CVE-2019-6454
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
Timeline
ID reserved
By mitre
- 2 months later
· 2 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.0% · top 19% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
n/a
- affected n/a
References (18)
- FEDORA-2019-8434288a24 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20190218 CVE-2019-6454: systemd (PID1) crash with specially crafted D-Bus message (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 107081 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- USN-3891-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- RHSA-2019:0368 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c (opens in a new tab)x_refsource_MISCx_transferred
- SUSE-SA:2019:0255-1 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20190219 CVE-2019-6454: systemd (PID1) crash with specially crafted D-Bus message (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [SECURITY] [DLA 1684-1] 20190219 systemd security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4393-1 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://security.netapp.com/advisory/ntap-20190327-0004/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://kc.mcafee.com/corporate/index?page=content&id=SB10278 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2019:0990 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2019:1450 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2019:1322 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:1502 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:2805 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [oss-security] 20210720 CVE-2021-33910: Denial of service (stack exhaustion) in systemd (PID 1) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-6454)Record last updated .