CVE-2021-20265
MEDIUM
5.5
CVSS Score
Published: March 10, 2021 at 03:30 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
3 products affected across 3 vendorsLinux KernelTekelec Platform DistributionKernel
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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
Description
A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
7.4.0 ≤ v ≤ 7.7.1
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1908827x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4bx_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuoct2021.htmlCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-400CWE-401
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