CVE-2026-46333

Advisory lineage Upstream: 0 Downstream: 45
Awaiting Analysis
Published: 15 May 2026, 12:58
Last modified:14 Jun 2026, 18:09

Vulnerability Summary

Overall Risk (default)
medium
38/100
CVSS Score
7.1 HIGH
v3.1 (cve.org)
EPSS Score
0.3% LOW
0% probability +0.30%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

15 May 2026, 12:58
Published
Vulnerability first disclosed
14 Jun 2026, 18:09
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Trends

Current EPSS score: 0.30%• Percentile: 22%

Techniques & Countermeasures

  • CWE-269•Improper Privilege Management

    The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected Systems

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 15b828a46f305ae9f05a7c16914b3ce273474205 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4709234fd1b95136ceb789f639b1e7ea5de1b181 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8f907d345bae8f4b3f004c5abc56bf2dfb851ea7 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2a93a4fac7b6051d3be7cd1b015fe7320cd0404d | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 01363cb3fbd0238ffdeb09f53e9039c9edf8a730 | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6 | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 15b828a46f305ae9f05a7c16914b3ce273474205 | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 4709234fd1b95136ceb789f639b1e7ea5de1b181 | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 8f907d345bae8f4b3f004c5abc56bf2dfb851ea7 | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 2a93a4fac7b6051d3be7cd1b015fe7320cd0404d | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 01363cb3fbd0238ffdeb09f53e9039c9edf8a730 | ≥ bfedb589252c01fa505ac9f6f2a3d5d68d707ef4, < 31e62c2ebbfdc3fe3dbdf5e02c92a9dc67087a3a | d5b3e840dbf6dd2c0f30b5982b6f5ecd49e46b12 | 03eed7afbc09e061f66b448daf7863174c3dc3f3 | e45692fa1aea06676449b63ef3c2b6e1e72b7578 | 694a95fa6dae4991f16cda333d897ea063021fed | ≥ 3.16.52, < 3.17 | ≥ 4.4.40, < 4.5 | ≥ 4.8.16, < 4.9 | ≥ 4.9.1, < 4.10 | 4.10

References (14)