CVE - CVE-2024-49974

CVE-ID
CVE-2024-49974	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: Limit the number of concurrent async COPY operations Nothing appears to limit the number of concurrent async COPY operations that clients can start. In addition, AFAICT each async COPY can copy an unlimited number of 4MB chunks, so can run for a long time. Thus IMO async COPY can become a DoS vector. Add a restriction mechanism that bounds the number of concurrent background COPY operations. Start simple and try to be fair -- this patch implements a per-namespace limit. An async COPY request that occurs while this limit is exceeded gets NFS4ERR_DELAY. The requesting client can choose to send the request again after a delay or fall back to a traditional read/write style copy. If there is need to make the mechanism more sophisticated, we can visit that in future patches.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/43e46ee5efc03990b223f7aa8b77aa9c3d3acfdf URL:https://git.kernel.org/stable/c/43e46ee5efc03990b223f7aa8b77aa9c3d3acfdf MISC:https://git.kernel.org/stable/c/6a488ad7745b8f64625c6d3a24ce7e448e83f11b URL:https://git.kernel.org/stable/c/6a488ad7745b8f64625c6d3a24ce7e448e83f11b MISC:https://git.kernel.org/stable/c/7ea9260874b779637aff6d24c344b8ef4ac862a0 URL:https://git.kernel.org/stable/c/7ea9260874b779637aff6d24c344b8ef4ac862a0 MISC:https://git.kernel.org/stable/c/9e52ff544e0bfa09ee339fd7b0937ee3c080c24e URL:https://git.kernel.org/stable/c/9e52ff544e0bfa09ee339fd7b0937ee3c080c24e MISC:https://git.kernel.org/stable/c/aadc3bbea163b6caaaebfdd2b6c4667fbc726752 URL:https://git.kernel.org/stable/c/aadc3bbea163b6caaaebfdd2b6c4667fbc726752 MISC:https://git.kernel.org/stable/c/ae267989b7b7933dfedcd26468d0a88fc3a9da9e URL:https://git.kernel.org/stable/c/ae267989b7b7933dfedcd26468d0a88fc3a9da9e MISC:https://git.kernel.org/stable/c/b4e21431a0db4854b5023cd5af001be557e6c3db URL:https://git.kernel.org/stable/c/b4e21431a0db4854b5023cd5af001be557e6c3db
Assigning CNA
kernel.org
Date Record Created
20241021	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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