Bug 2520305

Summary: CVE-2026-73515 postgresql18-postgis: PostGIS: Memory Disclosure and Denial of Service via Malformed FlatGeobuf Buffer [fedora-all]
Product: [Fedora] Fedora Reporter: Laura Pardo <lpardo>
Component: postgresql18-postgisAssignee: Sandro Mani <manisandro>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: manisandro
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["bb2da580-b9c0-44d1-aa08-111d982c4f2d"]}
Fixed In Version: postgresql18-postgis-3.6.4-5.fc44 postgresql18-postgis-3.6.4-5.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-09-27 00:56:52 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2515434    

Description Laura Pardo 2026-08-20 13:23:48 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

PostGIS before 3.7.0beta2 contains an out-of-bounds read vulnerability that allows attackers to cause memory disclosure or a server crash by supplying a malformed FlatGeobuf buffer. The FlatGeobuf property metadata decoder verifies that a string length field is present but fails to verify that the subsequent string body is contained within the supplied buffer before materializing it into a SQL-visible value, enabling memory disclosure or denial of service.

Comment 1 Fedora Update System 2026-09-18 10:56:11 UTC
FEDORA-2026-0fe48ab374 (postgresql16-postgis-3.6.4-5.fc44, postgresql17-postgis-3.6.4-5.fc44, and 1 more) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-0fe48ab374

Comment 2 Fedora Update System 2026-09-18 10:56:12 UTC
FEDORA-2026-bb0d483289 (postgresql16-postgis-3.6.4-5.fc43, postgresql17-postgis-3.6.4-5.fc43, and 1 more) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-bb0d483289

Comment 3 Fedora Update System 2026-09-18 10:56:13 UTC
FEDORA-2026-490b1ed8ae (postgresql16-postgis-3.6.4-5.fc45, postgresql17-postgis-3.6.4-5.fc45, and 1 more) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-490b1ed8ae

Comment 4 Fedora Update System 2026-09-19 01:39:45 UTC
FEDORA-2026-490b1ed8ae has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-490b1ed8ae`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-490b1ed8ae

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-09-19 02:18:45 UTC
FEDORA-2026-0fe48ab374 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-0fe48ab374`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-0fe48ab374

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-09-19 02:22:41 UTC
FEDORA-2026-bb0d483289 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-bb0d483289`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-bb0d483289

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-09-26 01:46:52 UTC
FEDORA-2026-91259c13b9 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-91259c13b9`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-91259c13b9

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-09-27 00:56:52 UTC
FEDORA-2026-0fe48ab374 (postgresql16-postgis-3.6.4-5.fc44, postgresql17-postgis-3.6.4-5.fc44, and 1 more) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-09-27 01:11:48 UTC
FEDORA-2026-bb0d483289 (postgresql16-postgis-3.6.4-5.fc43, postgresql17-postgis-3.6.4-5.fc43, and 1 more) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 10 Fedora Update System 2026-09-29 01:33:35 UTC
FEDORA-2026-91259c13b9 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-91259c13b9`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-91259c13b9

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 11 Fedora Update System 2026-09-30 01:52:12 UTC
FEDORA-2026-91259c13b9 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-91259c13b9`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-91259c13b9

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.