CVE-2023-52596
published 2024-03-06CVE-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…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
13.6th percentile
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.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.7.7-1 (forky) | linux 6.7.7-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c < 15893975e9e382f8294ea8d926f08dc2d8d39ede | 15893975e9e382f8294ea8d926f08dc2d8d39ede |
| linux | linux | >= 9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c < 2ae7081bc10123b187e36a4f3a8e53768de31489 | 2ae7081bc10123b187e36a4f3a8e53768de31489 |
| linux | linux | >= 9edbfe92a0a1355bae1e47c8f542ac0d39f19f8c < 315552310c7de92baea4e570967066569937a843 | 315552310c7de92baea4e570967066569937a843 |
| linux | linux_kernel | < 6.6.16 | 6.6.16 |
| linux | linux_kernel | >= 0 < 6.7.7-1 | 6.7.7-1 |
| linux | linux_kernel | >= 0 < 6.7.7-1 | 6.7.7-1 |
| linux | linux_kernel | >= 6.7 < 6.7.4 | 6.7.4 |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-ffqx-hmw2-p5jv: In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix out of bounds access for empty sysctl registers
When registering tab
ghsa_unreviewed·2024-03-06
CVE-2023-52596 [MEDIUM] CWE-787 GHSA-ffqx-hmw2-p5jv: In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix out of bounds access for empty sysctl registers
When registering tab
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.
OSV
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 table
osv·2024-03-06·CVSS 5.5
CVE-2023-52596 [MEDIUM] 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 table
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.
Microsoft
sysctl: Fix out of bounds access for empty sysctl registers
vendor_msrc·2024-03-12·CVSS 5.5
CVE-2023-52596 [MEDIUM] CWE-787 sysctl: Fix out of bounds access for empty sysctl registers
sysctl: Fix out of bounds access for empty sysctl registers
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Red Hat
kernel: sysctl: Fix out of bounds access for empty sysctl registers
vendor_redhat·2024-03-06·CVSS 5.5
CVE-2023-52596 [MEDIUM] CWE-125 kernel: sysctl: Fix out of bounds access for empty sysctl registers
kernel: sysctl: Fix out of bounds access for empty sysctl registers
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.
An out of bounds access flaw was found in empty sysctl registers in t
Debian
CVE-2023-52596: linux - In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix...
vendor_debian·2023·CVSS 5.5
CVE-2023-52596 [MEDIUM] CVE-2023-52596: linux - In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved (fixed in 6.7.7-1)
sid: resolved (fixed in 6.7.7-1)
trixie: resolved (fi
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39edehttps://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39edehttps://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843
2024-03-06
Published