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authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-22 05:58:27 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-22 05:58:27 +0300
commit8565d64430f8278bea38dab0a3ab60b4e11c71e4 (patch)
tree71be2df8795c4862d45b3e1395fedf3092f723cf /drivers/char/tpm
parentd0858cbdef50d973ca6b38c0ed0cce54cb2b6182 (diff)
parentfad278388e01e3658a356118bed8ee2c2408d280 (diff)
downloadlinux-8565d64430f8278bea38dab0a3ab60b4e11c71e4.tar.xz
Merge tag 'bounds-fixes-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull bounds fixes from Kees Cook: "These are a handful of buffer and array bounds fixes that I've been carrying in preparation for the coming memcpy improvements and the enabling of '-Warray-bounds' globally. There are additional similar fixes in other maintainer's trees, but these ended up getting carried by me. :)" * tag 'bounds-fixes-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: media: omap3isp: Use struct_group() for memcpy() region tpm: vtpm_proxy: Check length to avoid compiler warning alpha: Silence -Warray-bounds warnings m68k: cmpxchg: Dereference matching size intel_th: msu: Use memset_startat() for clearing hw header KVM: x86: Replace memset() "optimization" with normal per-field writes
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm_vtpm_proxy.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c
index 91c772e38bb5..5c865987ba5c 100644
--- a/drivers/char/tpm/tpm_vtpm_proxy.c
+++ b/drivers/char/tpm/tpm_vtpm_proxy.c
@@ -91,7 +91,7 @@ static ssize_t vtpm_proxy_fops_read(struct file *filp, char __user *buf,
len = proxy_dev->req_len;
- if (count < len) {
+ if (count < len || len > sizeof(proxy_dev->buffer)) {
mutex_unlock(&proxy_dev->buf_lock);
pr_debug("Invalid size in recv: count=%zd, req_len=%zd\n",
count, len);