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oesa-2021-1279
Vulnerability from osv_openeuler
Published
2021-07-24 11:04
Modified
2026-08-06 11:04
Summary
kernel security update
Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

there was a null pointer dereference in llcp_sock_getname in net/nfc/llcp_sock.c and reproduced it in linux-5.13.0-rc2. An unprivileged user can trigger this bug and cause denial of service. #Root Cause After creating an nfc socket, bind the address by calling bind(), if LLCP_SAP_MAX was used as SAP, it cause the bind() failed and there would set llcp_sock->service_name as NULL. Although bind() returns an error here, it does not affect calling other socket functions. sock_getname() would invoke llcp_sock_getname(), llcp_sock_getname copied service name from llcp_sock->service_name by memcpy but llcp_sock->service_name is NULL. #Fix the patch for this issue: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=4ac06a1e013c(CVE-2021-3587)

An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.(CVE-2020-36385)

The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.(CVE-2020-28097)

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.(CVE-2021-33624)

kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument.(CVE-2021-35039)

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space(CVE-2021-22555)

A flaw use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user detaches bluetooth dongle or other way triggers unregister bluetooth device event. A local user could use this flaw to crash the system or escalate their privileges on the system.(CVE-2021-3573)

Improper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access.(CVE-2021-0129)

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.(CVE-2021-34693)

An issue was discovered in the Linux kernel before 5.8.2. fs/io_uring.c has a use-after-free related to io_async_task_func and ctx reference holding, aka CID-6d816e088c35.(CVE-2020-36387)

A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges.(CVE-2021-3609)

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.(CVE-2021-3600)

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "kernel-devel-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "perf-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-debugsource-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "python2-perf-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "python3-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "bpftool-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "python3-perf-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "bpftool-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-source-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-tools-devel-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-tools-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "perf-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "python2-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-tools-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm"
        ],
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        ],
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          "python3-perf-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
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          "bpftool-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-tools-devel-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-devel-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
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          "perf-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "python3-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "python2-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-debugsource-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
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        ]
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      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "kernel",
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      },
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          "type": "ECOSYSTEM"
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    },
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      "ecosystem_specific": {
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          "python2-perf-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "python3-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
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          "kernel-tools-devel-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-tools-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "perf-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "python2-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm",
          "kernel-tools-debuginfo-4.19.90-2107.4.0.0097.oe1.aarch64.rpm"
        ],
        "src": [
          "kernel-4.19.90-2107.4.0.0097.oe1.src.rpm"
        ],
        "x86_64": [
          "perf-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "python3-perf-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "python2-perf-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "bpftool-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-tools-devel-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-devel-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-source-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "perf-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "kernel-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "python3-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
          "python2-perf-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
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          "kernel-tools-debuginfo-4.19.90-2107.4.0.0097.oe1.x86_64.rpm",
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        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nthere was a null pointer dereference in llcp_sock_getname in net/nfc/llcp_sock.c and reproduced it in linux-5.13.0-rc2. An unprivileged user can trigger this bug and cause denial of service.  #Root Cause After creating an nfc socket, bind the address by calling bind(), if LLCP_SAP_MAX was used as SAP, it cause the bind() failed and there would set llcp_sock-\u0026gt;service_name  as NULL.  Although bind() returns an error here, it does not affect calling other socket functions. sock_getname() would invoke llcp_sock_getname(), llcp_sock_getname copied service  name from llcp_sock-\u0026gt;service_name by memcpy but llcp_sock-\u0026gt;service_name is NULL.  #Fix the patch for this issue: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=4ac06a1e013c(CVE-2021-3587)\r\n\r\nAn issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.(CVE-2020-36385)\r\n\r\nThe vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.(CVE-2020-28097)\r\n\r\nIn kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.(CVE-2021-33624)\r\n\r\nkernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument.(CVE-2021-35039)\r\n\r\nA heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space(CVE-2021-22555)\r\n\r\nA flaw use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user detaches bluetooth dongle or other way triggers unregister bluetooth device event. A local user could use this flaw to crash the system or escalate their privileges on the system.(CVE-2021-3573)\r\n\r\nImproper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access.(CVE-2021-0129)\r\n\r\nnet/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.(CVE-2021-34693)\r\n\r\nAn issue was discovered in the Linux kernel before 5.8.2. fs/io_uring.c has a use-after-free related to io_async_task_func and ctx reference holding, aka CID-6d816e088c35.(CVE-2020-36387)\r\n\r\nA flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges.(CVE-2021-3609)\r\n\r\nIt was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.(CVE-2021-3600)",
  "id": "OESA-2021-1279",
  "modified": "2026-08-06T11:04:31Z",
  "published": "2021-07-24T11:04:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1279"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3587"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36385"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28097"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33624"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-35039"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22555"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3573"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0129"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34693"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36387"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3609"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3600"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2021-3587",
    "CVE-2020-36385",
    "CVE-2020-28097",
    "CVE-2021-33624",
    "CVE-2021-35039",
    "CVE-2021-22555",
    "CVE-2021-3573",
    "CVE-2021-0129",
    "CVE-2021-34693",
    "CVE-2020-36387",
    "CVE-2021-3609",
    "CVE-2021-3600"
  ]
}



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