CVE-2023-52596
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix out of bounds access for empty sysctl registers When registering tables to the sysctl subsystem there is a check to see if header is a permanently empty directory (used for…
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix out of bounds access for empty sysctl registers When registering tables to the sysctl subsystem there is a check to see if header is a permanently empty directory (used for mounts). This check evaluates the first element of the ctl_table. This results in an out of bounds evaluation when registering empty directories. The function register_sysctl_mount_point now passes a ctl_table of size 1 instead of size 0. It now relies solely on the type to identify a permanently empty register. Make sure that the ctl_table has at least one element before testing for permanent emptiness.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39edeMailing List, Patch
- https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489Mailing List, Patch
- https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843Mailing List, Patch
- https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39edeMailing List, Patch
- https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489Mailing List, Patch
- https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843Mailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.