CVE-2019-15239

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Summary

CVECVE-2019-15239
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-08-20 08:15:00 UTC
Updated2023-11-07 03:05:00 UTC
DescriptionIn the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12, was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation. NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or 4.14.x longterm kernels before 4.14.139.

Risk And Classification

Problem Types: CWE-416

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Linux Linux Kernel 4.16.12 All All All
Operating System Linux Linux Kernel 4.16.12 All All All

References

ReferenceSourceLinkTags
Red Hat Customer Portal REDHAT access.redhat.com
active/CVE-2019-15239 · f6273af2d956a87296b6b60379d0a186c9be4bbc · Debian kernel team / kernel-sec · GitLab MISC salsa.debian.org Third Party Advisory
Red Hat Customer Portal REDHAT access.redhat.com
[security-announce] openSUSE-SU-2019:2181-1: important: Security update SUSE lists.opensuse.org
Re: [PATCH 3.16-4.14] tcp: Clear sk_send_head after purging the write queue - Ben Hutchings lore.kernel.org
[security-announce] openSUSE-SU-2019:2173-1: important: Security update SUSE lists.opensuse.org
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Patch
Linux Kernel 4.9 - TCP Socket Handling Use-After-Free (CVE-2019-15239) MISC pulsesecurity.co.nz Exploit, Third Party Advisory
Red Hat Customer Portal REDHAT access.redhat.com
Debian -- Security Information -- DSA-4497-1 linux MISC www.debian.org Third Party Advisory
Re: [PATCH 3.16-4.14] tcp: Clear sk_send_head after purging the write queue - Ben Hutchings MISC lore.kernel.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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