CVE-2023-53473
What it is
In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% 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: 0.2% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel < 5.15.112
- Linux Kernel < 6.1.29
- Linux Kernel < 6.2.16
- Linux Kernel < 6.3.3
- Linux Kernel 6.4
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2023-53473.md and follow it. Check whether this project is affected by CVE-2023-53473. 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/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786
- https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553
- https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a
- https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43
- https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424
References
- https://git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786
- https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553
- https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a
- https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43
- https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424