01 Record

CVE-2026-46321

tun: free page on short-frame rejection in tun_xdp_one()

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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02 Description

tun: free page on short-frame rejection in tun_xdp_one()

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 2.5% of scored records. A rank, not a probability.
NVD base score: 7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-10-15.
Red Hat severity: Moderate. 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: 2026-06-09 12:11Z4 MO AGO
Last updated: 2026-10-15 01:21Z14 DAYS AGO
Reserved: 2026-05-13
Assigning CNA: Linux
Record state: PUBLISHED
Severity: High (CVSS 7.1)
CNA CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weaknesses: No CWE assigned
Data version: 5.2
Document digest: 11d76337bc12fce22db97f1a0443e657cd9cb1dde2f96598f46440fd880faa05

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux6100e0237204890269e3f934acfc50d35fd6f319 to < 0a6f46a9332ad6958992d64d3b3a81a80b2ca940, 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 to < 0e8211fcf9426f5adddf32516ba0f400ceb9544d, ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 to < e915445942af6dcea628bf66d6241641201a0c41, d5ad89b7d01ed4e66fd04734fc63d6e78536692a to < 5b34f9e4fe2f203724a6e893d6df0316b9670057, 049584807f1d797fc3078b68035450a9769eb5c3 to < 69863ff2720a0e9871f1a5710f2a33a94217fee0, 049584807f1d797fc3078b68035450a9769eb5c3 to < 37a1c268c2c8090bf4dc552d732bd23ba36f8eb0, 049584807f1d797fc3078b68035450a9769eb5c3 to < 98c67be9eb9de72465a071949e84a3cdb8fab5a3, 049584807f1d797fc3078b68035450a9769eb5c3 to < f4feb1e20058e407cb00f45aff47f5b7e19a6bbf, 32b0aaba5dbc85816898167d9b5d45a22eae82e9, a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb, 8418f55302fa1d2eeb73e16e345167e545c598a5, 5.10.223 to < 5.10.259, 5.15.164 to < 5.15.210, 6.1.102 to < 6.1.176, 6.6.43 to < 6.6.143, 5.4.281 to < 5.5, 6.9.12 to < 6.10, 6.10.2 to < 6.11, 6.11—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/0a6f46a9332ad6958992d64d3b3a81a80b2ca940
git.kernel.orghttps://git.kernel.org/stable/c/0e8211fcf9426f5adddf32516ba0f400ceb9544d
git.kernel.orghttps://git.kernel.org/stable/c/e915445942af6dcea628bf66d6241641201a0c41
git.kernel.orghttps://git.kernel.org/stable/c/5b34f9e4fe2f203724a6e893d6df0316b9670057
git.kernel.orghttps://git.kernel.org/stable/c/69863ff2720a0e9871f1a5710f2a33a94217fee0
git.kernel.orghttps://git.kernel.org/stable/c/37a1c268c2c8090bf4dc552d732bd23ba36f8eb0
git.kernel.orghttps://git.kernel.org/stable/c/98c67be9eb9de72465a071949e84a3cdb8fab5a3
git.kernel.orghttps://git.kernel.org/stable/c/f4feb1e20058e407cb00f45aff47f5b7e19a6bbf
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-784472.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.176-1

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.