HOMEVULNERABILITIESCVE-2026-31626
HIGH

CVE-2026-31626

Published: April 24, 2026· Updated: Apr 27, 2026

7.1
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.8th

Official Description

In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: initialize le_tmp64 in rtw_BIP_verify()

Initialize le_tmp64 to zero in rtw_BIP_verify() to prevent using

uninitialized data.

Smatch warns that only 6 bytes are copied to this 8-byte (u64)

variable, leaving the last two bytes uninitialized:

drivers/staging/rtl8723bs/core/rtw_security.c:1308 rtw_BIP_verify()

warn: not copying enough bytes for '&le_tmp64' (8 vs 6 bytes)

Initializing the variable at the start of the function fixes this

warning and ensures predictable behavior.

NVD Source

Technical Analysis

CVE-2026-31626 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/8c964b82a4e97ec7f25e17b803ee196009b38a57
PATCHhttps://git.kernel.org/stable/c/b487a7754d874230299d5a9c2710ec4df8b2ed8a
PATCHhttps://git.kernel.org/stable/c/c2026c6b603ebec52f55015496703fe79077accf
PATCHhttps://git.kernel.org/stable/c/c65ee4d3be5df395e48afbcd0946dd5fce4338a9
PATCHhttps://git.kernel.org/stable/c/d5b8f5f8d6fc09a8af5ed139c688660f578ed732
PATCHhttps://git.kernel.org/stable/c/ef74ce5f0bc0e53ce702d8a794f3957884a26efc

All References (6)

→
https://git.kernel.org/stable/c/8c964b82a4e97ec7f25e17b803ee196009b38a57Patch
→
https://git.kernel.org/stable/c/b487a7754d874230299d5a9c2710ec4df8b2ed8aPatch
→
https://git.kernel.org/stable/c/c2026c6b603ebec52f55015496703fe79077accfPatch
→
https://git.kernel.org/stable/c/c65ee4d3be5df395e48afbcd0946dd5fce4338a9Patch
→
https://git.kernel.org/stable/c/d5b8f5f8d6fc09a8af5ed139c688660f578ed732Patch
→
https://git.kernel.org/stable/c/ef74ce5f0bc0e53ce702d8a794f3957884a26efcPatch

Quick Facts

CVE IDCVE-2026-31626
CVSS Score7.1 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 24, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31626 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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