Linux Kernel up to 7.1.7 ipvs ip_vs_bind_dest flags use after free

CVSS Meta Temp Score
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CTI Interest Score
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9.5$5k-$25k0.65+

Summaryinfo

A vulnerability labeled as very critical has been found in Linux Kernel up to 7.1.7. The affected element is the function ip_vs_bind_dest of the component ipvs. Such manipulation of the argument flags leads to use after free. This vulnerability is traded as CVE-2026-80714. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.1.7 and classified as very critical. Affected by this issue is the function ip_vs_bind_dest of the component ipvs. The manipulation of the argument flags with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ipvs: do not propagate one-packet flag to synced conns Synced connections can be created before their destination exists. When the destination is later added, ip_vs_bind_dest() copies connection flags from the destination into cp->flags. IP_VS_CONN_F_ONE_PACKET connections are not synced. If a synced connection inherits IP_VS_CONN_F_ONE_PACKET while it is already hashed, expiry can treat it as a one-packet connection and skip unlinking the existing conn_tab node, leaving stale hash nodes pointing at a freed struct ip_vs_conn. Drop IP_VS_CONN_F_ONE_PACKET from destination flags when binding synced connections.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-80714 since 08/26/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/28/2026).

Upgrading to version 5.10.265, 5.15.216, 6.1.183, 6.6.151, 6.12.103, 6.18.44 or 7.1.8 eliminates this vulnerability. Applying the patch 06d1d9b56ef8132fbf85006885eb43d9510b8b02/acbdc276091b308ca7794acb86e761f8203e2f59/300348e3ba1521b003d59825f97e24f9a6859688/44af98cc7d5ef8e730488d5df1eecd5deeaa5947/4649e6faeecdc2d44bfa6ccbe405eef27e55d816/b5ee5b266f833601ac4817f6df0bc496fc376a28/e7acfc990c29890c883d0d0ce3f737d003a43b44/a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.265/5.15.216/6.1.183/6.6.151/6.12.103/6.18.44/7.1.8
Patch: 06d1d9b56ef8132fbf85006885eb43d9510b8b02/acbdc276091b308ca7794acb86e761f8203e2f59/300348e3ba1521b003d59825f97e24f9a6859688/44af98cc7d5ef8e730488d5df1eecd5deeaa5947/4649e6faeecdc2d44bfa6ccbe405eef27e55d816/b5ee5b266f833601ac4817f6df0bc496fc376a28/e7acfc990c29890c883d0d0ce3f737d003a43b44/a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b

Timelineinfo

08/26/2026 CVE reserved
08/28/2026 +2 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
08/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80714 (🔒)
GCVE (CVE): GCVE-0-2026-80714
GCVE (VulDB): GCVE-100-396644

Entryinfo

Created: 08/28/2026 11:02
Changes: 08/28/2026 11:02 (60)
Complete: 🔍
Cache ID: 216::103

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