CVE-2024-50132

MEDIUM EPSS 11.6%
Published Nov 5, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Nov 5, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/probes: Fix MAX_TRACE_ARGS limit handling When creating a trace_probe we would set nr_args prior to truncating the arguments to MAX_TRACE_ARGS. However, we would only initialize arguments up to the limit. This caused invalid memory access when attempting to set up probes with more than 128 fetchargs. BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 1769 Comm: cat Not tainted 6.11.0-rc7+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014 RIP: 0010:__set_print_fmt+0x134/0x330 Resolve the issue by applying the MAX_TRACE_ARGS limit earlier. Return an error when there are too many arguments instead of silently truncating.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
11.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥6.9  –  <6.11.6
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/08ccd1a57c4d3882e9a877eb2dcc66e50a3b0279
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6bc24db74fe4788cc7c2f30a113fc6aafba225a3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/73f35080477e893aa6f4c8d388352b871b288fbc
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/08ccd1a57c4d3882e9a877eb2dcc66e50a3b0279
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6bc24db74fe4788cc7c2f30a113fc6aafba225a3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/73f35080477e893aa6f4c8d388352b871b288fbc
    Patch