In the Linux kernel, the following vulnerability has been resolved: bna: adjust 'name' buf size of bna_tcb and bna_ccb structures To have enough space to write all possible sprintf() args. Currently 'name' size is 16, but the first '%s' specifier may already need at least 16 characters, since 'bnad->netdev->name' is used there. For '%d' specifiers, assume that they require: * 1 char for 'tx_id + tx_info->tcb[i]->id' sum, BNAD_MAX_TXQ_PER_TX is 8 * 2 chars for 'rx_id + rx_info->rx_ctrl[i].ccb->id', BNAD_MAX_RXP_PER_RX is 16 And replace sprintf with snprintf. Detected using the static analysis tool - Svace.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/6ce46045f9b90d952602e2c0b8886cfadf860bf1 cve-icon cve-icon
https://git.kernel.org/stable/c/6d20c4044ab4d0e6a99aa35853e66f0aed5589e3 cve-icon cve-icon
https://git.kernel.org/stable/c/ab748dd10d8742561f2980fea08ffb4f0cacfdef cve-icon cve-icon
https://git.kernel.org/stable/c/b0ff0cd0847b03c0a0abe20cfa900eabcfcb9e43 cve-icon cve-icon
https://git.kernel.org/stable/c/c90b1cd7758fd4839909e838ae195d19f8065d76 cve-icon cve-icon
https://git.kernel.org/stable/c/c9741a03dc8e491e57b95fba0058ab46b7e506da cve-icon cve-icon
https://git.kernel.org/stable/c/e0f48f51d55fb187400e9787192eda09fa200ff5 cve-icon cve-icon
https://git.kernel.org/stable/c/f121740f69eda4da2de9a20a6687a13593e72540 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html cve-icon
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html cve-icon
https://lore.kernel.org/linux-cve-announce/2024081729-CVE-2024-43839-ea03@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-43839 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-43839 cve-icon
History

Mon, 03 Nov 2025 22:30:00 +0000

Type Values Removed Values Added
References

Wed, 30 Oct 2024 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-787
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Tue, 17 Sep 2024 10:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H'}

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 19 Aug 2024 19:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 19 Aug 2024 04:45:00 +0000

Type Values Removed Values Added
References

Sat, 17 Aug 2024 09:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: bna: adjust 'name' buf size of bna_tcb and bna_ccb structures To have enough space to write all possible sprintf() args. Currently 'name' size is 16, but the first '%s' specifier may already need at least 16 characters, since 'bnad->netdev->name' is used there. For '%d' specifiers, assume that they require: * 1 char for 'tx_id + tx_info->tcb[i]->id' sum, BNAD_MAX_TXQ_PER_TX is 8 * 2 chars for 'rx_id + rx_info->rx_ctrl[i].ccb->id', BNAD_MAX_RXP_PER_RX is 16 And replace sprintf with snprintf. Detected using the static analysis tool - Svace.
Title bna: adjust 'name' buf size of bna_tcb and bna_ccb structures
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-08-17T09:21:55.085Z

Updated: 2025-11-03T22:05:32.856Z

Reserved: 2024-08-17T09:11:59.274Z

Link: CVE-2024-43839

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:23.077Z

cve-icon NVD

Status : Modified

Published: 2024-08-17T10:15:09.447

Modified: 2025-11-03T22:18:09.877

Link: CVE-2024-43839

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-08-17T00:00:00Z

Links: CVE-2024-43839 - Bugzilla