CVE-2023-52618 Affecting kernel-azure package, versions <5.14.21-150500.33.57.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-SLES155-KERNELAZURE-7253193
- published14 Jun 2024
- disclosed13 Jun 2024
Introduced: 13 Jun 2024
CVE-2023-52618 (opens in a new tab)How to fix?
Upgrade SLES:15.5 kernel-azure to version 5.14.21-150500.33.57.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-azure package and not the kernel-azure package as distributed by SLES.
See How to fix? for SLES:15.5 relevant fixed versions and status.
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).
References
- https://www.suse.com/security/cve/CVE-2023-52618.html
- https://bugzilla.suse.com/1221615
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827
- https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7
- https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41
- https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339
- https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f
- https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7