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[217.105.56.94]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bd4f4ded6dfsm214041666b.39.2026.05.15.03.42.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 May 2026 03:42:04 -0700 (PDT) Message-ID: <6a06f87c.643c4978.1f1059.84ae@mx.google.com> Date: Fri, 15 May 2026 03:42:04 -0700 (PDT) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: base64 From: Alexandru Hossu To: security@kernel.org Cc: linux-wireless@vger.kernel.org, johannes@sipsolutions.net Subject: [PATCH] wifi: cfg80211: validate common_info length in ieee80211_mle_size_ok() SGkgR3JlZywKCkhlcmUgaXMgdGhlIGZpeC4KCkFsZXhhbmRydQoKLS0tCgpGb3IgTUxFIHR5cGVz IHdpdGggYSBjb21tb25faW5mbyBsZW5ndGggZmllbGQgKEJBU0lDLCBQUkVRLCBURExTKSwKaWVl ZTgwMjExX21sZV9zaXplX29rKCkgY2hlY2tzIHRoYXQgdmFyaWFibGVbMF0gaXMgYXQgbGVhc3Qg YXMgbGFyZ2UgYXMKdGhlIG1hbmRhdG9yeSBmaWVsZHMsIGJ1dCBpdCBkb2VzIG5vdCBjaGVjayB0 aGF0IHRoZSB2YWx1ZSBmaXRzIHdpdGhpbgp0aGUgZWxlbWVudCBpdHNlbGYuCgpjZmc4MDIxMV9k ZWZyYWdfbWxlKCkgY29tcHV0ZXMgdGhlIHN1Yi1lbGVtZW50IGFyZWEgc3RhcnQgYXM6CgogICAg Y29tbW9uX3NpemUgPSBpZWVlODAyMTFfbWxlX2NvbW1vbl9zaXplKCh1OCAqKXJlcy0+bWxlKTsK ICAgIGllID0gcmVzLT5kYXRhICsgY29tbW9uX3NpemU7CiAgICBpZWxlbiA9IG1sZV9sZW4gLSBj b21tb25fc2l6ZTsKCmllZWU4MDIxMV9tbGVfY29tbW9uX3NpemUoKSByZXR1cm5zIHNpemVvZigq bWxlKSArIG1sZS0+dmFyaWFibGVbMF0uCklmIHZhcmlhYmxlWzBdIGlzIGxhcmdlciB0aGFuIHRo ZSBhY3R1YWwgZWxlbWVudCwgY29tbW9uX3NpemUgZXhjZWVkcwptbGVfbGVuIGFuZCB0aGUgc2l6 ZV90IHN1YnRyYWN0aW9uIHdyYXBzLiBmb3JfZWFjaF9lbGVtZW50X2lkKCkgdGhlbgppdGVyYXRl cyBvdmVyIGFyYml0cmFyeSBrZXJuZWwgaGVhcCBtZW1vcnkgcGFzdCB0aGUgYWxsb2NhdGlvbi4K CkFkZCB0aGUgbWlzc2luZyB1cHBlci1ib3VuZCBjaGVjayBzbyB2YXJpYWJsZVswXSBjYW5ub3Qg ZXhjZWVkIHRoZQplbGVtZW50IHNpemUuCgpTaWduZWQtb2ZmLWJ5OiBBbGV4YW5kcnUgSG9zc3Ug PGhvc3N1LmFsZXhhbmRydUBnbWFpbC5jb20+Ci0tLQogaW5jbHVkZS9saW51eC9pZWVlODAyMTEt ZWh0LmggfCA0ICsrKysKIDEgZmlsZSBjaGFuZ2VkLCA0IGluc2VydGlvbnMoKykKCmRpZmYgLS1n aXQgYS9pbmNsdWRlL2xpbnV4L2llZWU4MDIxMS1laHQuaCBiL2luY2x1ZGUvbGludXgvaWVlZTgw MjExLWVodC5oCmluZGV4IDg3ZDkyZmI4NmZhYi4uNzM4YTU4MWMzNjgzIDEwMDY0NAotLS0gYS9p bmNsdWRlL2xpbnV4L2llZWU4MDIxMS1laHQuaAorKysgYi9pbmNsdWRlL2xpbnV4L2llZWU4MDIx MS1laHQuaApAQCAtOTA4LDYgKzkwOCwxMCBAQCBzdGF0aWMgaW5saW5lIGJvb2wgaWVlZTgwMjEx X21sZV9zaXplX29rKGNvbnN0IHU4ICpkYXRhLCBzaXplX3QgbGVuKQogCWlmICghY2hlY2tfY29t bW9uX2xlbikKIAkJcmV0dXJuIHRydWU7CgorCS8qIGNvbW1vbl9pbmZvIGxlbmd0aCBtdXN0IG5v dCBleGNlZWQgdGhlIGVsZW1lbnQgKi8KKwlpZiAobGVuIDwgZml4ZWQgKyBtbGUtPnZhcmlhYmxl WzBdKQorCQlyZXR1cm4gZmFsc2U7CisKIAkvKiBpZiBwcmVzZW50LCBjb21tb24gbGVuZ3RoIGlz IHRoZSBmaXJzdCBvY3RldCB0aGVyZSAqLwogCXJldHVybiBtbGUtPnZhcmlhYmxlWzBdID49IGNv bW1vbjsKIH0K