What is CVE-2024-43839?

CVE-2024-43839 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787), affecting Linux kernel versions from 2.6.37 onward and patched in 4.19.320, 5.4.282, 5.10.224 and others. CVE-2024-43839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-43839?

CVE-2024-43839 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2024-43839?

Yes, CVE-2024-43839 has been patched. Fixed versions include 4.19.320, 5.4.282, 5.10.224 and others. If you are running Linux kernel 2.6.37 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-43839 actively exploited?

CVE-2024-43839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2024-43839

High

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.

Package Linux Kernel

Published 2024-08-17

Last modified 2026-03-27

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-787

CVE-2024-43839 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.37 and later are affected. Fixed in 4.19.320, 5.4.282, 5.10.224, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11 and their respective stable series.

Affected from

≥ 2.6.37

Fixed in

✓ 4.19.320 4.19.x ✓ 5.4.282 5.4.x ✓ 5.10.224 5.10.x ✓ 5.15.165 5.15.x ✓ 6.1.103 6.1.x ✓ 6.6.44 6.6.x ✓ 6.10.3 6.10.x ✓ 6.11

References

10 total

Kernel Git
https://git.kernel.org/stable/c/6ce46045f9b90d952602e2c0b8886cfadf860bf1

Patch
Kernel Git
https://git.kernel.org/stable/c/6d20c4044ab4d0e6a99aa35853e66f0aed5589e3

Patch
Kernel Git
https://git.kernel.org/stable/c/ab748dd10d8742561f2980fea08ffb4f0cacfdef

Patch
Kernel Git
https://git.kernel.org/stable/c/b0ff0cd0847b03c0a0abe20cfa900eabcfcb9e43

Patch
Kernel Git
https://git.kernel.org/stable/c/c90b1cd7758fd4839909e838ae195d19f8065d76

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2024-43839

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-08-17

Modified 2026-03-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-43839?

CVE-2024-43839 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 2.6.37 onward and has been patched in 4.19.320, 5.4.282, 5.10.224 and others. CVE-2024-43839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-43839?

CVE-2024-43839 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2024-43839?

Yes. CVE-2024-43839 has been patched. Fixed versions include 4.19.320, 5.4.282, 5.10.224 and others. If you are running Linux kernel 2.6.37 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-43839 actively exploited?

No. CVE-2024-43839 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.