Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ec3eead217181d7360a11317a888ceb30807867c before 5fe4731bfbd8d83c4a14b4af3a27329969ce8a99; affected ec3eead217181d7360a11317a888ceb30807867c before 8f6976d635d190e3d7af7103daaa581cf1ccc12e; affected ec3eead217181d7360a11317a888ceb30807867c before 9eeafcda1d6c11f0eec532243c4e96ec8c632bd7; affected ec3eead217181d7360a11317a888ceb30807867c before 5a21e5114cec4cd3f8a2843d4c46bc49634d6e96; affected ec3eead217181d7360a11317a888ceb30807867c before 2f17ca7ab5269ac2504e1039c3921373dccd7712; affected ec3eead217181d7360a11317a888ceb30807867c before a2e37d1ab773be3cd26b1c19593ca2dbcece9c57; affected ec3eead217181d7360a11317a888ceb30807867c before a64e2beb450179a5d43034af8d5476a11eac1486; affected ec3eead217181d7360a11317a888ceb30807867c before fdfb5cea4bf070cdb31d997efd87bb684df041fd |
| Linux / Linux | affected 3.5; unaffected 0 before 3.5; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/5fe4731bfbd8d83c4a14b4af3a27329969ce8a99
- https://git.kernel.org/stable/c/8f6976d635d190e3d7af7103daaa581cf1ccc12e
- https://git.kernel.org/stable/c/9eeafcda1d6c11f0eec532243c4e96ec8c632bd7
- https://git.kernel.org/stable/c/5a21e5114cec4cd3f8a2843d4c46bc49634d6e96
- https://git.kernel.org/stable/c/2f17ca7ab5269ac2504e1039c3921373dccd7712
- https://git.kernel.org/stable/c/a2e37d1ab773be3cd26b1c19593ca2dbcece9c57
- https://git.kernel.org/stable/c/a64e2beb450179a5d43034af8d5476a11eac1486
- https://git.kernel.org/stable/c/fdfb5cea4bf070cdb31d997efd87bb684df041fd