CVE-2026-46333: In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' l

Q: How do I fix CVE-2026-46333?

linux kernel: upgrade to 3.17, 4.5, 4.9, 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.89, 6.18.31, 7.0.8; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2026-46333 being exploited?

CVE-2026-46333 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-46333 affect?

CVE-2026-46333 affects linux kernel, debian linux. Severity is high (CVSS 7.1). In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core

Q: How urgent is CVE-2026-46333?

Priority 58/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference; On your watchlist

This month

HIGH 7.1WATCHLISTUPGRADEMITIGATE

CVE-2026-46333 is a high-severity flaw (CVSS 7.1) affecting linux kernel, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core dump or not - and makes no sense when you don't have an associated mm. And almost all users do in fact use it only for the case where the task has a mm pointer. But we have one odd special case: ptrace_may_a

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	4.3% (top 9%)
CISA exploited list	No
Weakness	CWE-269
Published	2026-05-15
Last modified	2026-10-15

Publisher (CNA): kernel.org · Vendor: debian · linux

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-15 14:16 UTCPublished CVE record published
2026-10-15 02:19 UTCUpdated Record last modified

linux linux kernel UPGRADE

Affected: >= 3.16.52 and < 3.17 · >= 4.4.40 and < 4.5 · >= 4.8.16 and < 4.9 · >= 4.9.1 and < 5.10.256 · >= 5.11 and < 5.15.207 · >= 5.16 and < 6.1.173 · >= 6.2 and < 6.6.139 · >= 6.7 and < 6.12.89

Fixed in: 3.17, 4.5, 4.9, 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.89, 6.18.31, 7.0.8

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

debian debian linux MITIGATE

Affected: 11.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · proftpd · FIXED · 1.3.9e-1.fc46 · FEDORA-2026-fc0d87d66e · source

sudo dnf upgrade --advisory=FEDORA-2026-fc0d87d66e

Ubuntu 22.04 · linux · FIXED · 5.15.0-181.191

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.15.0-181.191" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 20.04 · linux · NOT AFFECTED

Ubuntu 24.04 · linux · FIXED · 6.8.0-124.124

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.8.0-124.124" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 25.10 · linux · FIXED · 6.17.0-35.35

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.17.0-35.35" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 20.04 · linux-hwe-5.15 · FIXED · 5.15.0-181.191~20.04.1

sudo apt update && sudo apt install --only-upgrade linux-hwe-5.15 dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux-hwe-5.15)" ge "5.15.0-181.191~20.04.1" && echo PATCHED || echo STILL-VULNERABLE

Debian 12 · linux · FIXED · 6.1.172-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.1.172-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · linux · FIXED · 6.12.88-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.12.88-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 10 · kernel · FIXED · kernel-6.12.0-211.16.1.el10_2

sudo dnf upgrade --advisory=RHSA-2026:19569 rpm -q kernel

RHEL 10.0 Extended Update Support · kernel · FIXED · kernel-6.12.0-55.75.1.el10_0

sudo dnf upgrade --advisory=RHSA-2026:20299 rpm -q kernel

RHEL 8 · kernel-rt · FIXED · kernel-rt-4.18.0-553.125.1.rt7.466.el8_10

sudo dnf upgrade --advisory=RHSA-2026:19664 rpm -q kernel-rt

RHEL 8 · kernel · FIXED · kernel-4.18.0-553.125.1.el8_10

sudo dnf upgrade --advisory=RHSA-2026:19666 rpm -q kernel

RHEL 8.4 Advanced Mission Critical Update Support · kernel · FIXED · kernel-4.18.0-305.192.1.el8_4

sudo dnf upgrade --advisory=RHSA-2026:20130 rpm -q kernel

Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2026-1754 · source

sudo dnf update --advisory=ALAS2023-2026-1754

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: 0xBlackash/CVE-2026-46333 (42 stars)
GitHub PoC: KaraZajac/CHARON (8 stars)
GitHub PoC: studiogangster/CVE-2026-46333 (6 stars)
Write-up: cert-portal.siemens.com/productcert/html/ssa-019113.html
Write-up: cert-portal.siemens.com/productcert/html/ssa-457936.html
Write-up: github.com/0xdeadbeefnetwork/ssh-keysign-pwn/

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-46333?

linux kernel: upgrade to 3.17, 4.5, 4.9, 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.89, 6.18.31, 7.0.8; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-46333 being exploited?

CVE-2026-46333 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-46333 affect?

CVE-2026-46333 affects linux kernel, debian linux. Severity is high (CVSS 7.1). In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core

How urgent is CVE-2026-46333?

Priority 58/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference; On your watchlist

Software pages

Linux kernel vulnerabilities · Debian vulnerabilities

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References

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