CVE-2019-19318: n/a vulnerability

CVE-2019-19318: In the Linux kernel 5.3.11, mounting a crafted btrfs image twice can cause an rwsem_down_write_slowpath use...

In the Linux kernel 5.3.11, mounting a crafted btrfs image twice can cause an rwsem_down_write_slowpath use-after-free because (in rwsem_can_spin_on_owner in kernel/locking/rwsem.c) rwsem_owner_flags returns an already freed pointer,

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 02:16 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2019-19318 is a Linux kernel btrfs issue where mounting a specially crafted filesystem image twice can trigger a use-after-free. The source bundle does not provide CVSS, CWE, or confirmed business impact. Treat it as relevant mainly to Linux systems that allow btrfs image mounting, especially from untrusted media or users. Exposure is most plausible on Linux systems running affected kernels with btrfs available and workflows that mount disk images, removable media, or user-supplied filesystem images. General server exposure is lower unless untrusted users can influence mounts or administrators process untrusted btrfs images. Prioritize as a kernel hygiene issue for Linux fleets, with higher urgency where untrusted filesystem images are handled. Without KEV listing, CVSS, or confirmed exploitation in the bundle, this should not outrank actively exploited kernel vulnerabilities. Mitigation focus: Apply vendor kernel security updates for affected Linux distributions and appliances.; Check NetApp, Ubuntu, openSUSE, and Debian guidance for fixed package details.; Restrict mounting of untrusted btrfs images to isolated analysis environments..

Prepared: Jun 6, 2026, 12:31 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 27, 2019, 23:41 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19318CVE reference · x_refsource_MISC
https://security.netapp.com/advisory/ntap-20200103-0001/CVE reference · x_refsource_CONFIRM
USN-4414-1CVE reference · vendor-advisory, x_refsource_UBUNTU
[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security updateCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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