CVE-2024-50058

Published Oct 21, 2024

Last updated 9 days ago

CVSS medium 5.5

Overview

Description: In the Linux kernel, the following vulnerability has been resolved: serial: protect uart_port_dtr_rts() in uart_shutdown() too Commit af224ca2df29 (serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports. Or it cannot be NULL at this point at all for some reason :P. Until the above is investigated, stay on the safe side and move this dereference to the if too. I got this inconsistency from Coverity under CID 1585130. Thanks.
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 5.5
Impact score: 3.6
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity: MEDIUM

Weaknesses

nvd@nist.gov: CWE-476

Hype score: Not currently trending

Configurations

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  {
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      {
        "negate": false,
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            "versionEndExcluding": "6.6.57"
          },
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        "operator": "OR"
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]

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

References