Linux Kernel RDMA core iwpm_get_nlmsg_request integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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9.5$5k-$25k0.00

Summaryinfo

A vulnerability classified as very critical was found in Linux Kernel. This affects the function iwpm_get_nlmsg_request of the component RDMA core. Such manipulation leads to integer overflow. This vulnerability is listed as CVE-2026-98252. The attack may be performed from remote. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Linux Kernel (version unknown). Affected by this issue is the function iwpm_get_nlmsg_request of the component RDMA core. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: fix refcount bug in iwpm_get_nlmsg_request() iwpm_get_nlmsg_request() initializes refcount _after_ list_add_tail() making it accessible to global list where another CPU can kref_get() on nlmsg_request causing a refcount "addition on 0" bug. Fix this by initializing kref _before_ list_add_tail() so refcount for nlmsg_request can be incremented/decremented normally. In addition, also initialize every field before list_add_tail().

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-98252 since 09/25/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/06/2026).

Applying the patch 52c13c63bb3662c108244e7447055e30bf40244e/8a91609032d47e77bcb37bc8f6e88d89340d2709/ce8a379598bd4058081416abea4279fd05a95374/2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8/88e429a4e9bac3d2138011c5ca06254331f2587f/e15eb536be4f646ce683d2867572b2200be877f7/117871cdb8927542abd7b65ce5995bf0265a8c05/33fb59da49c4c3f5c2ec9f9d4447a56857a02c02 is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
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: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 52c13c63bb3662c108244e7447055e30bf40244e/8a91609032d47e77bcb37bc8f6e88d89340d2709/ce8a379598bd4058081416abea4279fd05a95374/2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8/88e429a4e9bac3d2138011c5ca06254331f2587f/e15eb536be4f646ce683d2867572b2200be877f7/117871cdb8927542abd7b65ce5995bf0265a8c05/33fb59da49c4c3f5c2ec9f9d4447a56857a02c02

Timelineinfo

09/25/2026 CVE reserved
10/06/2026 +11 days Advisory disclosed
10/06/2026 +0 days VulDB entry created
10/06/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-98252 (🔒)
GCVE (CVE): GCVE-0-2026-98252
GCVE (VulDB): GCVE-100-414218

Entryinfo

Created: 10/06/2026 13:46
Changes: 10/06/2026 13:46 (57)
Complete: 🔍
Cache ID: 216::103

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