CVE-2021-32606
HIGH
7.8
CVSS Score
Published: May 11, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:53 AM UTC
2 products affected across 2 vendorsLinux KernelFedora
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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
Description
In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
5.11 ≤ v < 5.12.9
Affected range stops below 5.12.9, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://www.openwall.com/lists/oss-security/2021/05/28/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/
References (10)
Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/05/12/1Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/05/13/2Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/05/14/1Mailing ListPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/05/28/1Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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