rhsa-2025:18298
Vulnerability from csaf_redhat
Published
2025-10-20 02:35
Modified
2025-11-03 22:16
Summary
Red Hat Security Advisory: kernel-rt security update

Notes

Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
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: ALSA: usb-audio: Validate UAC3 cluster segment descriptors (CVE-2025-39757) * kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (CVE-2025-39751) * kernel: crypto: seqiv - Handle EBUSY correctly (CVE-2023-53373) 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.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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          "text": "The flaw is in the seqiv IV generator and can lead to a use-after-free when backlogged crypto requests return -EBUSY. Triggering it is easier locally by flooding the kernel crypto API (e.g. via AF_ALG or many concurrent AEAD requests) because the attacker must create backlog conditions. Remote triggering is much harder and only realistic for specific configurations (for example an in-kernel IPsec/TLS path that uses seqiv for AEAD). In practice this means an unprivileged local user with access to the kernel crypto interface is the most likely threat vector, while a remote attacker would need the target to both use seqiv and be inducible into heavy crypto backlog.",
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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      "title": "kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors"
    }
  ]
}


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