CVE-2026-63986

ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure

MEDIUM
5.5
CVSS Score
Published: July 19, 2026 at 02:56 PM UTC
Updated: October 8, 2026 at 02:47 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure The goto err label leads to: genlmsg_cancel(skb, ehdr); return ret; If ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg. There's nothing to cancel, and passing an error pointer to genlmsg_cancel() would cause a crash.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.14 ≤ v < 6.18.356.19 ≤ v < 7.0.12*6.147.17.1 rc17.1 rc27.1 rc37.1 rc47.1 rc5b9e3f7dc9ed95daeb83cfa45b821cacaa01aa906
Vendor states this is fixed in 2008f9bb1ede9b688624a241228b8e54fc74f0f6 (fixed)
Vendor states this is fixed in c3fc9976f686f9a95baf87db9d387f218fd65394 (fixed)
Vendor states this is fixed in d0d2c5ccd1de28368cebeef74d9c530a60eff9a5 (fixed)
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.18.35 (unaffected)
Vendor states this is fixed in 7.0.12 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfoCWE-763

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