cbcvebase.
CVE-2023-52618
published 2024-03-18

CVE-2023-52618: In the Linux kernel, the following vulnerability has been resolved: block/rnbd-srv: Check for unlikely string overflow Since "dev_search_path" can technically…

PriorityP426medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.74%
51.0th percentile
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).

Affected

19 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 < 95bc866c11974d3e4a9d922275ea8127ff809cf795bc866c11974d3e4a9d922275ea8127ff809cf7
linuxlinux>= 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 < f6abd5e17da33eba15df2bddc93413e76c2b55f7f6abd5e17da33eba15df2bddc93413e76c2b55f7
linuxlinux>= 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 < af7bbdac89739e2e7380387fda598848d3b7010faf7bbdac89739e2e7380387fda598848d3b7010f
linuxlinux>= 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 < 5b9ea86e662035a886ccb5c76d56793cba6188275b9ea86e662035a886ccb5c76d56793cba618827
linuxlinux>= 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 < a2c6206f18104fba7f887bf4dbbfe4c41adc4339a2c6206f18104fba7f887bf4dbbfe4c41adc4339
linuxlinux>= 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 < 9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f419e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 5.15.0-106.1165.15.0-106.116
linuxlinux_kernel>= 5.11 < 5.15.1495.15.149
linuxlinux_kernel>= 5.16 < 6.1.776.1.77
linuxlinux_kernel>= 5.8 < 5.10.2105.10.210
linuxlinux_kernel>= 6.2 < 6.6.166.6.16
linuxlinux_kernel>= 6.7 < 6.7.46.7.4

CVSS provenance

nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
osv7.5HIGH
vendor_ubuntu6.5MEDIUM
vendor_debian5.3MEDIUM
vendor_redhat5.3MEDIUM
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