CVE-2023-53769virt/coco/sev-guest: Double-buffer messages
- 9.3CriticalCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 99% 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: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.
Timeline
ID reserved
By Linux
Published
- 8 months later
· 8 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 | Critical9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.11% · top 99% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.
Affected products
- affected d5af44dde5461d125d1602ac913ab5c6bdf09b8b – < 577a64725bfd77645986168e953d405067ee565b
- affected d5af44dde5461d125d1602ac913ab5c6bdf09b8b – < c27dafc4aa50a29ec927b3aa84ac7b430071f682
- affected d5af44dde5461d125d1602ac913ab5c6bdf09b8b – < 4b69c63f716cfda38e1210e65b68f67f6cee2ddf
- affected d5af44dde5461d125d1602ac913ab5c6bdf09b8b – < 965006103a14703cc42043bbf9b5e0cdf7a468ad
- affected 5.19
- unaffected < 5.19
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References
References4
- https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b (opens in a new tab)
- https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682 (opens in a new tab)
- https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf (opens in a new tab)
- https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad (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-2023-60059 (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-2023-53769)Record last updated .