CVE-2017-7645
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.9.25-1 |
| debian | bullseye | fixed | 4.9.25-1 |
| debian | forky | fixed | 4.9.25-1 |
| debian | sid | fixed | 4.9.25-1 |
| debian | trixie | fixed | 4.9.25-1 |
| debian | 8.0 | affected | |
| debian | 9.0 | affected | |
| ubuntu | 14.04 | affected | |
| linux-kernel | affected | 3.2.89 |
References
- http://www.debian.org/security/2017/dsa-3886
- http://www.securityfocus.com/bid/97950
- https://access.redhat.com/errata/RHSA-2017:1615
- https://access.redhat.com/errata/RHSA-2017:1616
- https://access.redhat.com/errata/RHSA-2017:1647
- https://access.redhat.com/errata/RHSA-2018:1319
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6838a29ecb484c97e4efef9429643b9851fba6e
- https://github.com/torvalds/linux/commit/e6838a29ecb484c97e4efef9429643b9851fba6e
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://marc.info/?l=linux-nfs&m=149218228327497&w=2
- https://marc.info/?l=linux-nfs&m=149247516212924&w=2
- https://usn.ubuntu.com/3754-1/
- https://www.suse.com/security/cve/CVE-2017-7645.html
- https://security-tracker.debian.org/tracker/CVE-2017-7645
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.