samsung_sm8750/android_kernel_samsung_sm8750
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation

Browse Source 
commit 023c1f2f0609218103cbcb48e0104b144d4a16dc upstream.

Currently during the multi-link element defragmentation process, the
multi-link element length added to the total IEs length when calculating
the length of remaining IEs after the multi-link element in
cfg80211_defrag_mle(). This could lead to out-of-bounds access if the
multi-link element or its corresponding fragment elements are the last
elements in the IEs buffer.

To address this issue, correctly calculate the remaining IEs length by
deducting the multi-link element end offset from total IEs end offset.

Cc: stable@vger.kernel.org
Fixes: 2481b5da9c ("wifi: cfg80211: handle BSS data contained in ML probe responses")
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://patch.msgid.link/20250424-fix_mle_defragmentation_oob_access-v1-1-84412a1743fa@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Veerendranath Jakkam
2025-04-24 18:01:42 +05:30
committed by Greg Kroah-Hartman
parent d2520dc79c
commit 73dde269a1
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/wireless/scan.c
View File

@@ -2511,7 +2511,7 @@ cfg80211_defrag_mle(const struct element *mle, const u8 *ie, size_t ielen,
/* Required length for first defragmentation */
buf_len = mle->datalen - 1;
for_each_element(elem, mle->data + mle->datalen,
ielen - sizeof(*mle) + mle->datalen) {
ie + ielen - mle->data - mle->datalen) {
if (elem->id != WLAN_EID_FRAGMENT)
break;