CVE-2026-98948
UnknownSummary
In the Linux kernel mlxsw spectrum_flower driver, mlxsw_sp_flower_tmplt_create() could acquire port range registers while parsing a template that were never released, because the local rulei struct never went through mlxsw_sp_acl_rulei_destroy().
Risk Assessment
The port range register leak may lead to exhaustion of switch hardware resources and malfunction of ACL rules, potentially affecting network feature availability.
Recommendation
Update the Linux kernel to a version containing the fix that factors out resource release and calls it from mlxsw_sp_flower_tmplt_create().
Other vulnerabilities in Linux kernel
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In kvm_vfio_pviommu_attach of vfio.c, there is a possible double free due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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- CVE-2026-99242Unknown
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- CVE-2026-99241Unknown
In the Linux kernel, a missing lock in ntfs_filemap_page_mkwrite() was fixed; it called iomap_page_mkwrite() without holding mapping->invalidate_lock. A concurrent truncate or fallocate could be invalidating pagecache and rewriting the runlist while the write fault mapped blocks and dirtied the folio.
- CVE-2026-99240Unknown
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_flower: Fix port range register leak in tmplt_create() mlxsw_sp_flower_tmplt_create() parses a flow_cls_offload template into a stack-local struct mlxsw_sp_acl_rule_info purely to compute rulei.values.elusage. Parsing can acquire port range registers via mlxsw_sp_flower_parse_ports_range(), but since this rulei never goes through mlxsw_sp_acl_rulei_destroy(), those registers were never released, including through chain template deletion. Factor out of mlxsw_sp_acl_rulei_destroy() the code to actually release the necessary resources and call from mlxsw_sp_flower_tmplt_create() to plug the leak. The issue was found during a review of Wentao Liang's patch referenced below.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS