ELSA-2026-93461

ELSA-2026-93461 - util-linux security update

Type:	SECURITY
Impact:	IMPORTANT
Release Date:	2026-11-02

Description

[2.40.2-18.0.1.el10_2.20]
- fix -d -t output regression [OLDIS-51984]

[2.40.2-20]
- libblkid: validate EBR data [CVE-2026-53615]

[2.40.2-19]
- libmount and blkid security fixes
- libblkid: fix use-after-free in nested partition probing [CVE-2026-13595]
- nsenter: close cgroup.procs fd after join to prevent authority leak
[CVE-2026-78408]
- libmount: fix SUID bypass via LIBMOUNT_FORCE_MOUNT2 and legacy mount
[CVE-2026-53614]
- libmount: TOCTOU in the mount program via ancestor directory swap on
target path [CVE-2026-53613]
- libmount: TOCTOU in the mount program when applying post-mount
ownership/mode changes [CVE-2026-53612]
- libmount: restrict the mount source for non-root users [CVE-2026-78410]
- libmount: skip post-mount hooks after a failed mount helper
[CVE-2026-76642]
- loopdev: do not follow symlinks for the backing file [CVE-2026-27456]

Related CVEs

CVE-2026-13595

CVE-2026-27456

CVE-2026-53612

CVE-2026-53613

CVE-2026-53614

CVE-2026-53615

CVE-2026-76642

CVE-2026-78408

CVE-2026-78410

Updated Packages

Release/Architecture	Filename	sha256	Superseded By Advisory	Channel Label
Oracle Linux 10 (aarch64)	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_aarch64_appstream
	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_aarch64_baseos_latest
	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_aarch64_codeready_builder
	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_aarch64_u2_baseos_patch
	libblkid-2.40.2-18.0.1.el10_2.20.aarch64.rpm	0a4877fbca6c55e3bf13dedc5de8afd76744de5a17dbeb931ce9830196cefcba	-	ol10_aarch64_baseos_latest
	libblkid-2.40.2-18.0.1.el10_2.20.aarch64.rpm	0a4877fbca6c55e3bf13dedc5de8afd76744de5a17dbeb931ce9830196cefcba	-	ol10_aarch64_u2_baseos_patch
	libblkid-devel-2.40.2-18.0.1.el10_2.20.aarch64.rpm	b6f2fd113e05bd47420bb0a742695fc15f29ead7c01acafb8306958eff047521	-	ol10_aarch64_appstream
	libfdisk-2.40.2-18.0.1.el10_2.20.aarch64.rpm	60cc19eac3b644f7f77a62295551a567e0cc9a4b101afb73fd2dad409fa9f914	-	ol10_aarch64_baseos_latest
	libfdisk-2.40.2-18.0.1.el10_2.20.aarch64.rpm	60cc19eac3b644f7f77a62295551a567e0cc9a4b101afb73fd2dad409fa9f914	-	ol10_aarch64_u2_baseos_patch
	libfdisk-devel-2.40.2-18.0.1.el10_2.20.aarch64.rpm	ef2159ba8f6db1d8f19ac58216d8e3b33b7e9c6dd40d31bc24498e042e21ab89	-	ol10_aarch64_codeready_builder
	libmount-2.40.2-18.0.1.el10_2.20.aarch64.rpm	155426f2332fbc83e1fa7a97133cc9c62a89f9b898a2a5917eb88143caf44eb6	-	ol10_aarch64_baseos_latest
	libmount-2.40.2-18.0.1.el10_2.20.aarch64.rpm	155426f2332fbc83e1fa7a97133cc9c62a89f9b898a2a5917eb88143caf44eb6	-	ol10_aarch64_u2_baseos_patch
