github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-28 01:55:51 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

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

Browse Source 
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>
This commit is contained in:
Dave Jiang 2026-06-05 11:44:26 -07:00
parent 81eafcada1
commit 60f065dbaf
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/testing/cxl/test/mem.c
View File

@ -1724,7 +1724,7 @@ 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);