In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In… (CVE-2025-68741)
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item(). The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc(). An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption. Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items.
AI Analysis
Technical Summary
Red Hat has released a security update for the Linux kernel in Red Hat Enterprise Linux 8 to fix two vulnerabilities: CVE-2025-68741, which addresses improper freeing of a purex item in the SCSI qla2xxx driver, and CVE-2026-23191, which resolves a race condition in the ALSA aloop PCM trigger. These vulnerabilities relate to memory management and concurrency issues in kernel subsystems. The update is classified as important and requires applying the provided kernel packages followed by a system reboot. The advisory references Red Hat's errata RHSA-2026:9131 for detailed patch information.
Potential Impact
The vulnerabilities affect the Linux kernel core components, potentially leading to memory corruption or race conditions that could impact system stability or security. The improper freeing of memory in the SCSI driver could cause kernel crashes or undefined behavior. The race condition in the ALSA aloop PCM trigger could lead to unpredictable audio subsystem behavior. Red Hat rates the security impact as important, indicating a significant but not critical risk.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users should apply the security update for Red Hat Enterprise Linux 8 as described in Red Hat advisory RHSA-2026:9131. After applying the update, a system reboot is required for the fixes to take effect. No additional mitigation steps are indicated by the vendor.
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In… (CVE-2025-68741)
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item(). The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc(). An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption. Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items.
CVSS v3.1
Score 9.8critical
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat has released a security update for the Linux kernel in Red Hat Enterprise Linux 8 to fix two vulnerabilities: CVE-2025-68741, which addresses improper freeing of a purex item in the SCSI qla2xxx driver, and CVE-2026-23191, which resolves a race condition in the ALSA aloop PCM trigger. These vulnerabilities relate to memory management and concurrency issues in kernel subsystems. The update is classified as important and requires applying the provided kernel packages followed by a system reboot. The advisory references Red Hat's errata RHSA-2026:9131 for detailed patch information.
Potential Impact
The vulnerabilities affect the Linux kernel core components, potentially leading to memory corruption or race conditions that could impact system stability or security. The improper freeing of memory in the SCSI driver could cause kernel crashes or undefined behavior. The race condition in the ALSA aloop PCM trigger could lead to unpredictable audio subsystem behavior. Red Hat rates the security impact as important, indicating a significant but not critical risk.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users should apply the security update for Red Hat Enterprise Linux 8 as described in Red Hat advisory RHSA-2026:9131. After applying the update, a system reboot is required for the fixes to take effect. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:9131
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-23191"]
- Cvss Version
- 3.1
Threat ID: 6a175eede29bf47b50edbbaa
Added to database: 05/27/2026, 21:15:25 UTC
Last enriched: 07/12/2026, 10:05:22 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 78
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