CVE-2017-17053
Description
The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.12.12-1 |
| debian | bullseye | fixed | 4.12.12-1 |
| debian | forky | fixed | 4.12.12-1 |
| debian | sid | fixed | 4.12.12-1 |
| debian | trixie | fixed | 4.12.12-1 |
| linux-kernel | affected | 4.4.153 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5cc
- http://www.securityfocus.com/bid/102010
- https://access.redhat.com/errata/RHSA-2018:0676
- https://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5cc
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10
- https://www.suse.com/security/cve/CVE-2017-17053.html
- https://security-tracker.debian.org/tracker/CVE-2017-17053
CWEs
CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.