CVE-2024-50156

MEDIUM EPSS 11.9%
Published Nov 7, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Nov 7, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs() If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() function _does_ have code to try to handle it with: if (*reg) dump_addr = *reg; ...but since "dump_addr" is initialized to NULL the above is actually a noop. The code then goes on to dereference `dump_addr`. Make the function print "Registers not stored" when it sees a NULL to solve this. Since we're touching the code, fix msm_disp_state_print_regs() not to pointlessly take a double-pointer and properly mark the pointer as `const`. Patchwork: https://patchwork.freedesktop.org/patch/619657/

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
11.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.14  –  <5.15.170
linuxlinux_kernel*≥5.16  –  <6.1.115
linuxlinux_kernel*≥6.2  –  <6.6.59
linuxlinux_kernel*≥6.7  –  <6.11.6
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/293f53263266bc4340d777268ab4328a97f041fa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/42cf045086feae77b212f0f66e742b91a5b566b7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/563aa81fd66a4e7e6e551a0e02bcc23957cafe2f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e8e9f2a12a6214080c8ea83220a596f6e1dedc6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f7ad916273483748582d97cfa31054ccb19224f3
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/293f53263266bc4340d777268ab4328a97f041fa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/42cf045086feae77b212f0f66e742b91a5b566b7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/563aa81fd66a4e7e6e551a0e02bcc23957cafe2f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e8e9f2a12a6214080c8ea83220a596f6e1dedc6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f7ad916273483748582d97cfa31054ccb19224f3
    Patch