Description
In the Linux kernel, the following vulnerability has been resolved: IB/core: Implement a limit on UMAD receive List The existing behavior of ib_umad, which maintains received MAD packets in an unbounded list, poses a risk of uncontrolled growth. As user-space applications extract packets from this list, the rate of extraction may not match the rate of incoming packets, leading to potential list overflow. To address this, we introduce a limit to the size of the list. After considering typical scenarios, such as OpenSM processing, which can handle approximately 100k packets per second, and the 1-second retry timeout for most packets, we set the list size limit to 200k. Packets received beyond this limit are dropped, assuming they are likely timed out by the time they are handled by user-space. Notably, packets queued on the receive list due to reasons like timed-out sends are preserved even when the list is full.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1288cf1cceb0e6df276e182f5412370fb4169bcbaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b4913702419d064ec4c4bbf7270643c95cc89a1baffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 62349fbf86b5e13b02721bdadf98c29afd1e7b5faffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d73cb8862e4d6760ccc94d3b57b9ef6271400607affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 63d202d948bb6d3a28cd8e8b96b160fa53e18baaaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b8c5f635997f49c625178d1a0cb32a80ed33abe6affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a6627fba793cc75b7365d9504a0095fb2902dda4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ca0b44e20a6f3032224599f02e7c8fb49525c894affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected4.19.318 to ≤ 4.19.*unaffected5.4.280 to ≤ 5.4.*unaffected5.10.222 to ≤ 5.10.*unaffected5.15.163 to ≤ 5.15.*unaffected6.1.98 to ≤ 6.1.*unaffected6.6.39 to ≤ 6.6.*unaffected6.9.9 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/1288cf1cceb0e6df276e182f5412370fb4169bcb ↗
- https://git.kernel.org/stable/c/b4913702419d064ec4c4bbf7270643c95cc89a1b ↗
- https://git.kernel.org/stable/c/62349fbf86b5e13b02721bdadf98c29afd1e7b5f ↗
- https://git.kernel.org/stable/c/d73cb8862e4d6760ccc94d3b57b9ef6271400607 ↗
- https://git.kernel.org/stable/c/63d202d948bb6d3a28cd8e8b96b160fa53e18baa ↗
- https://git.kernel.org/stable/c/b8c5f635997f49c625178d1a0cb32a80ed33abe6 ↗
- https://git.kernel.org/stable/c/a6627fba793cc75b7365d9504a0095fb2902dda4 ↗
- https://git.kernel.org/stable/c/ca0b44e20a6f3032224599f02e7c8fb49525c894 ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