CVE-2026-46333ptrace: slightly saner 'get_dumpable()' logic
Updated under an hour ago ()
Does this affect you?
It affects Linux and 14 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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_access() uses 'dumpable' to check various other things entirely independently of the MM (typically explicitly using flags like PTRACE_MODE_READ_FSCREDS). Including for threads that no longer have a VM (and maybe never did, like most kernel threads). It's not what this flag was designed for, but it is what it is. The ptrace code does check that the uid/gid matches, so you do have to be uid-0 to see kernel thread details, but this means that the traditional "drop capabilities" model doesn't make any difference for this all. Make it all make a *bit* more sense by saying that if you don't have a MM pointer, we'll use a cached "last dumpability" flag if the thread ever had a MM (it will be zero for kernel threads since it is never set), and require a proper CAP_SYS_PTRACE capability to override.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-269
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 15b828a46f305ae9f05a7c16914b3ce273474205; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 4709234fd1b95136ceb789f639b1e7ea5de1b181; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 8f907d345bae8f4b3f004c5abc56bf2dfb851ea7; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 2a93a4fac7b6051d3be7cd1b015fe7320cd0404d; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 01363cb3fbd0238ffdeb09f53e9039c9edf8a730; from bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 before 31e62c2ebbfdc3fe3dbdf5e02c92a9dc67087a3a; and 8 more ranges | CNA record |
Red Hat NVIDIA for RHEL 10 redhat:enterprise_linux_nvidia | from 0:6.12.0-211.8.el10nv not affected; from 0:6.12.0-231.12.el10nv not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:6.12.0-211.16.1.el10_2 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:6.12.0-55.75.1.el10_0 not affected | CISA ADP |
from 0:4.18.0-305.192.1.el8_4 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On redhat:rhel_eus_long_life | from 0:4.18.0-305.192.1.el8_4 not affected | CISA ADP |
from 0:4.18.0-372.193.1.el8_6 not affected | CISA ADP | |
from 0:4.18.0-372.193.1.el8_6 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:5.14.0-427.126.1.el9_4 not affected | CISA ADP |
Red Hat Red Hat OpenShift Container Platform 4.20 redhat:openshift | from 0:1.33.12-3.rhaos4.20.git64c6a00.el9 not affected | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 3.16.52 before 3.17; from 4.4.40 before 4.5; from 4.8.16 before 4.9; from 4.9.1 before 5.10.256; from 5.11 before 5.15.207; from 5.16 before 6.1.173; from 6.2 before 6.6.139; from 6.7 before 6.12.89; and 5 more ranges | NVD |
debian debian_linux debian:debian_linux | 11.0 | NVD |
References
- https://git.kernel.org/stable/c/93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6patch
- https://git.kernel.org/stable/c/15b828a46f305ae9f05a7c16914b3ce273474205patch
- https://git.kernel.org/stable/c/4709234fd1b95136ceb789f639b1e7ea5de1b181patch
- https://git.kernel.org/stable/c/8f907d345bae8f4b3f004c5abc56bf2dfb851ea7patch
- https://git.kernel.org/stable/c/6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3dpatch
- https://git.kernel.org/stable/c/2a93a4fac7b6051d3be7cd1b015fe7320cd0404dpatch
- https://git.kernel.org/stable/c/01363cb3fbd0238ffdeb09f53e9039c9edf8a730patch
- https://git.kernel.org/stable/c/31e62c2ebbfdc3fe3dbdf5e02c92a9dc67087a3apatch
- http://www.openwall.com/lists/oss-security/2026/05/15/9mailing-list
- http://www.openwall.com/lists/oss-security/2026/05/20/14mailing-list
- http://www.openwall.com/lists/oss-security/2026/05/20/16mailing-list
- https://lists.debian.org/debian-lts-announce/2026/05/msg00032.htmlthird-party-advisory
- https://lists.debian.org/debian-lts-announce/2026/05/msg00035.htmlthird-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19521third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19540third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19568third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19569third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19664third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19666third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19705third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19711third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:19875third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:20051third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:20054third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:20129third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.