CVE-2019-19767
MEDIUM
5.5
CVSS Score
Published: December 12, 2019 at 07:39 PM UTC
Updated: June 17, 2026 at 02:27 AM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
MEDIUM5.5
Exploit prediction
EPSS 2%
Description
The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 5.4.2
Affected range stops below 5.4.2, 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://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
- https://bugzilla.kernel.org/show_bug.cgi?id=205609
- https://bugzilla.kernel.org/show_bug.cgi?id=205707
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a
References (13)
Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlx_refsource_MISCExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.kernel.org/show_bug.cgi?id=205609x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.kernel.org/show_bug.cgi?id=205707x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55ax_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55aMailing Listx_refsource_MLIST
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlMailing Listx_refsource_MLIST
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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