CVE-2026-31536
Description
In the Linux kernel, the following vulnerability has been resolved: smb: server: let send_done handle a completion without IB_SEND_SIGNALED With smbdirect_send_batch processing we likely have requests without IB_SEND_SIGNALED, which will be destroyed in the final request that has IB_SEND_SIGNALED set. If the connection is broken all requests are signaled even without explicit IB_SEND_SIGNALED.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-31536
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-31536.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/e38b415c024bc3b6321bf8650dbf3f4aab8e74b3
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/9da82dc73cb03e85d716a2609364572367a5ff47
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/24082642654f3e5149913946e89c00a297a8868f
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.18.12-1 |
| debian | sid | fixed | 6.18.12-1 |
| debian | trixie | affected | |
| linux-kernel | affected | 6.18.11 |
References
- https://git.kernel.org/stable/c/24082642654f3e5149913946e89c00a297a8868f
- https://git.kernel.org/stable/c/9da82dc73cb03e85d716a2609364572367a5ff47
- https://git.kernel.org/stable/c/e38b415c024bc3b6321bf8650dbf3f4aab8e74b3
- https://www.suse.com/security/cve/CVE-2026-31536.html
- https://security-tracker.debian.org/tracker/CVE-2026-31536
Verify integrity in audit chain (admin only). AS-IS.