CVE-2026-5435 · cross-distro fix matrix

CVE-2026-5435: It was discovered that the GNU C Library iconv function incorrectly handled

Affects 3 Linux releases across 50 (distro × package) combinations. First disclosed: 2026-04-28.

CVSS v3:HIGH · 7.3(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-5435 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

glibc→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y glibc

glibc-doc→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y glibc-doc

glibc-source→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y glibc-source

libc-bin→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc-bin

libc-dev-bin→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc-dev-bin

libc-devtools→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc-devtools

libc6→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6

libc6-amd64→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-amd64

libc6-dev→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev

libc6-dev-amd64→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-amd64

libc6-dev-i386→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-i386

libc6-dev-s390→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-s390

libc6-dev-x32→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-x32

libc6-i386→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-i386

libc6-prof→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-prof

libc6-s390→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-s390

libc6-x32→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y libc6-x32

locales→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y locales

locales-all→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y locales-all

nscd→ fixed in2.35-0ubuntu3.14USN-8611-1

sudo apt-get install --only-upgrade -y nscd

Ubuntu noble

Source: Ubuntu USN

glibc→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y glibc

glibc-doc→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y glibc-doc

glibc-source→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y glibc-source

libc-bin→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc-bin

libc-dev-bin→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc-dev-bin

libc-devtools→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc-devtools

libc6→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6

libc6-amd64→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-amd64

libc6-dev→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev

libc6-dev-amd64→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-amd64

libc6-dev-i386→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-i386

libc6-dev-s390→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-s390

libc6-dev-x32→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-x32

libc6-i386→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-i386

libc6-s390→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-s390

libc6-x32→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y libc6-x32

locales→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y locales

locales-all→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y locales-all

nscd→ fixed in2.39-0ubuntu8.8USN-8611-1

sudo apt-get install --only-upgrade -y nscd

Ubuntu resolute

Source: Ubuntu USN

glibc→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y glibc

glibc-doc→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y glibc-doc

glibc-source→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y glibc-source

libc-bin→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc-bin

libc-dev-bin→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc-dev-bin

libc-devtools→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc-devtools

libc-gconv-modules-extra→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc-gconv-modules-extra

libc6→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc6

libc6-amd64→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc6-amd64

libc6-dev→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev

libc6-dev-amd64→ fixed in2.43-2ubuntu2.3USN-8611-1

sudo apt-get install --only-upgrade -y libc6-dev-amd64

Are YOU affected by CVE-2026-5435?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

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