Linux Kernel up to 7.2.5 srpt srpt_alloc_rw_ctxs allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.35+

Summaryinfo

A vulnerability labeled as very critical has been found in Linux Kernel up to 7.2.5. The affected element is the function srpt_alloc_rw_ctxs of the component srpt. The manipulation results in allocation of resources. This vulnerability is identified as CVE-2026-100075. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 7.2.5. Affected is the function srpt_alloc_rw_ctxs of the component srpt. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect descriptor, the unwind path destroys RDMA contexts but leaves stale n_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later sq_wr_avail accounting in srpt_queue_response() or srpt_write_pending() can then subtract the wrong number of send queue credits. Reset the counters and clear rw_ctxs after freeing the heap allocation before returning an error.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-100075 since 09/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/25/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch af00051dbc9f467d4840ec709680660a3f8990fa/717ab4d0614e9446bf8e2de6229464499e4008d6/f1f2252da52cdda912da9993f39f58783b01b38f/f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d/be1478849e1abb1e12dc12e14cdbf800cc6fa99a/af073bd245180393bcb15d33d3990a6bdc32593a/bd02d644bd19a2795c018635d273d91e45d2bb95/b38f98e176050850f41bb6415f3a71400056623e is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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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: 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: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: af00051dbc9f467d4840ec709680660a3f8990fa/717ab4d0614e9446bf8e2de6229464499e4008d6/f1f2252da52cdda912da9993f39f58783b01b38f/f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d/be1478849e1abb1e12dc12e14cdbf800cc6fa99a/af073bd245180393bcb15d33d3990a6bdc32593a/bd02d644bd19a2795c018635d273d91e45d2bb95/b38f98e176050850f41bb6415f3a71400056623e

Timelineinfo

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

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-100075 (🔒)
GCVE (CVE): GCVE-0-2026-100075
GCVE (VulDB): GCVE-100-410196

Entryinfo

Created: 09/25/2026 15:34
Changes: 09/25/2026 15:34 (59)
Complete: 🔍
Cache ID: 216::103

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