rhsa-2025_2646
Vulnerability from csaf_redhat
Published
2025-03-11 08:58
Modified
2025-03-20 19:18
Summary
Red Hat Security Advisory: kernel security update

Notes

Topic
An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. 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 packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: HID: core: zero-initialize the report buffer (CVE-2024-50302) * kernel: can: bcm: Fix UAF in bcm_proc_show() (CVE-2023-52922) * kernel: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices (CVE-2024-53197) 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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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Anderson Nascimento"
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          "organization": "Allele Security Intelligence"
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      "cve": "CVE-2023-52922",
      "cwe": {
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        "name": "Use After Free"
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      "discovery_date": "2024-11-28T00:00:00+00:00",
      "ids": [
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          "text": "2329370"
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        {
          "category": "description",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: Fix UAF in bcm_proc_show()\n\nBUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80\nRead of size 8 at addr ffff888155846230 by task cat/7862\n\nCPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0xd5/0x150\n print_report+0xc1/0x5e0\n kasan_report+0xba/0xf0\n bcm_proc_show+0x969/0xa80\n seq_read_iter+0x4f6/0x1260\n seq_read+0x165/0x210\n proc_reg_read+0x227/0x300\n vfs_read+0x1d5/0x8d0\n ksys_read+0x11e/0x240\n do_syscall_64+0x35/0xb0\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAllocated by task 7846:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n __kasan_kmalloc+0x9e/0xa0\n bcm_sendmsg+0x264b/0x44e0\n sock_sendmsg+0xda/0x180\n ____sys_sendmsg+0x735/0x920\n ___sys_sendmsg+0x11d/0x1b0\n __sys_sendmsg+0xfa/0x1d0\n do_syscall_64+0x35/0xb0\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nFreed by task 7846:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_save_free_info+0x27/0x40\n ____kasan_slab_free+0x161/0x1c0\n slab_free_freelist_hook+0x119/0x220\n __kmem_cache_free+0xb4/0x2e0\n rcu_core+0x809/0x1bd0\n\nbcm_op is freed before procfs entry be removed in bcm_release(),\nthis lead to bcm_proc_show() may read the freed bcm_op.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: can: bcm: Fix UAF in bcm_proc_show()",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "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.",
          "title": "CVSS score applicability"
        }
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-52922"
        },
        {
          "category": "external",
          "summary": "RHBZ#2329370",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2329370"
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-52922",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-52922"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-52922",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52922"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2024112856-CVE-2023-52922-39e1@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2024112856-CVE-2023-52922-39e1@gregkh/T"
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      "release_date": "2024-11-28T00:00:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2025-03-11T08:58:02+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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          "text": "A vulnerability was found in the Linux kernel\u0027s driver for Human Interface Devices. This flaw allows an attacker to use a malicious input device to read information from the report buffer. This could be used to leak kernel memory, enabling the exploitation of additional vulnerabilities.",
          "title": "Vulnerability description"
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          "title": "Vulnerability summary"
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          "text": "While this vulnerability could lead to disclosure of kernel memory, the impact is rated Moderate because exploitation  requires bypassing additional security features such as kernel address-space layout randomization (KASLR). It could be exploited by an authenticated, local attacker who emulates a malicious Human Interface Device (HID).",
          "title": "Statement"
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        {
          "category": "general",
          "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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        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
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          "text": "2334412"
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          "text": "A vulnerability was found in the Linux kernel\u0027s USB Audio driver. This flaw allows an attacker with physical access to the system to use a malicious USB device to gain additional access. This is possible by manipulating system memory, potentially escalating privileges, or executing arbitrary code.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This CVE marked as important vulnerability because it allows a malicious or compromised USB device to trigger out-of-bounds memory accesses in the Linux kernel\u2019s ALSA USB audio subsystem. This occurs due to improper handling of bNumConfigurations, which can lead to memory corruption or even privilege escalation if exploited. Since USB devices can be dynamically plugged in, an attacker with physical access could potentially exploit this flaw to execute arbitrary code in kernel space or cause a system crash.\nBecause the kernel supports virtual USB devices, this vulnerability could still be exploited by an attacker without physical access, but is able to create virtual USB devices which use the vulnerable device drivers.",
          "title": "Statement"
        },
        {
          "category": "general",
          "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.",
          "title": "CVSS score applicability"
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            "BaseOS-8.2.0.Z.AUS:python3-perf-0:4.18.0-193.146.1.el8_2.x86_64",
            "BaseOS-8.2.0.Z.AUS:python3-perf-debuginfo-0:4.18.0-193.146.1.el8_2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices"
    }
  ]
}


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