CVE-2026-46333: Linux kernel · ptrace: slightly saner 'get_dumpable()' logic
Affects Linux kernelSource CVE Database V5
Public exploit available · CVSS 7.1 High · fixed in 4709234fd1b95136ceb789f639b1e7ea5de1b181 : patch Linux kernel as a priority.
Data as of 10 Nov 2026, 13:04 UTC
Sources agree
| CNA (Linux) | CVSS 3.1 | 7.1 |
|---|---|---|
| ADP (redhat-SADP) | CVSS 3.1 | 7.8 |
- CISA SSVC
- Exploitation
- Proof of concept is public or traded
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-05-21.
- Patch
- Available – fixed in 4709234fd1b95136ceb789f639b1e7ea5de1b181, 01363cb3fbd0238ffdeb09f53e9039c9edf8a730, 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6 +9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 15 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by kernel.org
, 46 hours before disclosure
CVE published
on cve.org
, t = 0
CISA SSVC assessment
proof of concept public
, 6 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
Patches fixing this vulnerability have been released in Linux kernel versions 4.5, 4.9, 4.10, and later. Users should apply these official fixes promptly. For Red Hat Enterprise Linux systems, follow the Red Hat security advisory RHSB-2026-004 for detailed remediation steps. In container environments, using default restricted security context constraints that disable privilege escalation can mitigate the risk. No additional action is required if these mitigations are in place.
Description
CVE-2026-46333 is a vulnerability in the Linux kernel's ptrace subsystem related to the 'get_dumpable()' logic. It allows a local unprivileged user to read sensitive root-owned files due to a race condition during process termination. This flaw can lead to disclosure of sensitive data such as SSH host private keys or /etc/shadow contents. The vulnerability affects multiple Linux kernel versions prior to the fixed releases. Red Hat has issued advisories and patches to address this issue.
References
- git.kernel.org/stable/c/93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6 (opens in a new tab)
- git.kernel.org/stable/c/15b828a46f305ae9f05a7c16914b3ce273474205 (opens in a new tab)
- git.kernel.org/stable/c/4709234fd1b95136ceb789f639b1e7ea5de1b181 (opens in a new tab)
- git.kernel.org/stable/c/8f907d345bae8f4b3f004c5abc56bf2dfb851ea7 (opens in a new tab)
- git.kernel.org/stable/c/6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d (opens in a new tab)
- git.kernel.org/stable/c/2a93a4fac7b6051d3be7cd1b015fe7320cd0404d (opens in a new tab)
- git.kernel.org/stable/c/01363cb3fbd0238ffdeb09f53e9039c9edf8a730 (opens in a new tab)
- git.kernel.org/stable/c/31e62c2ebbfdc3fe3dbdf5e02c92a9dc67087a3a (opens in a new tab)
- openwall.com/lists/oss-security/2026/05/15/9 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2026/05/msg00032.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2026/05/msg00035.html (opens in a new tab)
- openwall.com/lists/oss-security/2026/05/20/14 (opens in a new tab)
- openwall.com/lists/oss-security/2026/05/20/16 (opens in a new tab)
- github.com/0xdeadbeefnetwork/ssh-keysign-pwn/ (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-46333 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2477802 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46333.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19540 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:33486 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21701 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21702 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20299 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19569 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19705 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20593 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20054 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20129 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19568 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19666 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:23470 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20130 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20051 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19521 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:23471 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:23469 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:24814 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:23468 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19664 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19711 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19875 (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)