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authorJustin M. Forbes <jforbes@fedoraproject.org>2020-01-27 08:03:45 -0600
committerJustin M. Forbes <jforbes@fedoraproject.org>2020-01-27 08:03:45 -0600
commitdb9309152e2b8b907dbc2a6242044c02fea60a83 (patch)
treebdd5175879b37f82056d8aa530443123d2bf65d6 /libertas-Fix-two-buffer-overflows-at-parsing-bss-descriptor.patch
parent414db95e440ee7a8a961d6bad3839c85584f7784 (diff)
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Diffstat (limited to 'libertas-Fix-two-buffer-overflows-at-parsing-bss-descriptor.patch')
-rw-r--r--libertas-Fix-two-buffer-overflows-at-parsing-bss-descriptor.patch120
1 files changed, 0 insertions, 120 deletions
diff --git a/libertas-Fix-two-buffer-overflows-at-parsing-bss-descriptor.patch b/libertas-Fix-two-buffer-overflows-at-parsing-bss-descriptor.patch
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-From: huangwenabc@gmail.com
-To: linux-wireless@vger.kernel.org
-Cc: linux-distros@vs.openwall.org, security@kernel.org,
- libertas-dev@lists.infradead.org
-Subject: [PATCH] libertas: Fix two buffer overflows at parsing bss descriptor
-Date: Fri, 22 Nov 2019 13:29:17 +0800
-Message-Id: <20191122052917.11309-1-huangwenabc@gmail.com>
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-From: Wen Huang <huangwenabc@gmail.com>
-
-add_ie_rates() copys rates without checking the length
-in bss descriptor from remote AP.when victim connects to
-remote attacker, this may trigger buffer overflow.
-lbs_ibss_join_existing() copys rates without checking the length
-in bss descriptor from remote IBSS node.when victim connects to
-remote attacker, this may trigger buffer overflow.
-Fix them by putting the length check before performing copy.
-
-This fix addresses CVE-2019-14896 and CVE-2019-14897.
-
-Signed-off-by: Wen Huang <huangwenabc@gmail.com>
----
- drivers/net/wireless/marvell/libertas/cfg.c | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/drivers/net/wireless/marvell/libertas/cfg.c b/drivers/net/wireless/marvell/libertas/cfg.c
-index 57edfada0..290280764 100644
---- a/drivers/net/wireless/marvell/libertas/cfg.c
-+++ b/drivers/net/wireless/marvell/libertas/cfg.c
-@@ -273,6 +273,10 @@ add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
- int hw, ap, ap_max = ie[1];
- u8 hw_rate;
-
-+ if (ap_max > MAX_RATES) {
-+ lbs_deb_assoc("invalid rates\n");
-+ return tlv;
-+ }
- /* Advance past IE header */
- ie += 2;
-
-@@ -1777,6 +1781,10 @@ static int lbs_ibss_join_existing(struct lbs_private *priv,
- } else {
- int hw, i;
- u8 rates_max = rates_eid[1];
-+ if (rates_max > MAX_RATES) {
-+ lbs_deb_join("invalid rates");
-+ goto out;
-+ }
- u8 *rates = cmd.bss.rates;
- for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
- u8 hw_rate = lbs_rates[hw].bitrate / 5;