CVE-2021-3347
- State
- Published
- Severity
- 7.8 High
- Published
- Jan 29, 2021
- Updated
- Feb 25, 2026
- Reserved
- Jan 29, 2021
Description
An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-416 Use After Free
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9
- https://www.openwall.com/lists/oss-security/2021/01/29/3
- https://www.openwall.com/lists/oss-security/2021/01/29/1
- [oss-security] 20210129 Re: Linux Kernel: local priv escalation via futexesmailing-list
- [oss-security] 20210129 Re: Linux Kernel: local priv escalation via futexesmailing-list
- [oss-security] 20210201 Re: Linux Kernel: local priv escalation via futexesmailing-list
- DSA-4843vendor-advisory
- FEDORA-2021-6e805a5051vendor-advisory
- FEDORA-2021-879c756377vendor-advisory
- [debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security updatemailing-list
- https://security.netapp.com/advisory/ntap-20210304-0005/
- [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security updatemailing-list
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