Linux Kernel up to 7.2.4 qla2xxx qla24xx_report_id_acquisition use after free

CVSS Meta Temp Score
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CTI Interest Score
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9.5$5k-$25k0.44

Summaryinfo

A vulnerability has been found in Linux Kernel up to 7.2.4 and classified as very critical. Affected by this issue is the function qla24xx_report_id_acquisition of the component qla2xxx. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2026-89861. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been classified as very critical. This affects the function qla24xx_report_id_acquisition of the component qla2xxx. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition() In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free. Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-89861 since 09/11/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/16/2026).

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5 or 7.3-rc1 eliminates this vulnerability. Applying the patch d09ef32af1e05d79f29b460521a20bc4e6fd2ecf/4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69/267533b28ddf2c9223d30ad7e6960fa9e936428e/f8d2eb510c063a8ca79a5dc766a4303d3925fe83/f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297/47272152a13d202d98496208f9bf382c1cf4d4fb/d556f899964d184e6cb788f3fa9dcddcafe1ab2d/793cedee296fd819bfadc2a7ec4d52faf9c09a0a is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.51/7.2.5/7.3-rc1
Patch: d09ef32af1e05d79f29b460521a20bc4e6fd2ecf/4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69/267533b28ddf2c9223d30ad7e6960fa9e936428e/f8d2eb510c063a8ca79a5dc766a4303d3925fe83/f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297/47272152a13d202d98496208f9bf382c1cf4d4fb/d556f899964d184e6cb788f3fa9dcddcafe1ab2d/793cedee296fd819bfadc2a7ec4d52faf9c09a0a

Timelineinfo

09/11/2026 CVE reserved
09/16/2026 +5 days Advisory disclosed
09/16/2026 +0 days VulDB entry created
09/16/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-89861 (🔒)
GCVE (CVE): GCVE-0-2026-89861
GCVE (VulDB): GCVE-100-405681

Entryinfo

Created: 09/16/2026 13:43
Changes: 09/16/2026 13:43 (59)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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