01 Record

CVE-2026-31474

can: isotp: fix tx.buf use-after-free in isotp_sendmsg()

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

can: isotp: fix tx.buf use-after-free in isotp_sendmsg()

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.10% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 1.2% of scored records. A rank, not a probability.
NVD base score: 7.8 (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:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-15.
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

2026-04-22 13:54Z4 MO AGO

Last updated

2026-08-05 12:22Z1 MO AGO

Reserved

2026-03-09

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-416Use After FreeVariant
CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

a5c1cfb0728aa83aceddd967b33666f0bca5bb1ef0fdce1dd2f8a5df285d20e3

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux96d1c81e6a0478535342dff6c730adb076cd84e8 to < cb3d6efa78460e6d50bf68806d0db66265709f64, 96d1c81e6a0478535342dff6c730adb076cd84e8 to < 9649d051e54413049c009638ec1dc23962c884a4, 96d1c81e6a0478535342dff6c730adb076cd84e8 to < eec8a1b18a79600bd4419079dc0026c1db72a830, 96d1c81e6a0478535342dff6c730adb076cd84e8 to < 2e62e7051eca75a7f2e3d52d62ec10d7d7aa358c, 96d1c81e6a0478535342dff6c730adb076cd84e8 to < 424e95d62110cdbc8fd12b40918f37e408e35a92, 6.4—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/cb3d6efa78460e6d50bf68806d0db66265709f64
git.kernel.orghttps://git.kernel.org/stable/c/9649d051e54413049c009638ec1dc23962c884a4
git.kernel.orghttps://git.kernel.org/stable/c/eec8a1b18a79600bd4419079dc0026c1db72a830
git.kernel.orghttps://git.kernel.org/stable/c/2e62e7051eca75a7f2e3d52d62ec10d7d7aa358c
git.kernel.orghttps://git.kernel.org/stable/c/424e95d62110cdbc8fd12b40918f37e408e35a92
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-31474vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2460646https://bugzilla.redhat.com/show_bug.cgi?id=2460646issue-trackingx_refsource_REDHAT
security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31474.jsonx_sadp-csaf-vex
access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:27731vendor-advisoryx_refsource_REDHAT
access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:27288vendor-advisoryx_refsource_REDHAT
access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:27789vendor-advisoryx_refsource_REDHAT

01 Record index

CVE-2026-31474

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31474

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References