	libmount-devel-2.40.2-18.0.1.el10_2.20.aarch64.rpm	210ee25a1a9f42879d395b7b7498acfeaf0374503ee332d835ea2496679949c7	-	ol10_aarch64_appstream
	libsmartcols-2.40.2-18.0.1.el10_2.20.aarch64.rpm	7f55122714998c8d92dad4d9bf7e55ba894d1d3bd27b1faa477e9ec14051c1ab	-	ol10_aarch64_baseos_latest
	libsmartcols-2.40.2-18.0.1.el10_2.20.aarch64.rpm	7f55122714998c8d92dad4d9bf7e55ba894d1d3bd27b1faa477e9ec14051c1ab	-	ol10_aarch64_u2_baseos_patch
	libsmartcols-devel-2.40.2-18.0.1.el10_2.20.aarch64.rpm	0b08962a24ad14b410ae724565741dc4430d7fc94874d371c0978b7de3165b0d	-	ol10_aarch64_codeready_builder
	libuuid-2.40.2-18.0.1.el10_2.20.aarch64.rpm	61bdc2e35cbb69bbed6d8cd3b125dbaeb60099b638c398eab365006190bdd10e	-	ol10_aarch64_baseos_latest
	libuuid-2.40.2-18.0.1.el10_2.20.aarch64.rpm	61bdc2e35cbb69bbed6d8cd3b125dbaeb60099b638c398eab365006190bdd10e	-	ol10_aarch64_u2_baseos_patch
	libuuid-devel-2.40.2-18.0.1.el10_2.20.aarch64.rpm	c4deda36b854035a0edf19003fef1f760fe6413884ef776e3eae893254cc12d9	-	ol10_aarch64_appstream
	python3-libmount-2.40.2-18.0.1.el10_2.20.aarch64.rpm	0e7887f5b4f26743661f48a001bc448f909b487287778893f59e64a29c6469f6	-	ol10_aarch64_appstream
	util-linux-2.40.2-18.0.1.el10_2.20.aarch64.rpm	7b13d80aa3acae9ce8297839327340b8cee6d229c0523cb263a0cc0b72537fb9	-	ol10_aarch64_baseos_latest
	util-linux-2.40.2-18.0.1.el10_2.20.aarch64.rpm	7b13d80aa3acae9ce8297839327340b8cee6d229c0523cb263a0cc0b72537fb9	-	ol10_aarch64_u2_baseos_patch
	util-linux-core-2.40.2-18.0.1.el10_2.20.aarch64.rpm	cb3ac4c9d29611492e9e87f930ad339a0689853a27db4ea01ecf5880dcd3d371	-	ol10_aarch64_baseos_latest
	util-linux-core-2.40.2-18.0.1.el10_2.20.aarch64.rpm	cb3ac4c9d29611492e9e87f930ad339a0689853a27db4ea01ecf5880dcd3d371	-	ol10_aarch64_u2_baseos_patch
	uuidd-2.40.2-18.0.1.el10_2.20.aarch64.rpm	fa3da53a472715612edbbd2adf7c9b67daee16437e428f8593b57fd743b0b1b6	-	ol10_aarch64_appstream
Oracle Linux 10 (x86_64)	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_x86_64_appstream
	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_x86_64_baseos_latest
	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_x86_64_codeready_builder
	util-linux-2.40.2-18.0.1.el10_2.20.src.rpm	428cf7b9f0e9421a25d0298e5c2923e6bcfe615040aa6ec4ad01d0fbc51c21b1	-	ol10_x86_64_u2_baseos_patch
	libblkid-2.40.2-18.0.1.el10_2.20.x86_64.rpm	116b9103c818785a25414179b1b5514e5d32978bba4375084582af73bdce0349	-	ol10_x86_64_baseos_latest
	libblkid-2.40.2-18.0.1.el10_2.20.x86_64.rpm	116b9103c818785a25414179b1b5514e5d32978bba4375084582af73bdce0349	-	ol10_x86_64_u2_baseos_patch
	libblkid-devel-2.40.2-18.0.1.el10_2.20.x86_64.rpm	1ba3774013a3726cad7553fa5a4db349ca5cf3490d4d899e674fd6e3baa7277e	-	ol10_x86_64_appstream
