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Hallyn" , Fan Wu , Stephen Smalley , Ondrej Mosnacek , open list , "open list:MODULE SUPPORT" , "open list:SECURITY SUBSYSTEM" , "open list:SELINUX SECURITY MODULE" In-Reply-To: <20251119140326.787451-1-coxu@redhat.com> References: <20251031074016.1975356-1-coxu@redhat.com> <20251119140326.787451-1-coxu@redhat.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Date: Wed, 19 Nov 2025 10:29:15 -0500 Precedence: bulk X-Mailing-List: selinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Evolution 3.54.3 (3.54.3-2.fc41) X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=C/nkCAP+ c=1 sm=1 tr=0 ts=691de24f cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=sWKEhP36mHoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=20KFwNOVAAAA:8 a=VnNF1IyMAAAA:8 a=xVhDTqbCAAAA:8 a=TJo3RIopB0RH3hlNab8A:9 a=QEXdDO2ut3YA:10 a=GrmWmAYt4dzCMttCBZOh:22 X-Proofpoint-GUID: 1Aacmr1lel3MWLuiEaRqdV5WAhY95P6C X-Proofpoint-ORIG-GUID: Tz2BsdnjY_28B6-MXgTzcSUCq8Xp729G X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTE1MDAzMiBTYWx0ZWRfXxUozr5/BEu6D 4uHt7aRLp8Nr9REH58s1B1cvJZVsinX18ju3wwKTsH8afes+ylqDPCqNauHUndTJx0TvOCD2riw EXn4AY1in877S5dsXJKP7ApNL7FqhmFzm6gEVPJ6VgFQ8lfyihpLgZAfi1JipH0sKtKYkoxfO7E +8pHXaA4dYB6yo9UuMiQeCDUWBmqHVp4zTertDYAfuM29BQBSxX8z36DhiJZNUFh5nYdFGiFduk cEqcC8mj9PteL/I5up2CjYzb7s0zCIjc0diLqLxgjovhan9mhdoAsAulr1ay7AWcNFORhUB+qg2 XDf54QGV9AY3G/uhztJlSCMYv6y27tuNNGkIcutS4DLiQTUds2nzKK0pODoQKtkPqpmdNNOZ1b1 cb+yrg+dIOZXnknFoipTYEYhnqwsVw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-19_04,2025-11-18_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 spamscore=0 impostorscore=0 bulkscore=0 malwarescore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511150032 On Wed, 2025-11-19 at 22:03 +0800, Coiby Xu wrote: > Currently, when in-kernel module decompression (CONFIG_MODULE_DECOMPRESS) > is enabled, IMA has no way to verify the appended module signature as it > can't decompress the module. >=20 > Define a new kernel_read_file_id enumerate READING_MODULE_COMPRESSED so > IMA can calculate the compressed kernel module data hash on > READING_MODULE_COMPRESSED and defer appraising/measuring it until on > READING_MODULE when the module has been decompressed. >=20 > Before enabling in-kernel module decompression, a kernel module in > initramfs can still be loaded with ima_policy=3Dsecure_boot. So adjust th= e > kernel module rule in secure_boot policy to allow either an IMA > signature OR an appended signature i.e. to use > "appraise func=3DMODULE_CHECK appraise_type=3Dimasig|modsig". >=20 > Reported-by: Karel Srot > Suggested-by: Mimi Zohar > Suggested-by: Paul Moore > Signed-off-by: Coiby Xu Thanks, Coiby! The patch is now queued in next-integrity. --=20 Mimi