5.15-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 2c260f33b55c..ad1f671ffc37 100644 --- a/net/ncsi/internal.h +++ b/net/ncsi/internal.h @@ -110,7 +110,7 @@ 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 8668888c5a2f..d5ed80731e89 100644 --- a/net/ncsi/ncsi-rsp.c +++ b/net/ncsi/ncsi-rsp.c @@ -775,6 +775,7 @@ 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]);