CVE-2024-26752
Linux kernel L2TP IPv6 Message Length Integer Overflow
Description
In the Linux kernel, the following vulnerability has been resolved: l2tp: pass correct message length to ip6_append_data l2tp_ip6_sendmsg needs to avoid accounting for the transport header twice when splicing more data into an already partially-occupied skbuff. To manage this, we check whether the skbuff contains data using skb_queue_empty when deciding how much data to append using ip6_append_data. However, the code which performed the calculation was incorrect: ulen = len + skb_queue_empty(&sk->sk_write_queue) ? transhdrlen : 0; ...due to C operator precedence, this ends up setting ulen to transhdrlen for messages with a non-zero length, which results in corrupted packets on the wire. Add parentheses to correct the calculation in line with the original intent.
INFO
Published Date :
April 3, 2024, 5:15 p.m.
Last Modified :
March 17, 2025, 4:57 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26752.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26752 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26752 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-131 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19.296 up to (excluding) 4.19.308 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.4.258 up to (excluding) 5.4.270 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10.198 up to (excluding) 5.10.211 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.135 up to (excluding) 5.15.150 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.57 up to (excluding) 6.1.80 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6 up to (excluding) 6.6.19 *cpe:2.3:o:linux:linux_kernel:4.14.327:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.5.7:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added Reference Type CVE: https://git.kernel.org/stable/c/0da15a70395182ee8cb75716baf00dddc0bea38d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0da15a70395182ee8cb75716baf00dddc0bea38d Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/13cd1daeea848614e585b2c6ecc11ca9c8ab2500 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/13cd1daeea848614e585b2c6ecc11ca9c8ab2500 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4c3ce64bc9d36ca9164dd6c77ff144c121011aae Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4c3ce64bc9d36ca9164dd6c77ff144c121011aae Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/804bd8650a3a2bf3432375f8c97d5049d845ce56 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/804bd8650a3a2bf3432375f8c97d5049d845ce56 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/83340c66b498e49353530e41542500fc8a4782d6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/83340c66b498e49353530e41542500fc8a4782d6 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/c1d3a84a67db910ce28a871273c992c3d7f9efb5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c1d3a84a67db910ce28a871273c992c3d7f9efb5 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/dcb4d14268595065c85dc5528056713928e17243 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/dcb4d14268595065c85dc5528056713928e17243 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Types: Mailing List -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0da15a70395182ee8cb75716baf00dddc0bea38d Added Reference https://git.kernel.org/stable/c/13cd1daeea848614e585b2c6ecc11ca9c8ab2500 Added Reference https://git.kernel.org/stable/c/359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79 Added Reference https://git.kernel.org/stable/c/4c3ce64bc9d36ca9164dd6c77ff144c121011aae Added Reference https://git.kernel.org/stable/c/804bd8650a3a2bf3432375f8c97d5049d845ce56 Added Reference https://git.kernel.org/stable/c/83340c66b498e49353530e41542500fc8a4782d6 Added Reference https://git.kernel.org/stable/c/c1d3a84a67db910ce28a871273c992c3d7f9efb5 Added Reference https://git.kernel.org/stable/c/dcb4d14268595065c85dc5528056713928e17243 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 05, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 27, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 03, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: l2tp: pass correct message length to ip6_append_data l2tp_ip6_sendmsg needs to avoid accounting for the transport header twice when splicing more data into an already partially-occupied skbuff. To manage this, we check whether the skbuff contains data using skb_queue_empty when deciding how much data to append using ip6_append_data. However, the code which performed the calculation was incorrect: ulen = len + skb_queue_empty(&sk->sk_write_queue) ? transhdrlen : 0; ...due to C operator precedence, this ends up setting ulen to transhdrlen for messages with a non-zero length, which results in corrupted packets on the wire. Add parentheses to correct the calculation in line with the original intent. Added Reference kernel.org https://git.kernel.org/stable/c/4c3ce64bc9d36ca9164dd6c77ff144c121011aae [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c1d3a84a67db910ce28a871273c992c3d7f9efb5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/dcb4d14268595065c85dc5528056713928e17243 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0da15a70395182ee8cb75716baf00dddc0bea38d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/13cd1daeea848614e585b2c6ecc11ca9c8ab2500 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/804bd8650a3a2bf3432375f8c97d5049d845ce56 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/83340c66b498e49353530e41542500fc8a4782d6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/359e54a93ab43d32ee1bff3c2f9f10cb9f6b6e79 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26752 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26752
weaknesses.