CVE-2023-52618 (GCVE-0-2023-52618)
Vulnerability from cvelistv5
Published
2024-03-18 10:19
Modified
2026-05-11 19:30
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
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
Impacted products
Vendor Product Version
Linux Linux Version: 2de6c8de192b9341ffa5e84afe1ce6196d4eef41
Version: 2de6c8de192b9341ffa5e84afe1ce6196d4eef41
Version: 2de6c8de192b9341ffa5e84afe1ce6196d4eef41
Version: 2de6c8de192b9341ffa5e84afe1ce6196d4eef41
Version: 2de6c8de192b9341ffa5e84afe1ce6196d4eef41
Version: 2de6c8de192b9341ffa5e84afe1ce6196d4eef41
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