UBUNTU-CVE-2021-41073

Details

loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

Affected Packages(137 packages)

linux

Ubuntu 24.04 LTS

Fixed in:

6.5.0-9.9

linux

Ubuntu 18.04 LTS

Fixed in:

4.13.0-16.19

linux

Ubuntu 20.04 LTS

Affected versions:

5.3.0-18.195.3.0-24.26

Fixed in:

5.4.0-9.12

linux

Ubuntu 22.04 LTS

Fixed in:

5.13.0-19.19

linux-aws

Ubuntu 20.04 LTS

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.3.0-1010.11

Fixed in:

5.4.0-1005.5

linux-aws

Ubuntu 18.04 LTS

Fixed in:

4.15.0-1001.1

linux-aws

Ubuntu 24.04 LTS

Fixed in:

6.5.0-1008.8

linux-aws

Ubuntu 22.04 LTS

Fixed in:

5.13.0-1005.6

linux-aws-5.0

Ubuntu Pro 18.04 LTS

Affected versions:

5.0.0-1021.24~18.04.15.0.0-1022.25~18.04.15.0.0-1023.26~18.04.15.0.0-1024.27~18.04.15.0.0-1025.285.0.0-1027.30

linux-aws-5.11

Ubuntu 20.04 LTS

Affected versions:

5.11.0-1009.9~20.04.25.11.0-1014.15~20.04.15.11.0-1016.17~20.04.15.11.0-1017.18~20.04.1

Fixed in:

5.11.0-1019.20~20.04.1

References

REPORThttp://www.openwall.com/lists/oss-security/2021/09/18/2 REPORThttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16c8d2df7ec0eed31b7d3b61cb13206a7fb930cc REPORThttps://ubuntu.com/security/CVE-2021-41073 REPORThttps://ubuntu.com/security/notices/USN-5092-1 REPORThttps://ubuntu.com/security/notices/USN-5092-2 REPORThttps://ubuntu.com/security/notices/USN-5096-1 REPORThttps://ubuntu.com/security/notices/USN-5106-1 REPORThttps://www.cve.org/CVERecord?id=CVE-2021-41073

UBUNTU-CVE-2021-41073

Details

Affected Packages(137 packages)

References

CVSS Analysis

Related

Ecosystems(18)

Timeline