CVE - CVE-2024-47678

CVE-ID
CVE-2024-47678	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: icmp: change the order of rate limits ICMP messages are ratelimited : After the blamed commits, the two rate limiters are applied in this order: 1) host wide ratelimit (icmp_global_allow()) 2) Per destination ratelimit (inetpeer based) In order to avoid side-channels attacks, we need to apply the per destination check first. This patch makes the following change : 1) icmp_global_allow() checks if the host wide limit is reached. But credits are not yet consumed. This is deferred to 3) 2) The per destination limit is checked/updated. This might add a new node in inetpeer tree. 3) icmp_global_consume() consumes tokens if prior operations succeeded. This means that host wide ratelimit is still effective in keeping inetpeer tree small even under DDOS. As a bonus, I removed icmp_global.lock as the fast path can use a lock-free operation.
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/483397b4ba280813e4a9c161a0a85172ddb43d19 URL:https://git.kernel.org/stable/c/483397b4ba280813e4a9c161a0a85172ddb43d19 MISC:https://git.kernel.org/stable/c/662ec52260cc07b9ae53ecd3925183c29d34288b URL:https://git.kernel.org/stable/c/662ec52260cc07b9ae53ecd3925183c29d34288b MISC:https://git.kernel.org/stable/c/8c2bd38b95f75f3d2a08c93e35303e26d480d24e URL:https://git.kernel.org/stable/c/8c2bd38b95f75f3d2a08c93e35303e26d480d24e MISC:https://git.kernel.org/stable/c/997ba8889611891f91e8ad83583466aeab6239a3 URL:https://git.kernel.org/stable/c/997ba8889611891f91e8ad83583466aeab6239a3 MISC:https://git.kernel.org/stable/c/a7722921adb046e3836eb84372241f32584bdb07 URL:https://git.kernel.org/stable/c/a7722921adb046e3836eb84372241f32584bdb07
Assigning CNA
kernel.org
Date Record Created
20240930	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 (20240930)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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