VDB
CVE-2019-15239
CVE-2019-15239
PUBLISHED
In 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.
EPSS 0.03% · 10.7th percentile
Risk Scores
EPSS Score
0.03%
10.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | linux-kvm | 4.4.0-1043.49, 4.4.0-1012.17, 4.4.0-1051.58 |
| Ubuntu:Pro:14.04:LTS | linux-aws | 4.4.0-1039.42, 4.4.0-1032.35, 4.4.0-1031.34 |
| Ubuntu:Pro:FIPS:16.04:LTS | linux-fips | 4.4.0-1012.16, 0, 0 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | 0, 5.15.0-1073.75 |
| Ubuntu:20.04:LTS | linux-riscv | 5.4.0-27.31, 5.4.0-37.42, 5.4.0-40.45 |
| Ubuntu:Pro:14.04:LTS | linux-lts-xenial | 4.4.0-78.99~14.04.2, 4.4.0-135.161~14.04.1, 4.4.0-137.163~14.04.1 |
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1015.17, 5.15.0-1005.5, 5.15.0-1019.22 |
| Ubuntu:16.04:LTS | linux | 4.4.0-108.131, 4.3.0-5.16, 0 |
| Ubuntu:20.04:LTS | linux-raspi2 | 5.3.0-1014.16, 0, 5.4.0-1006.6 |
| Ubuntu:16.04:LTS | linux-raspi2 | 4.4.0-1050.57, 4.4.0-1051.58, 4.4.0-1052.59 |
| Ubuntu:16.04:LTS | linux-aws | 4.4.0-1011.20, 4.4.0-1012.21, 4.4.0-1016.25 |
| Ubuntu:20.04:LTS | linux-gke | 5.4.0-1035.37, 5.4.0-1036.38, 5.4.0-1037.39 |
| Ubuntu:20.04:LTS | linux-azure-fde | *, *, 5.4.0-1063.66+cvm2.2 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | 6.8.0-2019.20, 0 |
| Ubuntu:16.04:LTS | linux-snapdragon | 4.4.0-1078.83, 4.4.0-1012.12, 4.4.0-1077.82 |
| Ubuntu:22.04:LTS | linux-realtime | 0, 5.15.0-1032.35 |
Timeline
- Aug 20, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 22, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 25, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 27, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 2, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Nov 5, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-15239 third-party-advisory
- https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-tcpsocketsuaf third-party-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f582b248d0a86bae5788c548d7bb5bca6f7691a third-party-advisory
- https://lore.kernel.org/stable/41a61a2f87691d2bc839f26cdfe6f5ff2f51e472.camel@decadent.org.uk/ third-party-advisory
- https://salsa.debian.org/kernel-team/kernel-sec/blob/f6273af2d956a87296b6b60379d0a186c9be4bbc/active/CVE-2019-15239 third-party-advisory
- https://www.debian.org/security/2019/dsa-4497 third-party-advisory
- https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/xenial/commit/?id=edff0f7fc52aa3fba1141755ae5aa008c51eb518 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-15239 third-party-advisory