01 Record

CVE-2026-64026

rxrpc: Fix DATA decrypt vs splice() by copying data to buffer in recvmsg

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

rxrpc: Fix DATA decrypt vs splice() by copying data to buffer in recvmsg

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.10% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 1.1% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-07-19 15:39Z3 MO AGO

Last updated

2026-10-19 20:28Z10 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
CWE-787Out-of-bounds WriteBase
CWE-366Race Condition within a ThreadBase

Data version

5.2

Document digest

d8eb7cd2f658be1886d0cccc0ea8c85ea7e2b3a6f7b53bfda9540598422cfd96

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd0d5c0cd1e711c98703f3544c1e6fc1372898de5 to < a05bf6d9e621fa71e89ccebe3047ba45218d7b38, d0d5c0cd1e711c98703f3544c1e6fc1372898de5 to < b94a6ccbaf1104dd980150a65fdeb2f69d17d2f5, d0d5c0cd1e711c98703f3544c1e6fc1372898de5 to < 46cb765e2e5ad52303ea157e10d370bb6b7acbbf, d0d5c0cd1e711c98703f3544c1e6fc1372898de5 to < c580087743712112778a06d65a4074053072d7bf, d0d5c0cd1e711c98703f3544c1e6fc1372898de5 to < d2bc90cf6c75cb96d2ce549be6c35efa3099d25b, 5.3—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/a05bf6d9e621fa71e89ccebe3047ba45218d7b38
git.kernel.orghttps://git.kernel.org/stable/c/b94a6ccbaf1104dd980150a65fdeb2f69d17d2f5
git.kernel.orghttps://git.kernel.org/stable/c/46cb765e2e5ad52303ea157e10d370bb6b7acbbf
git.kernel.orghttps://git.kernel.org/stable/c/c580087743712112778a06d65a4074053072d7bf
git.kernel.orghttps://git.kernel.org/stable/c/d2bc90cf6c75cb96d2ce549be6c35efa3099d25b

07 Fixed in

Debian 12

linux
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.94-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.0.12-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.