CVE-2026-64342: USB: iowarrior: fix use-after-free on disconnect

High 7.8 EPSS 0.1% Linux kernel

In the Linux kernel, the following vulnerability has been resolved: USB: iowarrior: fix use-after-free on disconnect Submitted write URBs are not stopped on close() and therefore need to be stopped unconditionally on disconnect() to avoid use-after-free in the completion handler.

CVE-2026-64342CVE identifier
7.8CVSS 3.1 base score (high)
0.1%EPSS: chance of exploitation in the next 30 days (higher than 2% of CVEs)
2026-07-25published

What do these terms mean? CVE · CVSS score · exploited (KEV) · EPSS · backported fix · all terms

What to do now

Check whether you run Linux kernel and which version (commands below).
Install the fixed version for your system: see “Patch it” below.
Reboot into the new kernel (uname -r to confirm); live patching (kpatch, Ubuntu Livepatch, SUSE kGraft/klp) can defer the reboot for some CVEs

Affected and fixed versions

Affected:

Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before d058d377291567b72aea33b017215cbfb383b0ad
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before a7bbe946ca3a6eeb6f364d5e84b05e02c7c0d595
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before 97ad9337127be04ca0b027c2b01e69302353f404
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before 164398601a7f160bc3df1efa454f983302cef03f
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before f328b0e9a0dbd162f5db1b83026b689f2fea2241
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before b748f97aff339e7f08dca9cf38a05b980fb66fea
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before e4596816984efc537e7c04c1af0c639394f967f7
Linux Linux 946b960d13c15f050a3b848987aaca79f6a459b7 to before bc0e4f16c44e50daa0b1ea729934baa3b4815dee
Linux Linux 2.6.21

Patch it

Use the commands for your system. Distribution packages often keep an older version number with the fix backported, so compare with the fixed package versions in the table below, not only with the upstream version.

Debian

sudo apt update
sudo apt install --only-upgrade linux-image-amd64

Ubuntu

sudo apt update
sudo apt install --only-upgrade linux-image-generic (or the installed flavour: linux-image-aws, -azure, -gcp, -virtual)

RHEL, AlmaLinux, Rocky, Oracle

sudo dnf upgrade --refresh kernel

Fedora

sudo dnf upgrade --refresh kernel

SUSE / openSUSE

sudo zypper refresh
sudo zypper update kernel-default

Amazon Linux

sudo dnf upgrade --releasever=latest kernel kernel6.12

Arch Linux

sudo pacman -Syu

Alpine

apk update && apk upgrade linux-lts linux-virt

FreeBSD

not Linux

General update steps for every system are on the Linux and Unix & BSD pages; after updating, see which services to restart.

Fix status in Linux distributions

Release	Package	Status	Fixed version / advisory
Debian 12	`linux`	fixed	`6.1.180-1`
Debian 13	`linux`	fixed	`6.12.96-1`
Debian testing	`linux`	fixed	`7.1.4-1`
Debian 12	`linux-6.12`	fixed	`6.12.100-1~deb12u1`
Red Hat Enterprise Linux 9	`kernel`	affected
Red Hat Enterprise Linux 9	`kernel-rt`	affected
Red Hat Enterprise Linux 8	`kernel`	affected
Red Hat Enterprise Linux 8	`kernel-rt`	affected
Red Hat Enterprise Linux 7	`kernel`	affected
Red Hat Enterprise Linux 7	`kernel-rt`	affected
Red Hat Enterprise Linux 6	`kernel`	out of support scope
Red Hat Enterprise Linux 10	`kernel`	affected

From the Debian security tracker, Ubuntu CVE tracker and Red Hat Security Data API, refreshed every few hours.

Sources

Page generated automatically from official sources on 2026-11-03 18:05 UTC. Always confirm with your vendor's advisory.