CVE-2021-28972: Buffer Overflow
First published: Mon Mar 22 2021(Updated: )
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <4.4.263 | |
| Linux Linux kernel | >4.5<=4.9.263 | |
| Linux Linux kernel | >=4.10<4.14.227 | |
| Linux Linux kernel | >4.15<=4.19.183 | |
| Linux Linux kernel | >=4.20<5.4.108 | |
| Linux Linux kernel | >=5.5.0<5.10.26 | |
| Linux Linux kernel | >=5.11<5.11.9 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Netapp Cloud Backup | ||
| Netapp Fas\/aff Baseboard Management Controller | ||
| Netapp Solidfire Baseboard Management Controller Firmware | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc7a0bb058b85ea03db87169c60c7cfdd5d34678
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
- https://security.netapp.com/advisory/ntap-20210430-0003/
- https://launchpad.net/bugs/cve/CVE-2021-28972
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
- https://git.kernel.org/linus/cc7a0bb058b85ea03db87169c60c7cfdd5d34678
- https://security-tracker.debian.org/tracker/CVE-2021-28972
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28972
- https://nvd.nist.gov/vuln/detail/CVE-2021-28972
- https://ubuntu.com/security/CVE-2021-28972
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