{
  "threat_severity" : "Low",
  "public_date" : "2024-05-22T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()",
    "id" : "2282901",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2282901"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-99",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ncan: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()\nUsing wait_event_interruptible() to wait for complete transmission,\nbut do not check the result of wait_event_interruptible() which can be\ninterrupted. It will result in TX buffer has multiple accessors and\nthe later process interferes with the previous process.\nFollowing is one of the problems reported by syzbot.\n=============================================================\nWARNING: CPU: 0 PID: 0 at net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0\nCPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.13.0-rc7+ #68\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014\nRIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0\nCall Trace:\n<IRQ>\n? isotp_setsockopt+0x390/0x390\n__hrtimer_run_queues+0xb8/0x610\nhrtimer_run_softirq+0x91/0xd0\n? rcu_read_lock_sched_held+0x4d/0x80\n__do_softirq+0xe8/0x553\nirq_exit_rcu+0xf8/0x100\nsysvec_apic_timer_interrupt+0x9e/0xc0\n</IRQ>\nasm_sysvec_apic_timer_interrupt+0x12/0x20\nAdd result check for wait_event_interruptible() in isotp_sendmsg()\nto avoid multiple accessers for tx buffer." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-11-12T00:00:00Z",
    "advisory" : "RHSA-2024:9315",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-503.11.1.el9_5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-11-12T00:00:00Z",
    "advisory" : "RHSA-2024:9315",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-503.11.1.el9_5"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-47457\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47457\nhttps://lore.kernel.org/linux-cve-announce/2024052244-CVE-2021-47457-d807@gregkh/T" ],
  "name" : "CVE-2021-47457",
  "csaw" : false
}