CVE-2019-19816
HIGH
7.8
CVSS Score
Published: December 17, 2019 at 05:58 AM UTC
Updated: June 17, 2026 at 02:27 AM UTC
18 products affected across 4 vendorsLinux KernelDebian LinuxUbuntu Linux
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Severity
HIGH7.8
Exploit prediction
EPSS 3%
Description
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%Debian Linux· Debiandrupal
95%2.6.12 ≤ v < 4.4.2474.10 ≤ v < 4.14.2104.15 ≤ v < 4.19.1374.20 ≤ v < 5.24.5 ≤ v < 4.9.247
Affected range stops below 4.14.210, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.137, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.247, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.247, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.2, so it looks safe — our inference, not a vendor statement
v ≥ 9.5
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (6)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20200103-0001/Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4414-1/CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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