	libfdisk-2.40.2-18.0.1.el10_2.20.x86_64.rpm	3bbd4677bc56569da9f97b22453b16ae053b1f028b3461dea9c7a9c63d78064d	-	ol10_x86_64_baseos_latest
	libfdisk-2.40.2-18.0.1.el10_2.20.x86_64.rpm	3bbd4677bc56569da9f97b22453b16ae053b1f028b3461dea9c7a9c63d78064d	-	ol10_x86_64_u2_baseos_patch
	libfdisk-devel-2.40.2-18.0.1.el10_2.20.x86_64.rpm	78bbf4db2f59efecb02d8d6b3a96e8ea157668ece61dfe8ec99412c4b0ad620a	-	ol10_x86_64_codeready_builder
	libmount-2.40.2-18.0.1.el10_2.20.x86_64.rpm	a1e071bac6ba920c2a1812a510f62970c6435c323cc0caea928fb04e0514408e	-	ol10_x86_64_baseos_latest
	libmount-2.40.2-18.0.1.el10_2.20.x86_64.rpm	a1e071bac6ba920c2a1812a510f62970c6435c323cc0caea928fb04e0514408e	-	ol10_x86_64_u2_baseos_patch
	libmount-devel-2.40.2-18.0.1.el10_2.20.x86_64.rpm	bc12ddc43ef8bba06b35ad18a822c5145f13d5f051188655a475d0984cd9034f	-	ol10_x86_64_appstream
	libsmartcols-2.40.2-18.0.1.el10_2.20.x86_64.rpm	efdbea7fdedc344c25799b12b6c7166b9b48044dba574af349166fd247b23f38	-	ol10_x86_64_baseos_latest
	libsmartcols-2.40.2-18.0.1.el10_2.20.x86_64.rpm	efdbea7fdedc344c25799b12b6c7166b9b48044dba574af349166fd247b23f38	-	ol10_x86_64_u2_baseos_patch
	libsmartcols-devel-2.40.2-18.0.1.el10_2.20.x86_64.rpm	31ee50f7bddf4133f8bdb4f9f94d8d432e573c2988ca966641814feaa8f82dd2	-	ol10_x86_64_codeready_builder
	libuuid-2.40.2-18.0.1.el10_2.20.x86_64.rpm	09f38a8b93f428de42e530d9e3eca9cfb34c3db3af5a9ad531b1dd4008d258b4	-	ol10_x86_64_baseos_latest
	libuuid-2.40.2-18.0.1.el10_2.20.x86_64.rpm	09f38a8b93f428de42e530d9e3eca9cfb34c3db3af5a9ad531b1dd4008d258b4	-	ol10_x86_64_u2_baseos_patch
	libuuid-devel-2.40.2-18.0.1.el10_2.20.x86_64.rpm	2ee96941f7dad8bed4e94f07ac88e15a08d65b854787313dc3b3d7546ea1a882	-	ol10_x86_64_appstream
	python3-libmount-2.40.2-18.0.1.el10_2.20.x86_64.rpm	5f92d43570b1565f10a3627f1d3f65e5cc0c16bfdb5b225a3b4271d02ed2af26	-	ol10_x86_64_appstream
	util-linux-2.40.2-18.0.1.el10_2.20.x86_64.rpm	e91d540fa48e8a21ad7475c3935c5f2f7c223b2079d68c5f61517bb4ffb41e26	-	ol10_x86_64_baseos_latest
	util-linux-2.40.2-18.0.1.el10_2.20.x86_64.rpm	e91d540fa48e8a21ad7475c3935c5f2f7c223b2079d68c5f61517bb4ffb41e26	-	ol10_x86_64_u2_baseos_patch
	util-linux-core-2.40.2-18.0.1.el10_2.20.x86_64.rpm	0294b6ac926aeed5d4e52df8f8e38810c888a4bbfb4e3db5105d3dfb8279bdd5	-	ol10_x86_64_baseos_latest
	util-linux-core-2.40.2-18.0.1.el10_2.20.x86_64.rpm	0294b6ac926aeed5d4e52df8f8e38810c888a4bbfb4e3db5105d3dfb8279bdd5	-	ol10_x86_64_u2_baseos_patch
	uuidd-2.40.2-18.0.1.el10_2.20.x86_64.rpm	6b006cf5ead1a331133a5de5c9110bfa914cb32287b585e1148303356b2f0701	-	ol10_x86_64_appstream

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