CVE-2023-54048
RDMA/bnxt_re: Prevent handling any completions after qp destroy
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Prevent handling any completions after qp destroy HW may generate completions that indicates QP is destroyed. Driver should not be scheduling any more completion handlers for this QP, after the QP is destroyed. Since CQs are active during the QP destroy, driver may still schedule completion handlers. This can cause a race where the destroy_cq and poll_cq running simultaneously. Snippet of kernel panic while doing bnxt_re driver load unload in loop. This indicates a poll after the CQ is freed. [77786.481636] Call Trace: [77786.481640] <TASK> [77786.481644] bnxt_re_poll_cq+0x14a/0x620 [bnxt_re] [77786.481658] ? kvm_clock_read+0x14/0x30 [77786.481693] __ib_process_cq+0x57/0x190 [ib_core] [77786.481728] ib_cq_poll_work+0x26/0x80 [ib_core] [77786.481761] process_one_work+0x1e5/0x3f0 [77786.481768] worker_thread+0x50/0x3a0 [77786.481785] ? __pfx_worker_thread+0x10/0x10 [77786.481790] kthread+0xe2/0x110 [77786.481794] ? __pfx_kthread+0x10/0x10 [77786.481797] ret_from_fork+0x2c/0x50 To avoid this, complete all completion handlers before returning the destroy QP. If free_cq is called soon after destroy_qp, IB stack will cancel the CQ work before invoking the destroy_cq verb and this will prevent any race mentioned.
Timeline
ID reserved
By Linux
Published
- 10 months later
· 10 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 1ac5a404797523cedaf424a3aaa3cf8f9548dff8 – < b79a0e71d6e8692e0b6da05f8aaa7d69191cf7e7
- affected 1ac5a404797523cedaf424a3aaa3cf8f9548dff8 – < b8500538b8f5b2cd86b02754c8de83eaa7a2d6ba
- affected 1ac5a404797523cedaf424a3aaa3cf8f9548dff8 – < 7faa6097694164380ed19600c7a7993d071270b9
- affected 1ac5a404797523cedaf424a3aaa3cf8f9548dff8 – < b5bbc6551297447d3cca55cf907079e206e9cd82
- affected 4.11
- unaffected < 4.11
- unaffected 5.15.124 – ≤ 5.15.*
- unaffected 6.1.43 – ≤ 6.1.*
- unaffected 6.4.8 – ≤ 6.4.*
- unaffected 6.5 – ≤ *
References (4)
- https://git.kernel.org/stable/c/b79a0e71d6e8692e0b6da05f8aaa7d69191cf7e7 (opens in a new tab)
- https://git.kernel.org/stable/c/b8500538b8f5b2cd86b02754c8de83eaa7a2d6ba (opens in a new tab)
- https://git.kernel.org/stable/c/7faa6097694164380ed19600c7a7993d071270b9 (opens in a new tab)
- https://git.kernel.org/stable/c/b5bbc6551297447d3cca55cf907079e206e9cd82 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-54048)Record last updated .