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  <DocumentTitle xml:lang="en">Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP2)</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
  <DocumentPublisher Type="Vendor">
    <ContactDetails>security@suse.de</ContactDetails>
    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
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    <Identification>
      <ID>SUSE-SU-2021:0367-1</ID>
    </Identification>
    <Status>Final</Status>
    <Version>1</Version>
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        <Number>1</Number>
        <Date>2021-02-10T10:42:30Z</Date>
        <Description>current</Description>
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  <DocumentNotes>
    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP2)</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">This update for the Linux Kernel 5.3.18-22 fixes several issues.

The following security issues were fixed:

- CVE-2020-29373: Fixed an issue where kernel unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations (bsc#1179779).
- CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180562).
- CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180030).
- CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180032. 
- CVE-2020-29569: Fixed a use after free due to a logic error (bsc#1180008).
- CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bsc#1179877).
- CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179877).
- CVE-2020-29368: Fixed an issue in copy-on-write implementation which could grant unintended write access because of a race condition in a THP mapcount check (bsc#1179664).
</Note>
    <Note Title="Terms of Use" Type="Legal Disclaimer" Ordinal="3" xml:lang="en">The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).</Note>
    <Note Title="Patchnames" Type="Details" Ordinal="4" xml:lang="en">SUSE-2021-367,SUSE-SLE-Module-Live-Patching-15-SP2-2021-365,SUSE-SLE-Module-Live-Patching-15-SP2-2021-366,SUSE-SLE-Module-Live-Patching-15-SP2-2021-367,SUSE-SLE-Module-Live-Patching-15-SP2-2021-368</Note>
  </DocumentNotes>
  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
  <DocumentReferences>
    <Reference Type="Self">
      <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
      <Description>Link for SUSE-SU-2021:0367-1</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://lists.suse.com/pipermail/sle-security-updates/2021-February/008296.html</URL>
      <Description>E-Mail link for SUSE-SU-2021:0367-1</Description>
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    <Reference Type="Self">
      <URL>https://www.suse.com/support/security/rating/</URL>
      <Description>SUSE Security Ratings</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1179664</URL>
      <Description>SUSE Bug 1179664</Description>
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      <URL>https://bugzilla.suse.com/1179779</URL>
      <Description>SUSE Bug 1179779</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1179877</URL>
      <Description>SUSE Bug 1179877</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1180008</URL>
      <Description>SUSE Bug 1180008</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1180030</URL>
      <Description>SUSE Bug 1180030</Description>
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      <URL>https://bugzilla.suse.com/1180032</URL>
      <Description>SUSE Bug 1180032</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1180562</URL>
      <Description>SUSE Bug 1180562</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2020-0465/</URL>
      <Description>SUSE CVE CVE-2020-0465 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2020-0466/</URL>
      <Description>SUSE CVE CVE-2020-0466 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2020-29368/</URL>
      <Description>SUSE CVE CVE-2020-29368 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2020-29373/</URL>
      <Description>SUSE CVE CVE-2020-29373 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2020-29569/</URL>
      <Description>SUSE CVE CVE-2020-29569 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2020-29660/</URL>
      <Description>SUSE CVE CVE-2020-29660 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2020-29661/</URL>
      <Description>SUSE CVE CVE-2020-29661 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2020-36158/</URL>
      <Description>SUSE CVE CVE-2020-36158 page</Description>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In various methods of hid-multitouch.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-162844689References: Upstream kernel</Note>
    </Notes>
    <CVE>CVE-2020-0465</CVE>
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      <ScoreSetV3>
        <BaseScoreV3>8.4</BaseScoreV3>
        <VectorV3>CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
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    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
      </Remediation>
    </Remediations>
    <References>
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        <URL>https://www.suse.com/security/cve/CVE-2020-0465.html</URL>
        <Description>CVE-2020-0465</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/1180029</URL>
        <Description>SUSE Bug 1180029</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/1180030</URL>
        <Description>SUSE Bug 1180030</Description>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-147802478References: Upstream kernel</Note>
    </Notes>
    <CVE>CVE-2020-0466</CVE>
    <ProductStatuses>
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        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-22-default-7-5.2</ProductID>
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        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_15-default-5-2.1</ProductID>
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        <Description>important</Description>
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        <VectorV2>AV:L/AC:L/Au:N/C:C/I:C/A:C</VectorV2>
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        <VectorV3>CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</VectorV3>
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        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
