gsd-2021-33200
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
Aliases
Aliases
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"GSD": {
"alias": "CVE-2021-33200",
"description": "kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux-\u003ealu_limit.",
"id": "GSD-2021-33200",
"references": [
"https://www.suse.com/security/cve/CVE-2021-33200.html",
"https://access.redhat.com/errata/RHSA-2021:4356",
"https://access.redhat.com/errata/RHSA-2021:4140",
"https://ubuntu.com/security/CVE-2021-33200",
"https://advisories.mageia.org/CVE-2021-33200.html",
"https://security.archlinux.org/CVE-2021-33200",
"https://alas.aws.amazon.com/cve/html/CVE-2021-33200.html",
"https://linux.oracle.com/cve/CVE-2021-33200.html"
]
},
"gsd": {
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"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
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"id": "GSD-2021-33200",
"modified": "2023-12-13T01:23:18.636061Z",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.