by Kastro
Paper/Archive/CVE-2023-53769

CVE-2023-53769

Linux Linux — virt/coco/sev-guest: Double-buffer messages

EPSS 0.1%CVSS 9.3
critical.is priorityof 100
28
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 0.9.009 × 200.2No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linuxd5af44dde5461d125d1602ac913ab5c6bdf09b8b – < 577a64725bfd77645986168e953d405067ee565b577a64725bfd77645986168e953d405067ee565bCNA
Linuxd5af44dde5461d125d1602ac913ab5c6bdf09b8b – < c27dafc4aa50a29ec927b3aa84ac7b430071f682c27dafc4aa50a29ec927b3aa84ac7b430071f682CNA
Linuxd5af44dde5461d125d1602ac913ab5c6bdf09b8b – < 4b69c63f716cfda38e1210e65b68f67f6cee2ddf4b69c63f716cfda38e1210e65b68f67f6cee2ddfCNA
Linuxd5af44dde5461d125d1602ac913ab5c6bdf09b8b – < 965006103a14703cc42043bbf9b5e0cdf7a468ad965006103a14703cc42043bbf9b5e0cdf7a468adCNA
Linux5.19–CNA

Scores by source

Linux (CNA)9.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565brefgit.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682refgit.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddfrefgit.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad