Security update for the Linux Kernel (Live Patch 30 for SUSE Linux Enterprise 15 SP5)
This security update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.121 addresses multiple vulnerabilities including heap overflow, use-after-free, and improper handling of oversized directory entries. The update fixes five distinct security issues affecting kernel components such as NFSv4.0, network packet handling, FUSE filesystem, and generic receive offload (GRO). These vulnerabilities are rated high severity and have been resolved by the SUSE Product Security Team in this patch.
AI Analysis
Technical Summary
The SUSE Linux Enterprise Kernel 5.14.21-150500.55.121 update fixes five security vulnerabilities: CVE-2026-31402 addresses a heap overflow in the NFSv4.0 LOCK replay cache; CVE-2026-31504 fixes a use-after-free in packet_release() caused by a race condition; CVE-2026-31694 prevents acceptance of oversized directory entries in the FUSE page cache; CVE-2026-43503 includes final fixes related to dirty.frag handling; and CVE-2026-46323 corrects an issue in the network GRO code to avoid merging zero-copy skbs. These fixes mitigate risks of memory corruption and potential kernel instability or privilege escalation.
Potential Impact
The vulnerabilities fixed by this update could lead to memory corruption issues such as heap overflow and use-after-free, which may be exploited to cause denial of service or potentially escalate privileges on affected systems. Improper handling of oversized directory entries and network packet processing could also lead to kernel crashes or data corruption. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official security update is available from the SUSE Product Security Team for SUSE Linux Enterprise Kernel 5.14.21-150500.55.121. Applying this update will remediate the identified vulnerabilities. Users should promptly apply the provided patch to ensure their systems are protected.
Security update for the Linux Kernel (Live Patch 30 for SUSE Linux Enterprise 15 SP5)
Description
This security update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.121 addresses multiple vulnerabilities including heap overflow, use-after-free, and improper handling of oversized directory entries. The update fixes five distinct security issues affecting kernel components such as NFSv4.0, network packet handling, FUSE filesystem, and generic receive offload (GRO). These vulnerabilities are rated high severity and have been resolved by the SUSE Product Security Team in this patch.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The SUSE Linux Enterprise Kernel 5.14.21-150500.55.121 update fixes five security vulnerabilities: CVE-2026-31402 addresses a heap overflow in the NFSv4.0 LOCK replay cache; CVE-2026-31504 fixes a use-after-free in packet_release() caused by a race condition; CVE-2026-31694 prevents acceptance of oversized directory entries in the FUSE page cache; CVE-2026-43503 includes final fixes related to dirty.frag handling; and CVE-2026-46323 corrects an issue in the network GRO code to avoid merging zero-copy skbs. These fixes mitigate risks of memory corruption and potential kernel instability or privilege escalation.
Potential Impact
The vulnerabilities fixed by this update could lead to memory corruption issues such as heap overflow and use-after-free, which may be exploited to cause denial of service or potentially escalate privileges on affected systems. Improper handling of oversized directory entries and network packet processing could also lead to kernel crashes or data corruption. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official security update is available from the SUSE Product Security Team for SUSE Linux Enterprise Kernel 5.14.21-150500.55.121. Applying this update will remediate the identified vulnerabilities. Users should promptly apply the provided patch to ensure their systems are protected.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- SUSE Product Security Team
- Advisory Id
- SUSE-SU-2026:2571-1
- Cve Count
- 5
- Additional Cves
- ["CVE-2026-31504","CVE-2026-31694","CVE-2026-43503","CVE-2026-46323"]
- Cvss Version
- null
Threat ID: 6a3c0d22eed863c81e23e8eb
Added to database: 06/24/2026, 17:00:18 UTC
Last enriched: 06/24/2026, 17:17:05 UTC
Last updated: 06/24/2026, 19:03:31 UTC
Views: 4
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