Date: Wed, 12 Jun 2024 16:41:26 GMT From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 29f9003cbbb3 - stable/14 - LinuxKPI: 802.11: initalize lsta to NULL in linuxkpi_ieee80211_rx() Message-ID: <202406121641.45CGfQBU046846@gitrepo.freebsd.org>
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The branch stable/14 has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=29f9003cbbb3874fdbb02b99069868d00bcdff5a commit 29f9003cbbb3874fdbb02b99069868d00bcdff5a Author: Bjoern A. Zeeb <bz@FreeBSD.org> AuthorDate: 2024-06-05 22:35:00 +0000 Commit: Bjoern A. Zeeb <bz@FreeBSD.org> CommitDate: 2024-06-12 13:59:11 +0000 LinuxKPI: 802.11: initalize lsta to NULL in linuxkpi_ieee80211_rx() The logic following this new assignment in some cases may not set lsta but the later tracing is checking for it to be != NULL. With lsta not initialized that check may not hold up and later we would dereference lsta->state and possibly panic. Sponsored by: The FreeBSD Foundation Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D45507 (cherry picked from commit 582469016aed4fac3a7ead24dc31000edbb7e823) --- sys/compat/linuxkpi/common/src/linux_80211.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sys/compat/linuxkpi/common/src/linux_80211.c b/sys/compat/linuxkpi/common/src/linux_80211.c index ecacb74f01f3..6c96f1541488 100644 --- a/sys/compat/linuxkpi/common/src/linux_80211.c +++ b/sys/compat/linuxkpi/common/src/linux_80211.c @@ -5055,6 +5055,7 @@ no_trace_beacons: goto err; } + lsta = NULL; if (sta != NULL) { lsta = STA_TO_LSTA(sta); ni = ieee80211_ref_node(lsta->ni);
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