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msm: ipa: Null terminated interface name string argument

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received from ioctl

WAN MTU IOCTL received NULL terminated the interface name
string to prevent out of bound memory access while printing
interface name.

Change-Id: I4ca8021e91689f2b1bf0bef7917a5fc7c2168aef
Signed-off-by: Avinash Kumar <quic_avku@quicinc.com>
(cherry picked from commit b639c459e4f7eedc361cee795489de3d379e7e0c)
This commit is contained in:
Avinash Kumar 2023-09-11 12:17:20 +05:30
commit 75044ebe4b
1 changed files with 4 additions and 0 deletions
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4
drivers/platform/msm/ipa/ipa_v3/rmnet_ipa.c
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@ -4950,6 +4950,10 @@ int rmnet_ipa3_get_wan_mtu(
int rmnet_index;
mux_channel = rmnet_ipa3_ctx->mux_channel;
/* prevent string buffer overflows */
data->if_name[IPA_RESOURCE_NAME_MAX-1] = '\0';
rmnet_index =
find_vchannel_name_index(data->if_name);