CVE-2024-27055

2024-05-0113:15:50

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

workqueue

vulnerability

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

10.4%

JSON

In the Linux kernel, the following vulnerability has been resolved:

workqueue: Don’t call cpumask_test_cpu() with -1 CPU in wq_update_node_max_active()

For wq_update_node_max_active(), @off_cpu of -1 indicates that no CPU is
going down. The function was incorrectly calling cpumask_test_cpu() with -1
CPU leading to oopses like the following on some archs:

Unable to handle kernel paging request at virtual address ffff0002100296e0
…
pc : wq_update_node_max_active+0x50/0x1fc
lr : wq_update_node_max_active+0x1f0/0x1fc
…
Call trace:
wq_update_node_max_active+0x50/0x1fc
apply_wqattrs_commit+0xf0/0x114
apply_workqueue_attrs_locked+0x58/0xa0
alloc_workqueue+0x5ac/0x774
workqueue_init_early+0x460/0x540
start_kernel+0x258/0x684
__primary_switched+0xb8/0xc0
Code: 9100a273 35000d01 53067f00 d0016dc1 (f8607a60)
—[ end trace 0000000000000000 ]—
Kernel panic - not syncing: Attempted to kill the idle task!
—[ end Kernel panic - not syncing: Attempted to kill the idle task! ]—

Fix it.

Affected configurations

Vulners

Node

linuxlinux_kernelRange6.6.23–6.6.25

linuxlinux_kernelRange6.8.2–6.8.4

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/workqueue.c"
    ],
    "versions": [
      {
        "version": "5a70baec2294",
        "lessThan": "7df62b8cca38",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5a70baec2294",
        "lessThan": "a75ac2693d73",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fc67aebe34f2",
        "lessThan": "38c19c44cc05",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "843288afd3cc",
        "lessThan": "9fc557d489f8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "843288afd3cc",
        "lessThan": "adc646d21269",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5797b1c18919",
        "lessThan": "15930da42f89",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/workqueue.c"
    ],
    "versions": [
      {
        "version": "6.6.23",
        "lessThan": "6.6.25",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "6.8.2",
        "lessThan": "6.8.4",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]