CVE-2022-50436
What it is
In the Linux kernel, the following vulnerability has been resolved: ext4: don't set up encryption key during jbd2 transaction Commit a80f7fcf1867 ("ext4: fixup ext4_fc_track_* functions' signature") extended the scope of the transaction in ext4_unlink() too far, making it include the call to ext4_find_entry(). However, ext4_find_entry() can deadlock when called from within a transaction because it may need to set up the directory's encryption key. Fix this by restoring the transaction to its original scope.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.163
- Linux Kernel < 5.15.87
- Linux Kernel < 6.0.18
- Linux Kernel < 6.1.4
- Linux Kernel 5.10
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-50436.md and follow it. Check whether this project is affected by CVE-2022-50436. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/1ba993208bcfd691e241483420a2a761d3f15750
- https://git.kernel.org/stable/c/206dd3acfb9bca54a25b228c7c7c2257eedde09b
- https://git.kernel.org/stable/c/23ad034760dd38e12b0e0e1b28b9629f330810a1
- https://git.kernel.org/stable/c/4c0d5778385cb3618ff26a561ce41de2b7d9de70
- https://git.kernel.org/stable/c/6220ec405571ded17efedc56587190b542adf246
References
- https://git.kernel.org/stable/c/1ba993208bcfd691e241483420a2a761d3f15750
- https://git.kernel.org/stable/c/206dd3acfb9bca54a25b228c7c7c2257eedde09b
- https://git.kernel.org/stable/c/23ad034760dd38e12b0e0e1b28b9629f330810a1
- https://git.kernel.org/stable/c/4c0d5778385cb3618ff26a561ce41de2b7d9de70
- https://git.kernel.org/stable/c/6220ec405571ded17efedc56587190b542adf246