This bug was fixed in the package linux - 5.4.0-77.86
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linux (5.4.0-77.86) focal; urgency=medium
* UAF on CAN J1939 j1939_can_recv (LP: #1932209)
- SAUCE: can: j1939: delay release of j1939_priv after synchronize_rcu
* UAF on CAN BCM bcm_rx_handler (LP: #1931855)
- SAUCE: can: bcm: delay release of struct bcm_op after synchronize_rcu
linux (5.4.0-76.85) focal; urgency=medium
* focal/linux: 5.4.0-76.85 -proposed tracker (LP: #1932123)
* Upstream v5.9 introduced 'module' patches that removed exported symbols
(LP: #1932065)
- SAUCE: Revert "modules: inherit TAINT_PROPRIETARY_MODULE"
- SAUCE: Revert "modules: return licensing information from find_symbol"
- SAUCE: Revert "modules: rename the licence field in struct symsearch to
license"
- SAUCE: Revert "modules: unexport __module_address"
- SAUCE: Revert "modules: unexport __module_text_address"
- SAUCE: Revert "modules: mark each_symbol_section static"
- SAUCE: Revert "modules: mark find_symbol static"
- SAUCE: Revert "modules: mark ref_module static"
linux (5.4.0-75.84) focal; urgency=medium
* focal/linux: 5.4.0-75.84 -proposed tracker (LP: #1930032)
* Packaging resync (LP: #1786013)
- update dkms package versions
* CVE-2021-33200
- bpf: Wrap aux data inside bpf_sanitize_info container
- bpf: Fix mask direction swap upon off reg sign change
- bpf: No need to simulate speculative domain for immediates
* Realtek USB hubs in Dell WD19SC/DC/TB fail to work after exiting s2idle
(LP: #1928242)
- USB: Verify the port status when timeout happens during port suspend
* CVE-2020-26145
- ath10k: drop fragments with multicast DA for SDIO
- ath10k: add CCMP PN replay protection for fragmented frames for PCIe
- ath10k: drop fragments with multicast DA for PCIe
* CVE-2020-26141
- ath10k: Fix TKIP Michael MIC verification for PCIe
* CVE-2020-24588
- mac80211: properly handle A-MSDUs that start with an RFC 1042 header
- cfg80211: mitigate A-MSDU aggregation attacks
- mac80211: drop A-MSDUs on old ciphers
- ath10k: drop MPDU which has discard flag set by firmware for SDIO
* CVE-2020-26139
- mac80211: do not accept/forward invalid EAPOL frames
* CVE-2020-24586 // CVE-2020-24587 // CVE-2020-24587 for such cases.
- mac80211: extend protection against mixed key and fragment cache attacks
* CVE-2020-24586 // CVE-2020-24587
- mac80211: prevent mixed key and fragment cache attacks
- mac80211: add fragment cache to sta_info
- mac80211: check defrag PN against current frame
- mac80211: prevent attacks on TKIP/WEP as well
* CVE-2020-26147
- mac80211: assure all fragments are encrypted
* raid10: Block discard is very slow, causing severe delays for mkfs and
fstrim operations (LP: #1896578)
- md: add md_submit_discard_bio() for submitting discard bio
- md/raid10: extend r10bio devs to raid disks
- md/raid10: pull the code that wait for blocked dev into one function
- md/raid10: improve raid10 discard request
- md/raid10: improve discard request for far layout
- dm raid: remove unnecessary discard limits for raid0 and raid10
* [SRU] mpt3sas: only one vSES is handy even IOC has multi vSES (LP: #1926517)
- scsi: mpt3sas: Only one vSES is present even when IOC has multi vSES
* kvm: properly tear down PV features on hibernate (LP: #1920944)
- x86/kvm: Fix pr_info() for async PF setup/teardown
- x86/kvm: Teardown PV features on boot CPU as well
- x86/kvm: Disable kvmclock on all CPUs on shutdown
- x86/kvm: Disable all PV features on crash
- x86/kvm: Unify kvm_pv_guest_cpu_reboot() with kvm_guest_cpu_offline()
* Focal update: v5.4.119 upstream stable release (LP: #1929615)
- Bluetooth: verify AMP hci_chan before amp_destroy
- hsr: use netdev_err() instead of WARN_ONCE()
- bluetooth: eliminate the potential race condition when removing the HCI
controller
- net/nfc: fix use-after-free llcp_sock_bind/connect
- Revert "USB: cdc-acm: fix rounding error in TIOCSSERIAL"
- tty: moxa: fix TIOCSSERIAL jiffies conversions
- tty: amiserial: fix TIOCSSERIAL permission check
- USB: serial: usb_wwan: fix TIOCSSERIAL jiffies conversions
- staging: greybus: uart: fix TIOCSSERIAL jiffies conversions
- USB: serial: ti_usb_3410_5052: fix TIOCSSERIAL permission check
- staging: fwserial: fix TIOCSSERIAL jiffies conversions
- tty: moxa: fix TIOCSSERIAL permission check
- staging: fwserial: fix TIOCSSERIAL permission check
- usb: typec: tcpm: Address incorrect values of tcpm psy for fixed supply
- usb: typec: tcpm: Address incorrect values of tcpm psy for pps supply
- usb: typec: tcpm: update power supply once partner accepts
- usb: xhci-mtk: remove or operator for setting schedule parameters
- usb: xhci-mtk: improve bandwidth scheduling with TT
- ASoC: samsung: tm2_wm5110: check
