Linux Kernel up to 7.2.4 qla2xxx qla2x00_update_fru_versions Count stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 7.2.4. This impacts the function qla2x00_update_fru_versions of the component qla2xxx. The manipulation of the argument Count results in stack-based overflow. This vulnerability was named CVE-2026-89858. The attack needs to be approached locally. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 7.2.4. Affected is the function qla2x00_update_fru_versions of the component qla2xxx. The manipulation of the argument count with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound image count in qla2x00_update_fru_versions() qla2x00_update_fru_versions() copies the user-supplied BSG request into a fixed 256-byte stack buffer (bsg[DMA_POOL_SIZE]) and then iterates list->count times over the qla_image_version array embedded in that buffer, advancing the image pointer each iteration. count is taken directly from user input with no upper bound, while only (DMA_POOL_SIZE - sizeof(list->count)) / sizeof(struct qla_image_version) = 6 entries actually fit. A larger count walks the image pointer off the end of the stack buffer, reading adjacent kernel stack memory and sending it to the device via qla2x00_write_sfp(). Reject requests whose declared count does not fit in the buffer.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-89858 since 09/11/2026. The exploitability is told to be easy. Local access is required to approach this attack. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k 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 af733bbfcf667af1871a2735fba2835b0da71efb/a9706d5e754e77515a92bb532bd0d73644979a1f/7e3154c97ec15460f715dbbe4097c255cce110b1/047f1f7ee6f85bde28abfdda9fa550191ddc0532/f93e8039e6fd54a3c027c6184daf00b745b576a0/7b22b4cb8822805cef7ba618da6f76e1474d68bd/f2d4f025b67fcbfb2bbbadd3b5a6a43c4b436514/de62cf265dbe309f34f144a6cdbca9240317727e 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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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
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: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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: af733bbfcf667af1871a2735fba2835b0da71efb/a9706d5e754e77515a92bb532bd0d73644979a1f/7e3154c97ec15460f715dbbe4097c255cce110b1/047f1f7ee6f85bde28abfdda9fa550191ddc0532/f93e8039e6fd54a3c027c6184daf00b745b576a0/7b22b4cb8822805cef7ba618da6f76e1474d68bd/f2d4f025b67fcbfb2bbbadd3b5a6a43c4b436514/de62cf265dbe309f34f144a6cdbca9240317727e

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-2026-89858 (🔒)
GCVE (CVE): GCVE-0-2026-89858
GCVE (VulDB): GCVE-100-405678

Entryinfo

Created: 09/16/2026 13:42
Changes: 09/16/2026 13:42 (60)
Complete: 🔍
Cache ID: 216::103

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