sasl

This update for cyrus-sasl fixes the following issues: Security issue fixed: - CVE-2026-107161: Heap buffer overflow in cyrus-sasl add_to_challenge() allows malicious server to crash or compromise DIGEST-MD5 clients (bsc#1284687). Non security issues fixed: - Fix cyrus-sasl package failing to build with GCC 14 (bsc#1221863). - Replace insecure MD5 with ephemeral HMAC-SHA256 (bsc#1247498). - Make DIGEST-MD5 work with openssl3 (bsc#1230111).

• Actualiza a 2.1.28-160000.4.1

Security update for cyrus-sasl

This update for cyrus-sasl fixes the following issues: Security issue fixed: - CVE-2026-107161: Heap buffer overflow in cyrus-sasl add_to_challenge() allows malicious server to crash or compromise DIGEST-MD5 clients (bsc#1284687). Non security issues fixed: - Fix cyrus-sasl package failing to build with GCC 14 (bsc#1221863). - Replace insecure MD5 with ephemeral HMAC-SHA256 (bsc#1247498). - Make DIGEST-MD5 work with openssl3 (bsc#1230111).

• Actualiza a 2.1.28-160000.4.1

Security update for cyrus-sasl

This update for cyrus-sasl fixes the following issues: Security issue fixed: - CVE-2026-107161: Heap buffer overflow in cyrus-sasl add_to_challenge() allows malicious server to crash or compromise DIGEST-MD5 clients (bsc#1284687). Non security issues fixed: - Fix cyrus-sasl package failing to build with GCC 14 (bsc#1221863). - Replace insecure MD5 with ephemeral HMAC-SHA256 (bsc#1247498). - Make DIGEST-MD5 work with openssl3 (bsc#1230111).

• Actualiza a 2.1.28-160000.4.1

CVE-2026-93856

In OpenStack Cinder through 29.0.0, cross-project information disclosure can occur in the Messages API. A non-admin user with the project-scoped 'member' or 'reader' role making the Block Storage API v3.3 "List messages" call finds the non-expired user messages for other projects included in the response, resulting in the leakage of UUIDs of resources owned by other projects, in addition to the user message about the other projects' resources (which, by design, are sanitized generic messages). All Cinder deployments are affected.

• Actualiza a 26.3.1
• Actualiza a 2:29.0.0-3

CVE-2026-71195

In OpenStack Manila before 23.0.1, multiple Manila API operations on public shares do not verify that the caller owns the share. The API controllers authorize operations against the caller's own project context, then load a foreign public share without re-authorizing against the share's actual owner. This affects the following operations: allow_access: grant data-plane read/write access to another tenant's share; deny_access: revoke the owner's existing access rules; update_access: escalate access level (e.g., ro to rw); create_share_backup: exfiltrate share data via a backup created under the attacker's project; soft_delete: move a foreign s

• Actualiza a 1:23.0.0-4
• Actualiza a 20.0.3
• Actualiza a 21.0.3
• Actualiza a 22.0.2
• Actualiza a 23.0.1

Security update for containerd

This update for containerd fixes the following issues: - CVE-2026-53488: CRI plugin propagates labels from an image config to a container without validation (bsc#1268430).

• Actualiza a 1.7.29-150000.149.1

Security update for the Linux Kernel (Live Patch 44 for SUSE Linux Enterprise 15 SP5)

This update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.182 fixes various security issues: The following security issues were fixed: - CVE-2026-63887: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (bsc#1272386). - CVE-2026-68158: libceph: Fix multiplication overflow in decode_new_up_state_weight() (bsc#1276303).

• Actualiza a 4-150400.2.1
• Actualiza a 4-150500.2.1

Libmodulemd: libmodulemd: out-of-bounds read when emitting rpm-map artifacts

A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.

Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml

A flaw was found in libmodulemd. When parsing module metadata, the xmd field is converted into nested GVariant values through recursive YAML mapping and sequence helpers without a recursion-depth or node-count limit. An attacker who can supply crafted modulemd YAML with deeply nested xmd content can cause stack exhaustion or excessive resource consumption, resulting in a denial of service.

Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml

A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.

Distrust compromised intermediate certificates in crypto/x509

On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.

• Actualiza a 1.26.10
• Actualiza a 1.26.10-1
• Actualiza a 1.27.3
• Actualiza a 1.27.3-1

Astral uv before 0.11.6 Arbitrary File Deletion via Wheel RECORD Entries

Astral uv before 0.11.6 contains a path traversal vulnerability that allows attackers to delete arbitrary files by supplying wheels with relative traversal paths in RECORD entries. Attackers can craft a malicious wheel whose RECORD references files outside the installation prefix, causing uv to delete those files when the user uninstalls the package.

• Actualiza a 0.11.6

uv before 0.11.15 Arbitrary File Write via Entry Point Names

uv before 0.11.15 contains a path traversal vulnerability that allows malicious wheels to write files outside the scripts directory via crafted console_scripts or gui_scripts entry point names. Attackers who induce users to install a malicious wheel can place executables in PATH directories, shadowing or overwriting existing binaries for code execution.

• Actualiza a 0.11.15

Dulwich 0.22.5 before 1.2.8 Path Traversal via Stash Pop Symlinks

Dulwich from 0.22.5 before 1.2.8 contains a path traversal vulnerability in stash.py pop() that allows attackers to write arbitrary files outside the worktree through intermediate directory symlinks. Attackers can craft a malicious repository whose popped stash writes a payload into .git/hooks/post-checkout, achieving code execution on the next checkout.

• Actualiza a 1.2.8
• Actualiza a 1.2.8-1