{
  "threat_severity" : "Low",
  "public_date" : "2024-04-17T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: wifi: mt76: mt7921e: fix use-after-free in free_irq()",
    "id" : "2275666",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2275666"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.4",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nwifi: mt76: mt7921e: fix use-after-free in free_irq()\nFrom commit a304e1b82808 (\"[PATCH] Debug shared irqs\"), there is a test\nto make sure the shared irq handler should be able to handle the unexpected\nevent after deregistration. For this case, let's apply MT76_REMOVED flag to\nindicate the device was removed and do not run into the resource access\nanymore.\nBUG: KASAN: use-after-free in mt7921_irq_handler+0xd8/0x100 [mt7921e]\nRead of size 8 at addr ffff88824a7d3b78 by task rmmod/11115\nCPU: 28 PID: 11115 Comm: rmmod Tainted: G        W    L    5.17.0 #10\nHardware name: Micro-Star International Co., Ltd. MS-7D73/MPG B650I\nEDGE WIFI (MS-7D73), BIOS 1.81 01/05/2024\nCall Trace:\n<TASK>\ndump_stack_lvl+0x6f/0xa0\nprint_address_description.constprop.0+0x1f/0x190\n? mt7921_irq_handler+0xd8/0x100 [mt7921e]\n? mt7921_irq_handler+0xd8/0x100 [mt7921e]\nkasan_report.cold+0x7f/0x11b\n? mt7921_irq_handler+0xd8/0x100 [mt7921e]\nmt7921_irq_handler+0xd8/0x100 [mt7921e]\nfree_irq+0x627/0xaa0\ndevm_free_irq+0x94/0xd0\n? devm_request_any_context_irq+0x160/0x160\n? kobject_put+0x18d/0x4a0\nmt7921_pci_remove+0x153/0x190 [mt7921e]\npci_device_remove+0xa2/0x1d0\n__device_release_driver+0x346/0x6e0\ndriver_detach+0x1ef/0x2c0\nbus_remove_driver+0xe7/0x2d0\n? __check_object_size+0x57/0x310\npci_unregister_driver+0x26/0x250\n__do_sys_delete_module+0x307/0x510\n? free_module+0x6a0/0x6a0\n? fpregs_assert_state_consistent+0x4b/0xb0\n? rcu_read_lock_sched_held+0x10/0x70\n? syscall_enter_from_user_mode+0x20/0x70\n? trace_hardirqs_on+0x1c/0x130\ndo_syscall_64+0x5c/0x80\n? trace_hardirqs_on_prepare+0x72/0x160\n? do_syscall_64+0x68/0x80\n? trace_hardirqs_on_prepare+0x72/0x160\nentry_SYSCALL_64_after_hwframe+0x44/0xae" ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-06-05T00:00:00Z",
    "advisory" : "RHSA-2024:3627",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-06-05T00:00:00Z",
    "advisory" : "RHSA-2024:3618",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.5.1.el8_10"
  }, {
    "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"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Extended Update Support",
    "release_date" : "2025-05-14T00:00:00Z",
    "advisory" : "RHSA-2025:7526",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.4",
    "package" : "kernel-0:5.14.0-427.68.1.el9_4"
  } ],
  "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 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2024-26892\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26892\nhttps://lore.kernel.org/linux-cve-announce/2024041743-CVE-2024-26892-809e@gregkh/T" ],
  "name" : "CVE-2024-26892",
  "csaw" : false
}