Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-100076
Linux Linux — staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0015 4.0 —
AFFECTED
Product Versions Fixed
Linux 554c0a3abf216c991c5ebddcdb2c08689ecd290b – —
Linux 4.12 – 6.18.52
TIMELINE
Sep 25 Reserved by Linux
Sep 25 Published (CNA: Linux)
Oct 2 ENRICHED — CVE-2026-100076 (Linux). Received CVSS 5.5 and CPE data from NVD.
Description
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths
issue_beacon(), issue_probersp() and issue_asocrsp() obtain a management
xmit_frame together with its xmit_buf from the driver's fixed-size
management-TX pools via alloc_mgtxmitframe(). On the normal path the frame
is handed to dump_mgntframe(), which transfers ownership and eventually
returns both objects to their pools (the frame and, for beacons, the buf
in rtl8723bs_mgnt_xmit(); other bufs via the pending-xmitbuf/TX-completion
path).
Several error/edge paths return early after a successful
alloc_mgtxmitframe() but before dump_mgntframe(), so ownership is never
transferred and neither object is freed:
- issue_beacon(): beacon larger than 512 bytes
- issue_probersp(): cur_network->ie_length > MAX_IE_SZ
- issue_probersp(): kzalloc() of the SSID scratch buffer fails
- issue_asocrsp(): pkt_type is neither ASSOCRSP nor REASSOCRSP
Because alloc_mgtxmitframe() removes the frame and buf from their free
lists (list_del_init) without placing them on any pending list, an
orphaned pair is on no list and referenced by nobody, so it is only
reclaimed at driver teardown. Repeated hits progressively exhaust the
management-TX pools until alloc_mgtxmitframe() returns NULL and the
interface can no longer send beacons or probe/assoc responses.
Free the frame and buffer on these paths, matching the existing correct
error handling in issue_assocreq().
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 25, 2026 | Reserved | Reserved by Linux |
| September 25, 2026 | Published | Published (CNA: Linux) |
| October 2, 2026 | ENRICHED | ENRICHED — CVE-2026-100076 (Linux). Received CVSS 5.5 and CPE data from NVD. |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Linux | Linux | — | 554c0a3abf216c991c5ebddcdb2c08689ecd290b | — |
| Linux | Linux | — | 4.12 | 6.18.52 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100076 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 Saturday, October 3, 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.
