5.10-stable review patch. If anyone has any objections, please let me know.
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From: Hari Kalavakunta kalavakunta.hari.prasad@gmail.com
[ Upstream commit 8e16170ae972c7fed132bc928914a2ffb94690fc ]
In NC-SI spec v1.2 section 8.4.44.2, the firmware name doesn't need to be null terminated while its size occupies the full size of the field. Fix the buffer overflow issue by adding one additional byte for null terminator.
Signed-off-by: Hari Kalavakunta kalavakunta.hari.prasad@gmail.com Reviewed-by: Paul Fertser fercerpav@gmail.com Link: https://patch.msgid.link/20250610193338.1368-1-kalavakunta.hari.prasad@gmail... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/ncsi/internal.h | 2 +- net/ncsi/ncsi-rsp.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h index c61d2e2e93ad..6ebf9e55c046 100644 --- a/net/ncsi/internal.h +++ b/net/ncsi/internal.h @@ -107,7 +107,7 @@ struct ncsi_channel_version { u8 update; /* NCSI version update */ char alpha1; /* NCSI version alpha1 */ char alpha2; /* NCSI version alpha2 */ - u8 fw_name[12]; /* Firmware name string */ + u8 fw_name[12 + 1]; /* Firmware name string */ u32 fw_version; /* Firmware version */ u16 pci_ids[4]; /* PCI identification */ u32 mf_id; /* Manufacture ID */ diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c index 88fb86cf7b20..c1d42bbfdc7e 100644 --- a/net/ncsi/ncsi-rsp.c +++ b/net/ncsi/ncsi-rsp.c @@ -782,6 +782,7 @@ static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) ncv->alpha1 = rsp->alpha1; ncv->alpha2 = rsp->alpha2; memcpy(ncv->fw_name, rsp->fw_name, 12); + ncv->fw_name[12] = '\0'; ncv->fw_version = ntohl(rsp->fw_version); for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]);