Description
The LIST_POISON feature in include/linux/poison.h in the Linux kernel before 4.3, as used in Android 6.0.1 before 2016-03-01, does not properly consider the relationship to the mmap_min_addr value, which makes it easier for attackers to bypass a poison-pointer protection mechanism by triggering the use of an uninitialized list entry, aka Android internal bug 26186802, a different vulnerability than CVE-2015-3636.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.3.1-1 | — |
| Debian 13 | linux | 4.3.1-1 | — |
| Debian 12 | linux | 4.3.1-1 | — |
| Debian 8 | linux | 3.16.7-ckt25-2+deb8u2 | DSA-3607-1 |
| Debian 7 | linux | 3.2.81-1 | DLA-516-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-86.130 | USN-2968-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-71.91~14.04.1 | USN-2969-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-59.65~14.04.1 | USN-2970-1 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-36.41~14.04.1 | USN-2971-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Advisories 6
- USN-2968-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-516-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3607-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2969-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2970-1 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2971-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
References
- USN-2971-2 vendor-advisory
- USN-2967-1 vendor-advisory
- USN-2970-1 vendor-advisory
- https://github.com/torvalds/linux/commit/8a5e5e02fc83aaf67053ab53b359af08c6c49aaf
- [oss-security] 20150502 Re: CVE request for a fixed bug existed in all versions of linux kernel from KeenTeam mailing-list
- USN-2969-1 vendor-advisory
- USN-2967-2 vendor-advisory
- USN-2968-1 vendor-advisory
- http://source.android.com/security/bulletin/2016-03-01.html
- USN-2971-3 vendor-advisory
- DSA-3607 vendor-advisory
- USN-2971-1 vendor-advisory
- USN-2968-2 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8a5e5e02fc83aaf67053ab53b359af08c6c49aaf
- 84260 vdb-entry