OESA-2023-1469 (CVE-2023-21255)

Vulnerability from osv_openeuler – Published: 2023-08-06 11:05 – Updated: 2026-08-06 11:05 – Source website
VLAI
Summary
kernel security update
Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

(CVE-2023-21255)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

(CVE-2023-3609)

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.

We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

(CVE-2023-3611)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

(CVE-2023-3776)

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2023-3812)

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "kernel-tools-devel-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "python2-perf-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "bpftool-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-tools-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "python2-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "python3-perf-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-source-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-tools-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "python3-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "perf-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "bpftool-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-debugsource-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "kernel-devel-4.19.90-2308.1.0.0212.oe1.aarch64.rpm",
          "perf-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm"
        ],
        "src": [
          "kernel-4.19.90-2308.1.0.0212.oe1.src.rpm"
        ],
        "x86_64": [
          "python3-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "python3-perf-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-tools-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-source-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-tools-devel-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "bpftool-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "python2-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "bpftool-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "python2-perf-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "perf-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-devel-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "perf-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-debugsource-4.19.90-2308.1.0.0212.oe1.x86_64.rpm",
          "kernel-tools-4.19.90-2308.1.0.0212.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.19.90-2308.1.0.0212.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nIn multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.\r\n\r\n(CVE-2023-21255)\r\n\r\nA use-after-free vulnerability in the Linux kernel\u0026apos;s net/sched: cls_u32 component can be exploited to achieve local privilege escalation.\r\n\r\nIf tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\r\n\r\nWe recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.\r\n\r\n(CVE-2023-3609)\r\n\r\nAn out-of-bounds write vulnerability in the Linux kernel\u0026apos;s net/sched: sch_qfq component can be exploited to achieve local privilege escalation.\r\n\r\nThe qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.\r\n\r\nWe recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.\r\n\r\n(CVE-2023-3611)\r\n\r\nA use-after-free vulnerability in the Linux kernel\u0026apos;s net/sched: cls_fw component can be exploited to achieve local privilege escalation.\r\n\r\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\r\n\r\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.\r\n\r\n(CVE-2023-3776)\r\n\r\nAn out-of-bounds memory access flaw was found in the Linux kernel\u2019s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2023-3812)",
  "id": "OESA-2023-1469",
  "modified": "2026-08-06T11:05:55Z",
  "published": "2023-08-06T11:05:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1469"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21255"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3609"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3611"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3776"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3812"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2023-21255",
    "CVE-2023-3609",
    "CVE-2023-3611",
    "CVE-2023-3776",
    "CVE-2023-3812"
  ]
}



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