Bug 2521498 (CVE-2026-74705)
| Summary: | CVE-2026-74705 kernel: udp: fix potential use-after-free in tunnel segmentation | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sferguso, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in the Linux kernel's UDP (User Datagram Protocol) tunnel segmentation. This vulnerability arises when the system attempts to process network packets, specifically in the __skb_udp_tunnel_segment() function. An attacker could potentially exploit a use-after-free condition, where the system attempts to use memory that has already been released, leading to system instability or potentially arbitrary code execution.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-08-22 15:48:29 UTC
Upstream advisory: https://lore.kernel.org/linux-cve-announce/2026082236-CVE-2026-74705-49e4@gregkh/T This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:77634 https://access.redhat.com/errata/RHSA-2026:77634 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:77690 https://access.redhat.com/errata/RHSA-2026:77690 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2026:79778 https://access.redhat.com/errata/RHSA-2026:79778 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Via RHSA-2026:79783 https://access.redhat.com/errata/RHSA-2026:79783 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:79782 https://access.redhat.com/errata/RHSA-2026:79782 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:79784 https://access.redhat.com/errata/RHSA-2026:79784 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Via RHSA-2026:79786 https://access.redhat.com/errata/RHSA-2026:79786 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:80908 https://access.redhat.com/errata/RHSA-2026:80908 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:81371 https://access.redhat.com/errata/RHSA-2026:81371 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:81349 https://access.redhat.com/errata/RHSA-2026:81349 |