CVSS 7.5 · High EPSS 0,59%
Kerentanan Improper Check for Unusual or Exceptional Conditions pada linux kernel. Skor CVSS 3.1 7.5 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: sunrpc: fix handling of server side tls alerts Scott Mayhew discovered a security exploit in NFS over TLS in tls_alert_recv() due to its assumption it can read data from the msg iterator's kvec.. kTLS implementation splits TLS non-data record payload between the control message buffer (which includes the type such as TLS aler or TLS cipher change) and the rest of the payload (say TLS alert's level/description) which goes into the msg payload buffer. This patch proposes to rework how control messages are setup and used by sock_recvmsg(). If no control message structure is setup, kTLS layer will read and process TLS data record types. As soon as it encounters a TLS control message, it would return an error. At that point, NFS can setup a kvec backed msg buffer and read in the control message such as a TLS alert. Msg iterator can advance the kvec pointer as a part of the copy process thus we need to revert the iterator before calling into the tls_alert_recv.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 6.4 hingga sebelum 6.6.102 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.42 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.15.10 |
| linux | linux kernel | Versi 6.16 hingga sebelum 6.16.1 |
| linux | linux kernel | Versi 6.17 rc1 |