Vulnerability Description
A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.26, < 4.4.248 |
| Fedoraproject | Fedora | 32 |
| Debian | Debian Linux | 9.0 |
| Netapp | Active Iq Unified Manager | - |
| Broadcom | Fabric Operating System | - |
| Netapp | Solidfire Baseboard Management Controller Firmware | - |
| Netapp | Solidfire Baseboard Management Controller | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
| Netapp | A700S Firmware | - |
| Netapp | A700S | - |
| Netapp | 8300 Firmware | - |
| Netapp | 8300 | - |
| Netapp | 8700 Firmware | - |
| Netapp | 8700 | - |
| Netapp | A400 Firmware | - |
| Netapp | A400 | - |
| Oracle | Tekelec Platform Distribution | >= 7.4.0, <= 7.7.1 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.htmlThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2020/12/10/1Mailing ListPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54PatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20210122-0001/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4843Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.htmlThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2020/12/10/1Mailing ListPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54PatchVendor Advisory
FAQ
What is CVE-2020-29661?
CVE-2020-29661 is a vulnerability with a CVSS score of 7.8 (HIGH). A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
How severe is CVE-2020-29661?
CVE-2020-29661 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-29661?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Debian Debian Linux, Netapp Active Iq Unified Manager, Broadcom Fabric Operating System.