vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-43321

bpf: Properly mark live registers for indirect jumps

HIGH
7.8
CVSS Score
Published: May 8, 2026 at 01:26 PM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Properly mark live registers for indirect jumps For a `gotox rX` instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this.

Affected

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

Linux Kernel· Linux
95%
6.19 ≤ v < 6.19.6493d9e0d608339a32f568504d5fd411a261bb0af6.197.07.0 rc17.0 rc27.0 rc37.0 rc47.0 rc57.0 rc67.0 rc7
Vendor states this is fixed in 7beae54111c34ca63357ef120e115889b915beb5 (fixed)
Vendor states this is fixed in d1aab1ca576c90192ba961094d51b0be6355a4d6 (fixed)
Vendor states this is fixed in 6.19 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Source: cverecord
https://git.kernel.org/stable/c/df02c3ff3be4bf998812c8c8e79d10db1329d535
Patch
Source: cverecord
https://git.kernel.org/stable/c/7beae54111c34ca63357ef120e115889b915beb5
Patch
Source: cverecord
https://git.kernel.org/stable/c/d1aab1ca576c90192ba961094d51b0be6355a4d6

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-682

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card