Bug 2073941 (CVE-2022-28796) - CVE-2022-28796 kernel: a use-after-free caused by a transaction_t race condition
Summary: CVE-2022-28796 kernel: a use-after-free caused by a transaction_t race condition
Keywords:
Status: NEW
Alias: CVE-2022-28796
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2073942 2074079 2074080 2074081 2074082
Blocks: 2073943
TreeView+ depends on / blocked
 
Reported: 2022-04-11 08:12 UTC by Marian Rehak
Modified: 2023-09-19 14:13 UTC (History)
44 users (show)

Fixed In Version: kernel 5.17.1
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel’s journaling layer of the ext4 and OCFS2 file system functionality in the way a user can trigger a race condition during writing to the file system. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Marian Rehak 2022-04-11 08:12:25 UTC 
jbd2_journal_wait_updates in fs/jbd2/transaction.c in the Linux kernel before 5.17.1 has a use-after-free caused by a transaction_t race condition.

Reference:

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.1
https://github.com/torvalds/linux/commit/cc16eecae687912238ee6efbff71ad31e2bc414e
Comment 1 Marian Rehak 2022-04-11 08:12:56 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2073942]
Comment 7 Justin M. Forbes 2022-04-13 21:29:22 UTC 
The fix The patch which created this issue was in 5.17-rc3 and later kernels, and the fix was brought back into 5.17.1, so stable Fedora releases are not impacted, and the Fedora 36 beta was fixed with the 5.17.1 kernel update.
Note You need to log in before you can comment on or make changes to this bug.