CVE-2023-52618
Linux Kernel rnbd-srv Format String Truncation Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: block/rnbd-srv: Check for unlikely string overflow Since "dev_search_path" can technically be as large as PATH_MAX, there was a risk of truncation when copying it and a second string into "full_path" since it was also PATH_MAX sized. The W=1 builds were reporting this warning: drivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra': drivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~ In function 'rnbd_srv_get_full_path', inlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ To fix this, unconditionally check for truncation (as was already done for the case where "%SESSNAME%" was present).
INFO
Published Date :
March 18, 2024, 11:15 a.m.
Last Modified :
April 4, 2025, 2:51 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2023-52618 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2023-52618.
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).
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The following list is the news that have been mention
CVE-2023-52618 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-52618 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]
Apr. 04, 2025
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.149 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.77 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8 up to (excluding) 5.10.210 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added Reference Type CVE: https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List, Third Party Advisory -
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/5b9ea86e662035a886ccb5c76d56793cba618827 Added Reference https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7 Added Reference https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41 Added Reference https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339 Added Reference https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f Added Reference https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 06, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 04, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
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
Mar. 18, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: block/rnbd-srv: Check for unlikely string overflow Since "dev_search_path" can technically be as large as PATH_MAX, there was a risk of truncation when copying it and a second string into "full_path" since it was also PATH_MAX sized. The W=1 builds were reporting this warning: drivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra': drivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~ In function 'rnbd_srv_get_full_path', inlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ To fix this, unconditionally check for truncation (as was already done for the case where "%SESSNAME%" was present). Added Reference kernel.org https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41 [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-2023-52618 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-2023-52618
weaknesses.