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  <DocumentTitle xml:lang="en">Security update for the Linux Kernel</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
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    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
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    <Identification>
      <ID>SUSE-SU-2021:2409-1</ID>
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    <Status>Final</Status>
    <Version>1</Version>
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        <Date>2021-07-20T12:40:51Z</Date>
        <Description>current</Description>
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    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for the Linux Kernel</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">
The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

- CVE-2021-22555: A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c (bnc#1188116 ).
- CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to obtain full root privileges (bsc#1188062).

The following non-security bugs were fixed:

- ceph: must hold snap_rwsem when filling inode for async create (bsc#1187927).
- cgroup1: do not allow '\n' in renaming (bsc#1187972).
- qla2xxx: synchronize rport dev_loss_tmo setting (bsc#1182470 bsc#1185486).
- scsi: ufs: ufshcd-pltfrm depends on HAS_IOMEM (bsc#1187980).
- usb: dwc3: Fix debugfs creation flow (git-fixes).
- x86/pkru: Write hardware init value to PKRU when xstate is init (bsc#1152489).
- x86/process: Check PF_KTHREAD and not current-&gt;mm for kernel threads (bsc#1152489).
</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">Image SLES15-SP3-HPC-Azure-2021-2409,SUSE-2021-2409,SUSE-SLE-Module-Public-Cloud-15-SP3-2021-2409</Note>
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  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
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      <URL>https://www.suse.com/support/update/announcement/2021/suse-su-20212409-1/</URL>
      <Description>Link for SUSE-SU-2021:2409-1</Description>
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      <URL>https://lists.suse.com/pipermail/sle-updates/2021-July/019639.html</URL>
      <Description>E-Mail link for SUSE-SU-2021:2409-1</Description>
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      <URL>https://www.suse.com/support/security/rating/</URL>
      <Description>SUSE Security Ratings</Description>
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      <URL>https://bugzilla.suse.com/1152489</URL>
      <Description>SUSE Bug 1152489</Description>
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      <URL>https://bugzilla.suse.com/1182470</URL>
      <Description>SUSE Bug 1182470</Description>
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      <Description>SUSE Bug 1185486</Description>
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      <URL>https://bugzilla.suse.com/1187927</URL>
      <Description>SUSE Bug 1187927</Description>
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      <URL>https://bugzilla.suse.com/1187972</URL>
      <Description>SUSE Bug 1187972</Description>
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      <URL>https://bugzilla.suse.com/1187980</URL>
      <Description>SUSE Bug 1187980</Description>
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        <Description>SUSE Bug 1188117</Description>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.</Note>
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