- 7.1HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tun_xdp_one() tun_xdp_one() returns -EINVAL on a frame shorter than ETH_HLEN without freeing the page that vhost_net_build_xdp() allocated for it. tun_sendmsg() discards that -EINVAL and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page; each short frame in a batch leaks one page-frag chunk. A local process that can open /dev/net/tun and /dev/vhost-net can hit this path: it attaches a tun/tap device as the vhost-net backend and feeds TX descriptors whose length minus the virtio-net header is below ETH_HLEN. Each kick leaks the page-frag chunks for that batch, and a tight submission loop exhausts host memory and triggers an OOM panic. Free the page before returning -EINVAL, matching the XDP-program error path in the same function.
Timeline
ID reserved
By Linux
- 27 days later
· 27 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 6100e0237204890269e3f934acfc50d35fd6f319 – < 0a6f46a9332ad6958992d64d3b3a81a80b2ca940
- affected 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 – < 0e8211fcf9426f5adddf32516ba0f400ceb9544d
- affected ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 – < e915445942af6dcea628bf66d6241641201a0c41
- affected d5ad89b7d01ed4e66fd04734fc63d6e78536692a – < 5b34f9e4fe2f203724a6e893d6df0316b9670057
- affected 049584807f1d797fc3078b68035450a9769eb5c3 – < 69863ff2720a0e9871f1a5710f2a33a94217fee0
- affected 049584807f1d797fc3078b68035450a9769eb5c3 – < 37a1c268c2c8090bf4dc552d732bd23ba36f8eb0
- affected 049584807f1d797fc3078b68035450a9769eb5c3 – < 98c67be9eb9de72465a071949e84a3cdb8fab5a3
- affected 049584807f1d797fc3078b68035450a9769eb5c3 – < f4feb1e20058e407cb00f45aff47f5b7e19a6bbf
- affected 32b0aaba5dbc85816898167d9b5d45a22eae82e9
- affected a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb
- affected 8418f55302fa1d2eeb73e16e345167e545c598a5
- affected 5.10.223 – < 5.10.259
- affected 5.15.164 – < 5.15.210
- affected 6.1.102 – < 6.1.176
- affected 6.6.43 – < 6.6.143
- affected 5.4.281 – < 5.5
- affected 6.9.12 – < 6.10
- affected 6.10.2 – < 6.11
- affected 6.11
- unaffected < 6.11
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.93 – ≤ 6.12.*
- unaffected 6.18.35 – ≤ 6.18.*
- unaffected 7.0.12 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References9
- https://git.kernel.org/stable/c/0a6f46a9332ad6958992d64d3b3a81a80b2ca940 (opens in a new tab)
- https://git.kernel.org/stable/c/0e8211fcf9426f5adddf32516ba0f400ceb9544d (opens in a new tab)
- https://git.kernel.org/stable/c/e915445942af6dcea628bf66d6241641201a0c41 (opens in a new tab)
- https://git.kernel.org/stable/c/5b34f9e4fe2f203724a6e893d6df0316b9670057 (opens in a new tab)
- https://git.kernel.org/stable/c/69863ff2720a0e9871f1a5710f2a33a94217fee0 (opens in a new tab)
- https://git.kernel.org/stable/c/37a1c268c2c8090bf4dc552d732bd23ba36f8eb0 (opens in a new tab)
- https://git.kernel.org/stable/c/98c67be9eb9de72465a071949e84a3cdb8fab5a3 (opens in a new tab)
- https://git.kernel.org/stable/c/f4feb1e20058e407cb00f45aff47f5b7e19a6bbf (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-35411 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46321)Record last updated .