Public bug reported:

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The following upstream
       stable patches should be included in the Ubuntu kernel:

       v5.4.55 upstream stable release
       from git://git.kernel.org/

AX.25: Fix out-of-bounds read in ax25_connect()
AX.25: Prevent out-of-bounds read in ax25_sendmsg()
dev: Defer free of skbs in flush_backlog
drivers/net/wan/x25_asy: Fix to make it work
ip6_gre: fix null-ptr-deref in ip6gre_init_net()
net-sysfs: add a newline when printing 'tx_timeout' by sysfs
net: udp: Fix wrong clean up for IS_UDPLITE macro
qrtr: orphan socket in qrtr_release()
rtnetlink: Fix memory(net_device) leak when ->newlink fails
rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA
tcp: allow at most one TLP probe per flight
AX.25: Prevent integer overflows in connect and sendmsg
sctp: shrink stream outq only when new outcnt < old outcnt
sctp: shrink stream outq when fails to do addstream reconf
udp: Copy has_conns in reuseport_grow().
udp: Improve load balancing for SO_REUSEPORT.
regmap: debugfs: check count when read regmap file
PM: wakeup: Show statistics for deleted wakeup sources again
Revert "dpaa_eth: fix usage as DSA master, try 3"
Linux 5.4.55
UBUNTU: upstream stable to v5.4.55

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed

** Affects: linux (Ubuntu Focal)
     Importance: Undecided
     Assignee: Kamal Mostafa (kamalmostafa)
         Status: In Progress


** Tags: kernel-stable-tracking-bug

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

** Tags added: kernel-stable-tracking-bug

** Also affects: linux (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Focal)
       Status: New => In Progress

** Changed in: linux (Ubuntu Focal)
     Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Description changed:

+ SRU Justification
  
-     SRU Justification
+     Impact:
+        The upstream process for stable tree updates is quite similar
+        in scope to the Ubuntu SRU process, e.g., each patch has to
+        demonstrably fix a bug, and each patch is vetted by upstream
+        by originating either directly from a mainline/stable Linux tree or
+        a minimally backported form of that patch. The following upstream
+        stable patches should be included in the Ubuntu kernel:
  
-     Impact:
-        The upstream process for stable tree updates is quite similar
-        in scope to the Ubuntu SRU process, e.g., each patch has to
-        demonstrably fix a bug, and each patch is vetted by upstream
-        by originating either directly from a mainline/stable Linux tree or
-        a minimally backported form of that patch. The following upstream
-        stable patches should be included in the Ubuntu kernel:
+        v5.4.55 upstream stable release
+        from git://git.kernel.org/
  
-        v5.4.55 upstream stable release
-        from git://git.kernel.org/
+ AX.25: Fix out-of-bounds read in ax25_connect()
+ AX.25: Prevent out-of-bounds read in ax25_sendmsg()
+ dev: Defer free of skbs in flush_backlog
+ drivers/net/wan/x25_asy: Fix to make it work
+ ip6_gre: fix null-ptr-deref in ip6gre_init_net()
+ net-sysfs: add a newline when printing 'tx_timeout' by sysfs
+ net: udp: Fix wrong clean up for IS_UDPLITE macro
+ qrtr: orphan socket in qrtr_release()
+ rtnetlink: Fix memory(net_device) leak when ->newlink fails
+ rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA
+ tcp: allow at most one TLP probe per flight
+ AX.25: Prevent integer overflows in connect and sendmsg
+ sctp: shrink stream outq only when new outcnt < old outcnt
+ sctp: shrink stream outq when fails to do addstream reconf
+ udp: Copy has_conns in reuseport_grow().
+ udp: Improve load balancing for SO_REUSEPORT.
+ regmap: debugfs: check count when read regmap file
+ PM: wakeup: Show statistics for deleted wakeup sources again
+ Revert "dpaa_eth: fix usage as DSA master, try 3"
+ Linux 5.4.55
+ UBUNTU: upstream stable to v5.4.55

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https://bugs.launchpad.net/bugs/1890343

Title:
  Focal update: v5.4.55 upstream stable release

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Focal:
  In Progress

Bug description:
  SRU Justification

      Impact:
         The upstream process for stable tree updates is quite similar
         in scope to the Ubuntu SRU process, e.g., each patch has to
         demonstrably fix a bug, and each patch is vetted by upstream
         by originating either directly from a mainline/stable Linux tree or
         a minimally backported form of that patch. The following upstream
         stable patches should be included in the Ubuntu kernel:

         v5.4.55 upstream stable release
         from git://git.kernel.org/

  AX.25: Fix out-of-bounds read in ax25_connect()
  AX.25: Prevent out-of-bounds read in ax25_sendmsg()
  dev: Defer free of skbs in flush_backlog
  drivers/net/wan/x25_asy: Fix to make it work
  ip6_gre: fix null-ptr-deref in ip6gre_init_net()
  net-sysfs: add a newline when printing 'tx_timeout' by sysfs
  net: udp: Fix wrong clean up for IS_UDPLITE macro
  qrtr: orphan socket in qrtr_release()
  rtnetlink: Fix memory(net_device) leak when ->newlink fails
  rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA
  tcp: allow at most one TLP probe per flight
  AX.25: Prevent integer overflows in connect and sendmsg
  sctp: shrink stream outq only when new outcnt < old outcnt
  sctp: shrink stream outq when fails to do addstream reconf
  udp: Copy has_conns in reuseport_grow().
  udp: Improve load balancing for SO_REUSEPORT.
  regmap: debugfs: check count when read regmap file
  PM: wakeup: Show statistics for deleted wakeup sources again
  Revert "dpaa_eth: fix usage as DSA master, try 3"
  Linux 5.4.55
  UBUNTU: upstream stable to v5.4.55

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