averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-09-22 09:34:56 +02:00
Code Issues Packages Projects Releases Wiki Activity

cxl/test: Zero out LSA backing memory to avoid leaking to user

Browse Source 
[ Upstream commit 60f065dbaf ]

Memory through vmalloc() is not zeroed out. When this memory is copied
into output payload, it leaks memory content to user. Use vzalloc()
instead to zero out the memory.

Suggested-by: sashiko-bot
Link: https://lore.kernel.org/linux-cxl/20260605173146.2B9A31F00893@smtp.kernel.org/
Fixes: 7d3eb23c4c ("tools/testing/cxl: Introduce a mock memory device + driver")
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://patch.msgid.link/20260605184426.4070913-1-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dave Jiang
2026-07-24 16:16:08 +02:00
committed by Greg Kroah-Hartman
parent 42a9a76f31
commit d2acea4f47
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/testing/cxl/test/mem.c
+1 -1
View File
@@ -1701,7 +1701,7 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
return -ENOMEM;
dev_set_drvdata(dev, mdata);
mdata->lsa = vmalloc(LSA_SIZE);
mdata->lsa = vzalloc(LSA_SIZE);
if (!mdata->lsa)
return -ENOMEM;
mdata->fw = vmalloc(FW_SIZE);