🛡️ CVE-2024-50227 — kernel

🟠 CVSS 7.1 — High ✅ No Known Exploit NVD
7.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()

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

thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()

KASAN reported following issue:

BUG: KASAN: stack-out-of-bounds in tb_retimer_scan+0xffe/0x1550 [thunderbolt]

Read of size 4 at addr ffff88810111fc1c by task kworker/u56:0/11

CPU: 0 UID: 0 PID: 11 Comm: kworker/u56:0 Tainted: G U 6.11.0+ #1387

Tainted: [U]=USER

Workqueue: thunderbolt0 tb_handle_hotplug [thunderbolt]

Call Trace:

<TASK>

dump_stack_lvl+0x6c/0x90

print_report+0xd1/0x630

kasan_report+0xdb/0x110

__asan_report_load4_noabort+0x14/0x20

tb_retimer_scan+0xffe/0x1550 [thunderbolt]

tb_scan_port+0xa6f/0x2060 [thunderbolt]

tb_handle_hotplug+0x17b1/0x3080 [thunderbolt]

process_one_work+0x626/0x1100

worker_thread+0x6c8/0xfa0

kthread+0x2c8/0x3a0

ret_from_fork+0x3a/0x80

ret_from_fork_asm+0x1a/0x30

This happens because the loop variable still gets incremented by one so

max becomes 3 instead of 2, and this makes the second loop read past the

the array declared on the stack.

Fix this by assigning to max directly in the loop body.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

Affected software

CVE-2024-50227 is recorded against 2 packages.

  • kernel (from 6.11.0 up to 6.11.7)
  • linux-kernel

Timeline and source

Published on 9 November 2024 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-50227 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.1
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-11-09
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.11.0 6.11.7
linux-kernel — —

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