--- id: CVE-2026-46333 title: |- 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 c… summary: |- 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 c… severity: high cvss: 7.1 cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N' cwe: - CWE-269 vendor: linux product: linux_kernel affected: - 'linux_kernel >= 3.16.52, < 3.17' - 'linux_kernel >= 4.4.40, < 4.5' - 'linux_kernel >= 4.8.16, < 4.9' - 'linux_kernel >= 4.9.1, < 5.10.256' - 'linux_kernel >= 5.11, < 5.15.207' - 'linux_kernel >= 5.16, < 6.1.173' - 'linux_kernel >= 6.2, < 6.6.139' - 'linux_kernel >= 6.7, < 6.12.89' - 'linux_kernel >= 6.13, < 6.18.31' - 'linux_kernel >= 6.19, < 7.0.8' - linux_kernel = 7.1 - debian_linux = 11.0 patched: - linux_kernel 7.0.8 published: '2026-05-15' updated: '2026-06-30' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46333' references: - url: 'https://git.kernel.org/stable/c/01363cb3fbd0238ffdeb09f53e9039c9edf8a730' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/15b828a46f305ae9f05a7c16914b3ce273474205' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/2a93a4fac7b6051d3be7cd1b015fe7320cd0404d' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/31e62c2ebbfdc3fe3dbdf5e02c92a9dc67087a3a' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/4709234fd1b95136ceb789f639b1e7ea5de1b181' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/8f907d345bae8f4b3f004c5abc56bf2dfb851ea7' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'http://www.openwall.com/lists/oss-security/2026/05/15/9' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.openwall.com/lists/oss-security/2026/05/20/14' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.openwall.com/lists/oss-security/2026/05/20/16' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2026/05/msg00032.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2026/05/msg00035.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2026:19521' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19540' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19568' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19569' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19664' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19666' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19705' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19711' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:19875' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:20051' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:20054' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:20129' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:20130' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:20299' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:20593' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:21701' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:21702' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:23468' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:23469' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:23470' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:23471' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/errata/RHSA-2026:24814' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://access.redhat.com/security/cve/CVE-2026-46333' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2477802' label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c - url: 'https://github.com/0xdeadbeefnetwork/ssh-keysign-pwn/' label: 134c704f-9b21-4f2e-91b3-4a467353bcc0 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46333.json label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c tags: - nvd - cve.org - exploit-available epss: 0.00505 epssPercentile: 0.40595 ingestedAt: '2026-07-01T09:50:45.815Z' exploitAvailable: true ssvc: exploitation: poc automatable: 'no' technicalImpact: total timestamp: '2026-05-21T00:00:00+00:00' exploits: github: 4 githubRepos: - 'https://github.com/0xBlackash/CVE-2026-46333' - 'https://github.com/KaraZajac/CHARON' - 'https://github.com/studiogangster/CVE-2026-46333' metasploit: - post/linux/gather/cve_2026_46333_chage checkedAt: '2026-09-26T09:05:44.898Z' --- ## Overview 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. ## Affected - `linux_kernel >= 3.16.52, < 3.17` - `linux_kernel >= 4.4.40, < 4.5` - `linux_kernel >= 4.8.16, < 4.9` - `linux_kernel >= 4.9.1, < 5.10.256` - `linux_kernel >= 5.11, < 5.15.207` - `linux_kernel >= 5.16, < 6.1.173` - `linux_kernel >= 6.2, < 6.6.139` - `linux_kernel >= 6.7, < 6.12.89` - `linux_kernel >= 6.13, < 6.18.31` - `linux_kernel >= 6.19, < 7.0.8` - `linux_kernel = 7.1` - `debian_linux = 11.0` ## Remediation Upgrade past the affected range: - `linux_kernel 7.0.8`