Red Hat Security Advisory: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service (CVE-2025-38109) * kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure (CVE-2026-23144) * kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution (CVE-2026-23171) * kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193) * kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209) * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204) * kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This advisory covers several vulnerabilities in the Linux kernel as packaged by Red Hat for Red Hat Enterprise Linux 10 and associated variants. The issues include use-after-free bugs (CVE-2025-38109, CVE-2026-23171, CVE-2026-23193), denial of service and memory leak (CVE-2026-23144), error recovery fix (CVE-2026-23209), safer pointer usage (CVE-2026-23204), and race condition fix (CVE-2026-23191). These vulnerabilities affect core kernel components related to networking, storage, and audio subsystems. The advisory provides updated kernel packages to remediate these vulnerabilities and requires a reboot for the fixes to take effect.
Potential Impact
The vulnerabilities can lead to denial of service, system crashes, memory leaks, and potentially arbitrary code execution due to use-after-free conditions in kernel modules. The overall security impact is rated moderate by Red Hat. No known exploits in the wild have been reported at the time of the advisory.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 10 and related products should apply the kernel update as provided in advisory RHSA-2026:6632. A system reboot is required to activate the fixes. Patch status is official-fix as per the vendor advisory.
Red Hat Security Advisory: kernel security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service (CVE-2025-38109) * kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure (CVE-2026-23144) * kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution (CVE-2026-23171) * kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193) * kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209) * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204) * kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers several vulnerabilities in the Linux kernel as packaged by Red Hat for Red Hat Enterprise Linux 10 and associated variants. The issues include use-after-free bugs (CVE-2025-38109, CVE-2026-23171, CVE-2026-23193), denial of service and memory leak (CVE-2026-23144), error recovery fix (CVE-2026-23209), safer pointer usage (CVE-2026-23204), and race condition fix (CVE-2026-23191). These vulnerabilities affect core kernel components related to networking, storage, and audio subsystems. The advisory provides updated kernel packages to remediate these vulnerabilities and requires a reboot for the fixes to take effect.
Potential Impact
The vulnerabilities can lead to denial of service, system crashes, memory leaks, and potentially arbitrary code execution due to use-after-free conditions in kernel modules. The overall security impact is rated moderate by Red Hat. No known exploits in the wild have been reported at the time of the advisory.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 10 and related products should apply the kernel update as provided in advisory RHSA-2026:6632. A system reboot is required to activate the fixes. Patch status is official-fix as per the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6632
- Cve Count
- 7
- Additional Cves
- ["CVE-2026-23144","CVE-2026-23171","CVE-2026-23191","CVE-2026-23193","CVE-2026-23204","CVE-2026-23209"]
- Cvss Version
- null
Threat ID: 6a27e9fd8dd33fbd8517cfc9
Added to database: 06/09/2026, 10:25:01 UTC
Last enriched: 07/12/2026, 10:05:34 UTC
Last updated: 07/31/2026, 19:24:49 UTC
Views: 155
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