01 Record

CVE-2026-72323

ipv4: igmp: Fix potential UAF in igmp_gq_start_timer()

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

ipv4: igmp: Fix potential UAF in igmp_gq_start_timer()

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.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
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

0.72% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 53.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Received. NVD last modified this record on 2026-10-16.

Red Hat severity

Important. 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

2026-08-15 05:55Z2 MO AGO

Last updated

2026-10-16 18:55Z13 DAYS AGO

Reserved

2026-08-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

6d4db09277eae2634020c8c0c87005f21599760dc5b1a3392dd1508bc8257ce6

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7265c747eec415ca3109a6a14a419f7ae433b780, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d107b4c4f8274763b7ea5ab05d45cef78e4b81ba, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 74b301f7f197517016befb5f5dfab01f7bc64be5, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 40a1e998cb266ed4cb529a0bb4fee2b0ba732702, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 165258303357e54b75fc19b341ae2a2b7c9e3910, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 75e984fe0cb9e7fbde0c8ee838c61ce8573d3ea3, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 8d4394ffa40508e0de72f464af351f6ca6a6cdc3, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7b19c0f81ed1fdaec6bc522569be367199a9edf3, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/7265c747eec415ca3109a6a14a419f7ae433b780
git.kernel.orghttps://git.kernel.org/stable/c/d107b4c4f8274763b7ea5ab05d45cef78e4b81ba
git.kernel.orghttps://git.kernel.org/stable/c/74b301f7f197517016befb5f5dfab01f7bc64be5
git.kernel.orghttps://git.kernel.org/stable/c/40a1e998cb266ed4cb529a0bb4fee2b0ba732702
git.kernel.orghttps://git.kernel.org/stable/c/165258303357e54b75fc19b341ae2a2b7c9e3910
git.kernel.orghttps://git.kernel.org/stable/c/75e984fe0cb9e7fbde0c8ee838c61ce8573d3ea3
git.kernel.orghttps://git.kernel.org/stable/c/8d4394ffa40508e0de72f464af351f6ca6a6cdc3
git.kernel.orghttps://git.kernel.org/stable/c/7b19c0f81ed1fdaec6bc522569be367199a9edf3

07 Fixed in

Debian 12

linux
Fixed in 6.1.187-1

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

Debian 13

linux
Fixed in 6.12.100-1

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

Debian 14

linux
Fixed in 7.1.5-1

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