CVE-2019-8956
HIGH
7.8
CVSS Score
Published: April 1, 2019 at 06:39 PM UTC
Updated: June 17, 2026 at 02:42 AM UTC
2 products affected across 2 vendorsLinux KernelUbuntu Linux
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Severity
HIGH7.8
Exploit prediction
EPSS 1%
Description
In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the "sctp_sendmsg()" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%4.17 ≤ v < 4.19.214.19 ≤ v < 4.19.214.20 ≤ v < 4.20.8
Affected range stops below 4.19.21, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.20.8, 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
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8
- https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ba59fb0273076637f0add4311faa990a5eec27c0
- https://usn.ubuntu.com/3930-1/
- https://usn.ubuntu.com/3930-2/
References (7)
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ba59fb0273076637f0add4311faa990a5eec27c0x_refsource_MISCBroken Link
Source: [email protected]
https://secuniaresearch.flexerasoftware.com/secunia_research/2019-5/x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://support.f5.com/csp/article/K12671141Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3930-1/Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3930-2/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-416CWE-787
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