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        <Description>CVE-2020-0466</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/1180031</URL>
        <Description>SUSE Bug 1180031</Description>
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        <Description>SUSE Bug 1180032</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/1199255</URL>
        <Description>SUSE Bug 1199255</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1200084</URL>
        <Description>SUSE Bug 1200084</Description>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.</Note>
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    <CVE>CVE-2020-29368</CVE>
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        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_15-default-5-2.1</ProductID>
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        <Description>moderate</Description>
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        <VectorV2>AV:L/AC:M/Au:N/C:C/I:C/A:C</VectorV2>
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</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
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        <Description>CVE-2020-29368</Description>
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        <Description>SUSE Bug 1179428</Description>
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        <Description>SUSE Bug 1179660</Description>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations, aka CID-ff002b30181d.</Note>
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        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_15-default-5-2.1</ProductID>
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        <VectorV3>CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N</VectorV3>
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        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
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        <Description>CVE-2020-29373</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/1179434</URL>
        <Description>SUSE Bug 1179434</Description>
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      <Reference>
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        <Description>SUSE Bug 1179779</Description>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring-&gt;xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback.</Note>
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    <CVE>CVE-2020-29569</CVE>
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        <Description>important</Description>
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      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>8.8</BaseScoreV3>
        <VectorV3>CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2020-29569.html</URL>
        <Description>CVE-2020-29569</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1179509</URL>
        <Description>SUSE Bug 1179509</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1180008</URL>
        <Description>SUSE Bug 1180008</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="6">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.</Note>
    </Notes>
    <CVE>CVE-2020-29660</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-22-default-7-5.2</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_12-default-5-2.1</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_15-default-5-2.1</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_9-default-6-2.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>2.1</BaseScoreV2>
        <VectorV2>AV:L/AC:L/Au:N/C:P/I:N/A:N</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>7.4</BaseScoreV3>
        <VectorV3>CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2020-29660.html</URL>
        <Description>CVE-2020-29660</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1179745</URL>
        <Description>SUSE Bug 1179745</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1179877</URL>
        <Description>SUSE Bug 1179877</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="7">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.</Note>
    </Notes>
    <CVE>CVE-2020-29661</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-22-default-7-5.2</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_12-default-5-2.1</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_15-default-5-2.1</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_9-default-6-2.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.2</BaseScoreV2>
        <VectorV2>AV:L/AC:L/Au:N/C:C/I:C/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>7.4</BaseScoreV3>
        <VectorV3>CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2020-29661.html</URL>
        <Description>CVE-2020-29661</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1179745</URL>
        <Description>SUSE Bug 1179745</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1179877</URL>
        <Description>SUSE Bug 1179877</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1214268</URL>
        <Description>SUSE Bug 1214268</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1218966</URL>
        <Description>SUSE Bug 1218966</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="8">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.</Note>
    </Notes>
    <CVE>CVE-2020-36158</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-22-default-7-5.2</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_12-default-5-2.1</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_15-default-5-2.1</ProductID>
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_9-default-6-2.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.2</BaseScoreV2>
        <VectorV2>AV:L/AC:L/Au:N/C:C/I:C/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>8.8</BaseScoreV3>
        <VectorV3>CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2020-36158.html</URL>
        <Description>CVE-2020-36158</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1180559</URL>
        <Description>SUSE Bug 1180559</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1180562</URL>
        <Description>SUSE Bug 1180562</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
</cvrfdoc>
