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CVE-2026-90415

Unknown

Last modified

CVE-2026-90415 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: free STAG index when TPT entry write fails write_tpt_entry() allocates a new STAG index with c4iw_get_resource() and bumps stats.stag.cur before programming the entry. When write_adapter_mem() fails, it returns the error without releasing the index or reversing the statistic.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: free STAG index when TPT entry write fails write_tpt_entry() allocates a new STAG index with c4iw_get_resource() and bumps stats.stag.cur before programming the entry. When write_adapter_mem() fails, it returns the error without releasing the index or reversing the statistic. No MR is inserted into rhp->mrs, so deregistration never reclaims it, leaking the index until device teardown. Record whether this call allocated the index and, on a failed write, return it to tpt_table and decrement stats.stag.cur. Key the rollback on both the write error and that flag, not the error alone: a non-reset update carries a caller-owned STAG that this call did not allocate and must not free.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ec3eead217181d7360a11317a888ceb30807867c, < 5fe4731bfbd8d83c4a14b4af3a27329969ce8a99; >= ec3eead217181d7360a11317a888ceb30807867c, < 8f6976d635d190e3d7af7103daaa581cf1ccc12e; >= ec3eead217181d7360a11317a888ceb30807867c, < 9eeafcda1d6c11f0eec532243c4e96ec8c632bd7; >= ec3eead217181d7360a11317a888ceb30807867c, < 5a21e5114cec4cd3f8a2843d4c46bc49634d6e96; >= ec3eead217181d7360a11317a888ceb30807867c, < 2f17ca7ab5269ac2504e1039c3921373dccd7712; >= ec3eead217181d7360a11317a888ceb30807867c, < a2e37d1ab773be3cd26b1c19593ca2dbcece9c57; >= ec3eead217181d7360a11317a888ceb30807867c, < a64e2beb450179a5d43034af8d5476a11eac1486; >= ec3eead217181d7360a11317a888ceb30807867c, < fdfb5cea4bf070cdb31d997efd87bb684df041fd
LinuxLinux3.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90415?
In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: free STAG index when TPT entry write fails write_tpt_entry() allocates a new STAG index with c4iw_get_resource() and bumps stats.stag.cur before programming the entry. When write_adapter_mem() fails, it returns the error without releasing the index or reversing the statistic. No MR is inserted into rhp->mrs, so deregistration never reclaims it, leaking the index until device teardown. Record whether this call allocated the index and, on a failed write, return it to tpt_table and decrement stats.stag.cur. Key the rollback on both the write error and that flag, not the error alone: a non-reset update carries a caller-owned STAG that this call did not allocate and must not free.
How severe is CVE-2026-90415?
Severity scoring for CVE-2026-90415 is pending analysis.
How do I fix CVE-2026-90415?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST