CVE-2021-47351
What it is
In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix races between xattr_{set|get} and listxattr operations UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1]. Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4. [1] https://lore.kernel.org/linux-mtd/[email protected]
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
- Weakness
- CWE-617
- Record status
- Modified
Affected
- Linux Kernel < 5.4.133
- Linux Kernel < 5.10.51
- Linux Kernel < 5.12.18
- Linux Kernel < 5.13.3
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-2021-47351.md and follow it. Check whether this project is affected by CVE-2021-47351. 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/38dde03eb239605f428f3f1e4baa73d4933a4cc6
- https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
- https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
- https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
- https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5
- https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6
- https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
- https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
- https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
- https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5
References
- https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6
- https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
- https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
- https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
- https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5
- https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6
- https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
- https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
- https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
- https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5