mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl() (CVE-2018-8087)
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@ -669,6 +669,10 @@ linux (4.15.11-1) UNRELEASED; urgency=medium
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* [arm64] Apply patch from linux-next to fix eMMC corruption on
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Odroid-C2 (Closes: #879072).
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[ Salvatore Bonaccorso ]
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* mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl()
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(CVE-2018-8087)
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-- Salvatore Bonaccorso <carnil@debian.org> Tue, 20 Feb 2018 21:51:39 +0100
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linux (4.15.4-1) unstable; urgency=medium
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37
debian/patches/bugfix/all/mac80211_hwsim-fix-possible-memory-leak-in-hwsim_new.patch
vendored
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37
debian/patches/bugfix/all/mac80211_hwsim-fix-possible-memory-leak-in-hwsim_new.patch
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@ -0,0 +1,37 @@
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From: "weiyongjun (A)" <weiyongjun1@huawei.com>
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Date: Thu, 18 Jan 2018 02:23:34 +0000
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Subject: mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl()
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Origin: https://git.kernel.org/linus/0ddcff49b672239dda94d70d0fcf50317a9f4b51
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Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2018-8087
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'hwname' is malloced in hwsim_new_radio_nl() and should be freed
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before leaving from the error handling cases, otherwise it will cause
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memory leak.
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Fixes: ff4dd73dd2b4 ("mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length")
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Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
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Reviewed-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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drivers/net/wireless/mac80211_hwsim.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
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index 6bf063adcbde..66c2ac0397da 100644
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--- a/drivers/net/wireless/mac80211_hwsim.c
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+++ b/drivers/net/wireless/mac80211_hwsim.c
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@@ -3197,8 +3197,10 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
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if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
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u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
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- if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
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+ if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
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+ kfree(hwname);
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return -EINVAL;
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+ }
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param.regd = hwsim_world_regdom_custom[idx];
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}
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--
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2.16.2
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@ -119,6 +119,7 @@ features/all/lockdown/arm64-add-kernel-config-option-to-lock-down-when.patch
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# Security fixes
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debian/i386-686-pae-pci-set-pci-nobios-by-default.patch
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bugfix/all/mac80211_hwsim-fix-possible-memory-leak-in-hwsim_new.patch
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# Fix exported symbol versions
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bugfix/all/module-disable-matching-missing-version-crc.patch
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