From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: [PATCH] xen/build-id: Fix xen_build_id_check() to be robust against malformed notes Date: Mon, 31 Dec 2018 17:34:25 +0000 Message-ID: <1546277665-32720-1-git-send-email-andrew.cooper3@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Xen-devel Cc: Stefano Stabellini , Wei Liu , Andrew Cooper , Julien Grall , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= List-Id: xen-devel@lists.xenproject.org QSBOVF9HTlVfQlVJTERfSUQgd2l0aCBuYW1lc3ogbG9uZ2VyIHRoYW4gNCB3aWxsIGNhdXNlIHRo ZSBzdHJuY21wKCkgdG8gdXNlCmJ5dGVzIGluIGFkamFjZW50IHN0cmluZ3RhYmxlIGVudHJpZXMu CgpJbnN0ZWFkLCBjaGVjayBmb3IgbmFtZXN6IGV4YWN0bHkgZXF1YWwgdG8gNCwgYW5kIHVzZSBt ZW1jbXAoKSB3aXRoIGFuCmV4cGxpY2l0IHNpemUuCgpTaWduZWQtb2ZmLWJ5OiBBbmRyZXcgQ29v cGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPgotLS0KQ0M6IEphbiBCZXVsaWNoIDxKQmV1 bGljaEBzdXNlLmNvbT4KQ0M6IFdlaSBMaXUgPHdlaS5saXUyQGNpdHJpeC5jb20+CkNDOiBSb2dl ciBQYXUgTW9ubsOpIDxyb2dlci5wYXVAY2l0cml4LmNvbT4KQ0M6IFN0ZWZhbm8gU3RhYmVsbGlu aSA8c3N0YWJlbGxpbmlAa2VybmVsLm9yZz4KQ0M6IEp1bGllbiBHcmFsbCA8anVsaWVuLmdyYWxs QGFybS5jb20+CgpOb3RpY2VkIHdoaWxlIGF1ZGl0aW5nIFhlbidzIHVzZSBvZiBzdHJuY21wKCkg Zm9yIHRoZSBjb21tYW5kIGxpbmUgcGF0Y2guCi0tLQogeGVuL2NvbW1vbi92ZXJzaW9uLmMgfCA2 ICsrKy0tLQogMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMoLSkK CmRpZmYgLS1naXQgYS94ZW4vY29tbW9uL3ZlcnNpb24uYyBiL3hlbi9jb21tb24vdmVyc2lvbi5j CmluZGV4IDIyM2NiNTIuLjFkZjdlNzggMTAwNjQ0Ci0tLSBhL3hlbi9jb21tb24vdmVyc2lvbi5j CisrKyBiL3hlbi9jb21tb24vdmVyc2lvbi5jCkBAIC05NywxNyArOTcsMTcgQEAgaW50IHhlbl9i dWlsZF9pZF9jaGVjayhjb25zdCBFbGZfTm90ZSAqbiwgdW5zaWduZWQgaW50IG5fc3osCiAgICAg aWYgKCBOVF9HTlVfQlVJTERfSUQgIT0gbi0+dHlwZSApCiAgICAgICAgIHJldHVybiAtRU5PREFU QTsKIAotICAgIGlmICggbi0+bmFtZXN6ICsgbi0+ZGVzY3N6IDwgbi0+bmFtZXN6ICkKKyAgICBp ZiAoIG4tPm5hbWVzeiAhPSA0IC8qIEdOVVwwICovKQogICAgICAgICByZXR1cm4gLUVJTlZBTDsK IAotICAgIGlmICggbi0+bmFtZXN6IDwgNCAvKiBHTlVcMCAqLykKKyAgICBpZiAoIG4tPm5hbWVz eiArIG4tPmRlc2NzeiA8IG4tPm5hbWVzeiApCiAgICAgICAgIHJldHVybiAtRUlOVkFMOwogCiAg ICAgaWYgKCBuLT5uYW1lc3ogKyBuLT5kZXNjc3ogPiBuX3N6IC0gc2l6ZW9mKCpuKSApCiAgICAg ICAgIHJldHVybiAtRUlOVkFMOwogCiAgICAgLyogU2FuaXR5IGNoZWNrLCBuYW1lIHNob3VsZCBi ZSAiR05VIiBmb3IgbGQtZ2VuZXJhdGVkIGJ1aWxkLWlkLiAqLwotICAgIGlmICggc3RybmNtcChF TEZOT1RFX05BTUUobiksICJHTlUiLCBuLT5uYW1lc3opICE9IDAgKQorICAgIGlmICggbWVtY21w KEVMRk5PVEVfTkFNRShuKSwgIkdOVSIsIDQpICE9IDAgKQogICAgICAgICByZXR1cm4gLUVOT0RB VEE7CiAKICAgICBpZiAoIGxlbiApCi0tIAoyLjEuNAoKCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVs QGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1h bi9saXN0aW5mby94ZW4tZGV2ZWw=