CVE-2023-52618

Medium

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).

Package Linux Kernel
Published 2024-03-18
Last modified 2025-04-04
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.3

out of 10
Medium
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected versions

Linux kernel versions 5.8 and later are affected. Fixed in 5.10.210, 5.15.149, 6.1.77, 6.6.16, 6.7.4, 6.8 and their respective stable series.

Affected from
≥ 5.8
Fixed in
✓ 5.10.210 5.10.x ✓ 5.15.149 5.15.x ✓ 6.1.77 6.1.x ✓ 6.6.16 6.6.x ✓ 6.7.4 6.7.x ✓ 6.8

References

7 total
Showing 5 of 7 references View all on NVD

Frequently asked questions

  • What is CVE-2023-52618?

    CVE-2023-52618 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 . It affects Linux kernel versions from 5.8 onward and has been patched in 5.10.210, 5.15.149, 6.1.77 and others. CVE-2023-52618 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52618?

    CVE-2023-52618 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N .

  • Is there a patch available for CVE-2023-52618?

    Yes. CVE-2023-52618 has been patched. Fixed versions include 5.10.210, 5.15.149, 6.1.77 and others. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52618 actively exploited?

    No. CVE-2023-52618 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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