Public bug reported:
[Impact]
Abusing ext4_fallocate() (as a normal user) triggers a BUG()/kernel panic.
[Fix]
Apply this upstream fix:
commit 2da376228a2427501feb9d15815a45dbdbdd753e
Author: Tadeusz Struk <tadeusz.st...@linaro.org>
Date: Thu Mar 31 13:05:15 2022 -0700
ext4: limit length to bitmap_maxbytes - blocksize in punch_hole
[Test]
The reporter has provided a working reproducer.
[Where problems could occur]
Upstream fix already slated for @stable inclusion.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Impish)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Impish)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1972281
Title:
ext4: limit length to bitmap_maxbytes
Status in linux package in Ubuntu:
New
Status in linux source package in Impish:
New
Status in linux source package in Jammy:
New
Bug description:
[Impact]
Abusing ext4_fallocate() (as a normal user) triggers a BUG()/kernel panic.
[Fix]
Apply this upstream fix:
commit 2da376228a2427501feb9d15815a45dbdbdd753e
Author: Tadeusz Struk <tadeusz.st...@linaro.org>
Date: Thu Mar 31 13:05:15 2022 -0700
ext4: limit length to bitmap_maxbytes - blocksize in punch_hole
[Test]
The reporter has provided a working reproducer.
[Where problems could occur]
Upstream fix already slated for @stable inclusion.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1972281/+subscriptions
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