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wifi: brcm80211: handle pmk_op allocation failure

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[ Upstream commit b4152222e04cb8afeeca239c90e3fcaf4c553b42 ]

The kzalloc() in brcmf_pmksa_v3_op() will return null if the
physical memory has run out. As a result, if we dereference
the null value, the null pointer dereference bug will happen.

Return -ENOMEM from brcmf_pmksa_v3_op() if kzalloc() fails
for pmk_op.

Fixes: a96202acaea4 ("wifi: brcmfmac: cfg80211: Add support for PMKID_V3 operations")
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240229103153.18533-1-duoming@zju.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Duoming Zhou 2024-02-29 18:31:53 +08:00 committed by Sasha Levin
parent 6cada014b2
commit df62e22c2e
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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@ -4323,6 +4323,9 @@ brcmf_pmksa_v3_op(struct brcmf_if *ifp, struct cfg80211_pmksa *pmksa,
int ret;
pmk_op = kzalloc(sizeof(*pmk_op), GFP_KERNEL);
if (!pmk_op)
return -ENOMEM;
pmk_op->version = cpu_to_le16(BRCMF_PMKSA_VER_3);
if (!pmksa) {