CVE-2026-46089
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…
Does this matter?
Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.14% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.