This bug was fixed in the package linux - 5.15.0-76.83
---------------
linux (5.15.0-76.83) jammy; urgency=medium
* jammy/linux: 5.15.0-76.83 -proposed tracker (LP: #2023905)
* cls_flower: off-by-one in fl_set_geneve_opt (LP: #2023577)
- net/sched: flower: fix possible OOB write in fl_set_geneve_opt()
* Some INVLPG implementations can leave Global translations unflushed when
PCIDs are enabled (LP: #2023220)
- x86/mm: Avoid incomplete Global INVLPG flushes
-- Thadeu Lima de Souza Cascardo <[email protected]> Thu, 15 Jun
2023 14:47:18 -0300
** Changed in: linux (Ubuntu Jammy)
Status: Fix Committed => Fix Released
** Changed in: linux (Ubuntu Lunar)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2023577
Title:
cls_flower: off-by-one in fl_set_geneve_opt
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Jammy:
Fix Released
Status in linux source package in Kinetic:
Fix Committed
Status in linux source package in Lunar:
Fix Released
Bug description:
[Impact]
An unprivileged user may cause an out-of-bounds write by setting up geneve
options on the flower classifier.
[Test case]
https://seclists.org/oss-sec/2023/q2/219
[Potential regression]
Users setting up geneve options on the flower tc classifier can be affected.
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