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[20.09] qemu: apply patch for CVE-2020-27617 #103246

Merged
merged 1 commit into from Nov 10, 2020
Merged

[20.09] qemu: apply patch for CVE-2020-27617 #103246

merged 1 commit into from Nov 10, 2020

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mweinelt
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@mweinelt mweinelt commented Nov 9, 2020

Motivation for this change

Backport #102481

An assert(3) failure issue was found in the networking helper functions of QEMU. It could occur in the eth_get_gso_type() routine, if a packet does not have a valid networking L3 protocol (ex. IPv4, IPv6) value. A guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Fixes: CVE-2020-27617
(cherry picked from commit 0c54b75)

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.

@mweinelt
qemu: apply patch for CVE-2020-27617
48a737c 
An assert(3) failure issue was found in the networking helper functions of QEMU. It could occur in the eth_get_gso_type() routine, if a packet does not have a valid networking L3 protocol (ex. IPv4, IPv6) value. A guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Fixes: CVE-2020-27617
(cherry picked from commit 0c54b75)
@mweinelt mweinelt requested a review from Ma27 November 9, 2020 23:45
@ofborg ofborg bot requested a review from edolstra November 10, 2020 00:08
@Ma27 Ma27 merged commit 2b4e628 into release-20.09 Nov 10, 2020
@Ma27 Ma27 deleted the 20.09/qemu branch November 10, 2020 09:33
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@Ma27 Ma27 Awaiting requested review from Ma27

@edolstra edolstra Awaiting requested review from edolstra

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1.severity: security 10.rebuild-darwin: 11-100 10.rebuild-linux: 11-100
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