In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix responder length checking for UD request packets
According to the IBA specification:
If a UD request packet is detected with an invalid length, the request
shall be an invalid request and it shall be silently dropped by
the responder. The responder then waits for a new request packet.
commit 689c5421bfe0 (“RDMA/rxe: Fix incorrect responder length checking”)
defers responder length check for UD QPs in function copy_data
.
But it introduces a regression issue for UD QPs.
When the packet size is too large to fit in the receive buffer.
copy_data
will return error code -EINVAL. Then send_data_in
will return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into
ERROR state.
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_resp.c"
],
"versions": [
{
"version": "689c5421bfe0",
"lessThan": "163868ec1f6c",
"status": "affected",
"versionType": "git"
},
{
"version": "689c5421bfe0",
"lessThan": "943c94f41dfe",
"status": "affected",
"versionType": "git"
},
{
"version": "689c5421bfe0",
"lessThan": "f67ac0061c76",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_resp.c"
],
"versions": [
{
"version": "6.2",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.2",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.36",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9.7",
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.10",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]