FAILED: Patch "media: qcom: camss: vfe: Fix out-of-bounds access in vfe_isr_reg_update()" failed to apply to 6.6-stable tree

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From d965919af524e68cb2ab1a685872050ad2ee933d Mon Sep 17 00:00:00 2001
From: Alper Ak <[email protected]>
Date: Mon, 29 Dec 2025 10:52:17 +0300
Subject: [PATCH] media: qcom: camss: vfe: Fix out-of-bounds access in
vfe_isr_reg_update()

vfe_isr() iterates using MSM_VFE_IMAGE_MASTERS_NUM(7) as the loop bound and passes the index to vfe_isr_reg_update(). However, vfe->line[] array is defined with VFE_LINE_NUM_MAX(4):

    struct vfe_line line[VFE_LINE_NUM_MAX];

When index is 4, 5, 6, the access to vfe->line[line_id] exceeds the array bounds and resulting in out-of-bounds memory access.

Fix this by using separate loops for output lines and write masters.

---
 drivers/media/platform/qcom/camss/camss-vfe-480.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

index 4feea590a47bc..d73f733fde045 100644
@@ -202,11 +202,13 @@ static irqreturn_t vfe_isr(int irq, void *dev)
 		writel_relaxed(status, vfe->base + VFE_BUS_IRQ_CLEAR(0));
 		writel_relaxed(1, vfe->base + VFE_BUS_IRQ_CLEAR_GLOBAL);
 
-		/* Loop through all WMs IRQs */
-		for (i = 0; i < MSM_VFE_IMAGE_MASTERS_NUM; i++) {
+		for (i = 0; i < MAX_VFE_OUTPUT_LINES; i++) {
 			if (status & BUS_IRQ_MASK_0_RDI_RUP(vfe, i))
 				vfe_isr_reg_update(vfe, i);
+		}
 
+		/* Loop through all WMs IRQs */
+		for (i = 0; i < MSM_VFE_IMAGE_MASTERS_NUM; i++) {
 			if (status & BUS_IRQ_MASK_0_COMP_DONE(vfe, RDI_COMP_GROUP(i)))
 				vfe_buf_done(vfe, i);
 		}

2.51.0