** Description changed: [Impact] - When running with the HWE kernel (5.4 didn't support altnames), altnames containing garbage (uninitialized memory) may get assigned to a NIC. This is 100% reproducible on arm64. + When running with the HWE kernel (5.4 didn't support altnames), altnames containing garbage (uninitialized memory) may get assigned to a NIC. This is 100% reproducible on arm64. The upstream commit message suggests that this has been seen to cause segfaults. [Test Case] 1) echo 1 > /sys/class/net/enp189s0f0/device/sriov_numvfs 2) ip a 3) 10: eno1v0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 1e:d8:e1:e9:ae:25 brd ff:ff:ff:ff:ff:ff altname @▒ު▒ altname enp125s0f0v0 11: enp189s0f0v0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 76:ea:f4:65:dd:33 brd ff:ff:ff:ff:ff:ff altname ▒b▒ު▒ altname ▒▒▒▒▒▒ [Fix] There's a one liner upstream fix that simply initializes a variable: https://github.com/systemd/systemd/commit/61fd7d6720c562c88ab79062ff8d131e5e3c7b1b [What Could Go Wrong] - TBD + The fix itself is innocuous - just initializing a variable to NULL. So the real risk here would seem to be limited to the common risks in updating a core package in the Ubuntu distribution.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1933402 Title: net card set VF and altname display blurred character To manage notifications about this bug go to: https://bugs.launchpad.net/kunpeng920/+bug/1933402/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
