CVE-2022-48829
Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes iattr::ia_size is a loff_t, so these NFSv3 procedures must be careful to deal with incoming client size values that are larger than s64_max without corrupting the value. Silently capping the value results in storing a different value than the client passed in which is unexpected behavior, so remove the min_t() check in decode_sattr3(). Note that RFC 1813 permits only the WRITE procedure to return NFS3ERR_FBIG. We believe that NFSv3 reference implementations also return NFS3ERR_FBIG when ia_size is too large.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-48829
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-48829.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/a648fdeb7c0e17177a2280344d015dba3fbe3314
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/72c14aed6838b5d90b4dd926b6a339b34bb02e08
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/37f2d2cd8eadddbbd9c7bda327a9393399b2f89b
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 5.16.10-1 |
| debian | bullseye | fixed | 5.10.221-1 |
| debian | forky | fixed | 5.16.10-1 |
| debian | sid | fixed | 5.16.10-1 |
| debian | trixie | fixed | 5.16.10-1 |
| linux-kernel | affected | 5.4.295 | |
| linux-kernel | 5.17 | affected | |
References
- https://git.kernel.org/stable/c/37f2d2cd8eadddbbd9c7bda327a9393399b2f89b
- https://git.kernel.org/stable/c/72c14aed6838b5d90b4dd926b6a339b34bb02e08
- https://git.kernel.org/stable/c/a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3
- https://git.kernel.org/stable/c/a648fdeb7c0e17177a2280344d015dba3fbe3314
- https://git.kernel.org/stable/c/aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://www.suse.com/security/cve/CVE-2022-48829.html
- https://security-tracker.debian.org/tracker/CVE-2022-48829
Verify integrity in audit chain (admin only). AS-IS.