VulnerabilityModified
CVE-2021-32606
In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free.
HIGH 7.8EPSS 0.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.43% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel · fedoraproject/fedora
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/05/12/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/13/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/14/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/28/1Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c400aeb44daf041627722581ade527bb3c1d
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/
- https://security.netapp.com/advisory/ntap-20210625-0001/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/05/11/16Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/13/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/14/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/28/1Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c400aeb44daf041627722581ade527bb3c1d
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/
- https://security.netapp.com/advisory/ntap-20210625-0001/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/05/11/16Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.