Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — cifs: fix mid leak during reconnection after timeout threshold
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0026 18.0 —
AFFECTED
Product Versions Fixed
Linux 8e670f77c4a55013db6d23b962f9bf6673a5e7b6 – —
Linux 5.10 – 5.15.150
TIMELINE
Oct 4 Reserved by Linux
Oct 4 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2023-53597 (Linux). CVSS 7.5 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix mid leak during reconnection after timeout threshold
When the number of responses with status of STATUS_IO_TIMEOUT
exceeds a specified threshold (NUM_STATUS_IO_TIMEOUT), we reconnect
the connection. But we do not return the mid, or the credits
returned for the mid, or reduce the number of in-flight requests.
This bug could result in the server->in_flight count to go bad,
and also cause a leak in the mids.
This change moves the check to a few lines below where the
response is decrypted, even of the response is read from the
transform header. This way, the code for returning the mids
can be reused.
Also, the cifs_reconnect was reconnecting just the transport
connection before. In case of multi-channel, this may not be
what we want to do after several timeouts. Changed that to
reconnect the session and the tree too.
Also renamed NUM_STATUS_IO_TIMEOUT to a more appropriate name
MAX_STATUS_IO_TIMEOUT.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| October 4, 2025 | Reserved | Reserved by Linux |
| October 4, 2025 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2023-53597 (Linux). CVSS 7.5 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 8e670f77c4a55013db6d23b962f9bf6673a5e7b6 | — |
| Linux | Linux | — | 5.10 | 5.15.150 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-53597 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.