01 Record

CVE-2023-53189

ipv6/addrconf: fix a potential refcount underflow for idev

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

ipv6/addrconf: fix a potential refcount underflow for idev

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 6.1% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-09-15 14:05Z1 YR AGO

Last updated

2026-10-15 21:41Z13 DAYS AGO

Reserved

2025-09-15

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

26220b4a84938fa452936b7eb97f7ddd8e68721e361e3da7f50ec313165d1567

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxb7b1bfce0bb68bd8f6e62a28295922785cc63781 to < c6395e32935d35e6f935e7caf1c2dac5a95943b4, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < df62fdcd004afa72ecbed0e862ebb983acd3aa57, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < c7eeba47058532f6077d6a658e38b6698f6ae71a, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < 2ad31ce40e8182860b631e37209e93e543790b7c, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < 82abd1c37d3bf2a2658b34772c17a25a6f9cca42, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < 436b7cc7eae7851c184b671ed7a4a64c750b86f7, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < 1f656e483eb4733d62f18dfb206a49b78f60f495, b7b1bfce0bb68bd8f6e62a28295922785cc63781 to < 06a0716949c22e2aefb648526580671197151acc, 973d5956f754cfc306f5e274d71503498f4b0324, 3.10.105 to < 3.11, 3.11—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c6395e32935d35e6f935e7caf1c2dac5a95943b4
git.kernel.orghttps://git.kernel.org/stable/c/df62fdcd004afa72ecbed0e862ebb983acd3aa57
git.kernel.orghttps://git.kernel.org/stable/c/c7eeba47058532f6077d6a658e38b6698f6ae71a
git.kernel.orghttps://git.kernel.org/stable/c/2ad31ce40e8182860b631e37209e93e543790b7c
git.kernel.orghttps://git.kernel.org/stable/c/82abd1c37d3bf2a2658b34772c17a25a6f9cca42
git.kernel.orghttps://git.kernel.org/stable/c/436b7cc7eae7851c184b671ed7a4a64c750b86f7
git.kernel.orghttps://git.kernel.org/stable/c/1f656e483eb4733d62f18dfb206a49b78f60f495
git.kernel.orghttps://git.kernel.org/stable/c/06a0716949c22e2aefb648526580671197151acc

07 Fixed in

Debian 12

linux
Fixed in 6.1.52-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.4.11-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.4.11-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.