Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: zram: do not forget to endio for partial discard requests As reported by Qu Wenruo and Avinesh Kumar, the following getconf PAGESIZE 65536 blkdiscard -p 4k /dev/zram0 takes literally forever to complete. zram doesn't support partial discards and just returns immediately w/o doing any discard work in such cases. The problem is that we forget to endio on our way out, so blkdiscard sleeps forever in submit_bio_wait(). Fix this by jumping to end_bio label, which does bio_endio().
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.4, < 6.6.140 |
References
- https://git.kernel.org/stable/c/2d1f18efccdb8b29552399d024c36b705447e975Patch
- https://git.kernel.org/stable/c/35d3300f6357cfaa72db2721dc2b345b19bac5dfPatch
- https://git.kernel.org/stable/c/68ce397e8236088fc53b9532d383a722288c8194Patch
- https://git.kernel.org/stable/c/a02363f71a79b755daa78a70d6b217f9c13c8c85Patch
- https://git.kernel.org/stable/c/e3668b371329ea036ff022ce8ecc82f8befcf003Patch
FAQ
What is CVE-2026-46089?
CVE-2026-46089 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: zram: do not forget to endio for partial discard requests As reported by Qu Wenruo and Avinesh Kumar, the following getconf PAGE...
How severe is CVE-2026-46089?
CVE-2026-46089 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46089?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.