Bug 1903278 - kernel: SLUB bulk alloc slowpath omits required TID increment
Summary: kernel: SLUB bulk alloc slowpath omits required TID increment
Keywords:
Status: CLOSED DUPLICATE of bug 1875840
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1903279
Blocks: 1903280
TreeView+ depends on / blocked
 
Reported: 2020-12-01 18:34 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-12-10 12:51 UTC (History)
41 users (show)

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Last Closed: 2020-12-10 12:50:31 UTC
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Description Guilherme de Almeida Suckevicz 2020-12-01 18:34:32 UTC 
An issue was discovered in kmem_cache_alloc_bulk in mm/slub.c in the Linux kernel before 5.5.11. The slowpath lacks the required TID increment.

Reference:
https://bugs.chromium.org/p/project-zero/issues/detail?id=2022

Upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd4d9c7d0c71866ec0c2825189ebd2ce35bd95b8
Comment 1 Guilherme de Almeida Suckevicz 2020-12-01 18:35:07 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1903279]
Comment 2 Justin M. Forbes 2020-12-02 14:22:43 UTC 
This was fixed for Fedora with the 5.5.11 stable kernel updates.
Comment 3 Petr Matousek 2020-12-10 12:51:47 UTC 

*** This bug has been marked as a duplicate of bug 1875840 ***
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