<div dir="ltr"><div>Applied to lunar,kinetic,jammy,focal,bionic linux master-next</div><div><br></div><div>Thanks, <br></div><div><br></div><div>- Luke<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, May 9, 2023 at 9:07 PM Yuxuan Luo <<a href="mailto:yuxuan.luo@canonical.com">yuxuan.luo@canonical.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">[Impact]<br>
A slab-out-of-bound read problem was found in brcmf_get_assoc_ies in <br>
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the Linux <br>
Kernel. This issue could occur when assoc_info->req_len data is bigger than <br>
the size of the buffer, defined as WL_EXTRA_BUF_MAX, leading to a denial of <br>
service. <br>
<br>
[Backport]<br>
It is a clean cherry pick for L/K/J/F.<br>
For Bionic, substitute `bphy_err()` with `brcmf_err()` since `bphy_err()` was<br>
yet to be introduced in the Bionic tree.<br>
<br>
[Test]<br>
Compile and smoke tested via modprobe and rmmod the brmcfmac module.<br>
<br>
[Potential Regression]<br>
Expecting low potential of regression as the fix only adds an additionaly layer<br>
of sanity check.<br>
<br>
Jisoo Jang (1):<br>
wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()<br>
<br>
drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c | 5 +++++<br>
1 file changed, 5 insertions(+)<br>
<br>
-- <br>
2.34.1<br>
<br>
<br>
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</blockquote></div></div>