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OESA-2023-1468 (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)

(CVE-2023-2163)

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.(CVE-2023-32248)

VUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability(CVE-2023-32255)

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information.(CVE-2023-3567)

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)

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered.

We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795.

(CVE-2023-3610)

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 issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.(CVE-2023-38426)

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.(CVE-2023-38428)

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "kernel-headers-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-devel-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "python3-perf-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-tools-debuginfo-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-tools-devel-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "perf-debuginfo-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-tools-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "python3-perf-debuginfo-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-debugsource-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "perf-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "bpftool-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "bpftool-debuginfo-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-source-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-debuginfo-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm",
          "kernel-5.10.0-153.21.0.97.oe2203sp2.aarch64.rpm"
        ],
        "src": [
          "kernel-5.10.0-153.21.0.97.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "kernel-tools-devel-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "perf-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-debugsource-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-tools-debuginfo-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-tools-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "python3-perf-debuginfo-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-devel-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "python3-perf-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "bpftool-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "bpftool-debuginfo-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "perf-debuginfo-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-source-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-debuginfo-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm",
          "kernel-headers-5.10.0-153.21.0.97.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.0-153.21.0.97.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "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\n(CVE-2023-2163)\r\n\r\nA flaw was found in the Linux kernel\u0026apos;s ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.(CVE-2023-32248)\r\n\r\nVUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability(CVE-2023-32255)\r\n\r\nA use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information.(CVE-2023-3567)\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\nA use-after-free vulnerability in the Linux kernel\u0026apos;s netfilter: nf_tables component can be exploited to achieve local privilege escalation.\r\n\r\nFlaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered.\r\n\r\nWe recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795.\r\n\r\n(CVE-2023-3610)\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 issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context\u0026apos;s name_len is larger than the tag length.(CVE-2023-38426)\r\n\r\nAn issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.(CVE-2023-38428)",
  "id": "OESA-2023-1468",
  "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-2023-1468"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21255"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2163"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32248"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32255"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3567"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3609"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3610"
    },
    {
      "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-2023-38426"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38428"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2023-21255",
    "CVE-2023-2163",
    "CVE-2023-32248",
    "CVE-2023-32255",
    "CVE-2023-3567",
    "CVE-2023-3609",
    "CVE-2023-3610",
    "CVE-2023-3611",
    "CVE-2023-3776",
    "CVE-2023-38426",
    "CVE-2023-38428"
  ]
}



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