CVE-2022-50280

mediumPriorität · verfolgen · 22EPSS 0.002 · 5. PerzentilDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.16% (5th) EPSS
CVSS 5.5 · medium
Is it mine?
73 products
Prüfe deine Angriffsfläche
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · bewertet 2026-10-27

In the Linux kernel, the following vulnerability has been resolved: pnode: terminate at peers of source The propagate_mnt() function handles mount propagation when creating mounts and propagates the source mount tree @source_mnt to all applicable nodes of the destination propagation mount tree headed by @dest_mnt. Unfortunately it contains a bug where it fails to terminate at peers of @source_mnt when looking up copies of the source mount that become masters for copies of the source mount tree mounted on top of slaves in the destination propagation tree causing a NULL dereference. Once the mechanics of the bug are understood it's easy to trigger. Because of unprivileged user namespaces it is available to unprivileged users. While fixing this bug we've gotten confused multiple times due to unclear terminology or missing concepts. So let's start this with some clarifications: * The terms "master" or "peer" denote a shared mount. A shared mount belongs to a peer group. * A peer group is a set of shared mounts that propagate to each other. They are identified by a peer group id. The peer group id is available in @shared_mnt->mnt_group_id. Shared mounts within the same peer group have the same peer group id. The peers in a peer group can be reached via @shared_mnt->mnt_share. * The terms "slave mount" or "dependent mount" denote a mount that receives propagation from a peer in a peer group. IOW, shared mounts may have slave mounts and slave mounts have shared mounts as their master. Slave mounts of a given peer in a peer group are listed on that peers slave list available at @shared_mnt->mnt_slave_list. * The term "master mount" denotes a mount in a peer group. IOW, it denotes a shared mount or a peer mount in a peer group. The term "master mount" - or "master" for short - is mostly used when talking in the context of slave mounts that receive propagation from a master mount. A master mount of a slave identifies the closest peer group a slave mount receives propagation from. The master mount of a slave can be identified via @slave_mount->mnt_master. Different slaves may point to different masters in the same peer group. * Multiple peers in a peer group can have non-empty ->mnt_slave_lists. Non-empty ->mnt_slave_lists of peers don't intersect. Consequently, to ensure all slave mounts of a peer group are visited the ->mnt_slave_lists of all peers in a peer group have to be walked. * Slave mounts point to a peer in the closest peer group they receive propagation from via @slave_mnt->mnt_master (see above). Together with these peers they form a propagation group (see below). The closest peer group can thus be identified through the peer group id @slave_mnt->mnt_master->mnt_group_id of the peer/master that a slave mount receives propagation from. * A shared-slave mount is a slave mount to a peer group pg1 while also a peer in another peer group pg2. IOW, a peer group may receive propagation from another peer group. If a peer group pg1 is a slave to another peer group pg2 then all peers in peer group pg1 point to the same peer in peer group pg2 via ->mnt_master. IOW, all peers in peer group pg1 appear on the same ->mnt_slave_list. IOW, they cannot be slaves to different peer groups. * A pure slave mount is a slave mount that is a slave to a peer group but is not a peer in another peer group. * A propagation group denotes the set of mounts consisting of a single peer group pg1 and all slave mounts and shared-slave mounts that point to a peer in that peer group via ->mnt_master. IOW, all slave mounts such that @slave_mnt->mnt_master->mnt_group_id is equal to @shared_mnt->mnt_group_id. The concept of a propagation group makes it easier to talk about a single propagation level in a propagation tree. For example, in propagate_mnt() the immediate peers of @dest_mnt and all slaves of @dest_mnt's peer group form a propagation group pr ---truncated---

01

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    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.ppc64le as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.s390x as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-obs-build-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-0:5.14.21-150400.24.187.3.noarch as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-0:5.14.21-150400.24.187.3.noarch as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-0:5.14.21-150400.24.187.3.noarch as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-0:5.14.21-150400.24.187.3.noarch as component of SUSE Manager Proxy LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-0:5.14.21-150400.24.187.3.noarch as component of SUSE Manager Server LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.aarch64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.aarch64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.aarch64 as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.ppc64le as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.ppc64le as component of SUSE Manager Server LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.s390x as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.s390x as component of SUSE Manager Server LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.x86_64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.x86_64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.x86_64 as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.x86_64 as component of SUSE Manager Proxy LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-syms-0:5.14.21-150400.24.187.1.x86_64 as component of SUSE Manager Server LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-zfcpdump-0:5.14.21-150400.24.187.3.s390x as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-zfcpdump-0:5.14.21-150400.24.187.3.s390x as component of SUSE Manager Server LTS 4.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenocfs2-kmp-default-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise High Availability Extension 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenocfs2-kmp-default-0:5.14.21-150400.24.187.3.ppc64le as component of SUSE Linux Enterprise High Availability Extension 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenocfs2-kmp-default-0:5.14.21-150400.24.187.3.s390x as component of SUSE Linux Enterprise High Availability Extension 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenocfs2-kmp-default-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise High Availability Extension 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.aarch64 as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.ppc64le as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.s390x as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenreiserfs-kmp-default-0:5.14.21-150400.24.187.3.x86_64 as component of SUSE Linux Enterprise Server 15 SP4-LTSSsuse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-rt-0:5.3.18-150300.229.2.x86_64 as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-rt-0:5.3.18-150300.229.1.noarch as component of SUSE Linux Enterprise Micro 5.2suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-rt-0:5.14.21-150400.15.139.2.x86_64 as component of SUSE Linux Enterprise Micro 5.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-rt-0:5.14.21-150400.15.139.2.x86_64 as component of SUSE Linux Enterprise Micro 5.4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-rt-0:5.14.21-150400.15.139.1.noarch as component of SUSE Linux Enterprise Micro 5.3suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-rt-0:5.14.21-150400.15.139.1.noarch as component of SUSE Linux Enterprise Micro 5.4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-devel-rt-0:5.14.21-150500.13.115.1.noarch as component of SUSE Linux Enterprise Micro 5.5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-rt-0:5.14.21-150500.13.115.2.x86_64 as component of SUSE Linux Enterprise Micro 5.5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-source-rt-0:5.14.21-150500.13.115.1.noarch as component of SUSE Linux Enterprise Micro 5.5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.0
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.1–7

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 1.8 · Auswirkung 3.6
v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · SUSE Product Security
03

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

04

betroffene Produkte (73)

Betroffene Produkte und Versionsbereiche.

20 von 73 angezeigt
05

Advisories (6)

Hersteller- und Ökosystem-Meldungen dazu.

06

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

07

quellen

Welche Quellen diesen Datensatz belegen und wann.

veröffentlicht 2025-09-15geändert 2026-06-17
09

Referenzen (28)

Externe Belege — Patches, Meldungen, Analysen.

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