Lucene search

LinuxCVE-2024-42246

HistoryAug 07, 2024 - 4:15 p.m.

CVE-2024-42246

2024-08-0716:15:47

CWE-835

Linux

web.nvd.nist.gov

linux kernel

vulnerability

syslog

kernel freeze

network system

eperm

econnrefused

enetdown

udp

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

6.4

Confidence

Low

EPSS

Percentile

5.0%

JSON

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

net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket

When using a BPF program on kernel_connect(), the call can return -EPERM. This
causes xs_tcp_setup_socket() to loop forever, filling up the syslog and causing
the kernel to potentially freeze up.

Neil suggested:

This will propagate -EPERM up into other layers which might not be ready
to handle it. It might be safer to map EPERM to an error we would be more
likely to expect from the network system - such as ECONNREFUSED or ENETDOWN.

ECONNREFUSED as error seems reasonable. For programs setting a different error
can be out of reach (see handling in 4fbac77d2d09) in particular on kernels
which do not have f10d05966196 (“bpf: Make BPF_PROG_RUN_ARRAY return -err
instead of allow boolean”), thus given that it is better to simply remap for
consistent behavior. UDP does handle EPERM in xs_udp_send_request().

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange4.17–6.1.100

linuxlinux_kernelRange6.2–6.6.41

linuxlinux_kernelRange6.7–6.9.10

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

Vendor	Product	Version	CPE
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": [
      "net/sunrpc/xprtsock.c"
    ],
    "versions": [
      {
        "version": "4fbac77d2d09",
        "lessThan": "bc7902612189",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "934247ea65bc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "02ee1976edb2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "5d8254e01299",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "f2431e7db0fe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "d6c686c01c5f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "f388cfd913a2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4fbac77d2d09",
        "lessThan": "626dfed5fa3b",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sunrpc/xprtsock.c"
    ],
    "versions": [
      {
        "version": "4.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.17",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.322",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.284",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.226",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.167",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.100",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.41",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.10",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]