CVE-2026-46089
zram: do not forget to endio for partial discard requests
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
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Affected Versions
Linux / Linux
0120dd6e4e202e19a0e011e486fb2da40a5ea279 < 2d1f18efccdb8b29552399d024c36b705447e975 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < 35d3300f6357cfaa72db2721dc2b345b19bac5df 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < a02363f71a79b755daa78a70d6b217f9c13c8c85 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < 68ce397e8236088fc53b9532d383a722288c8194 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < e3668b371329ea036ff022ce8ecc82f8befcf003
Linux / Linux
6.4
References
git.kernel.org: https://git.kernel.org/stable/c/2d1f18efccdb8b29552399d024c36b705447e975 git.kernel.org: https://git.kernel.org/stable/c/35d3300f6357cfaa72db2721dc2b345b19bac5df git.kernel.org: https://git.kernel.org/stable/c/a02363f71a79b755daa78a70d6b217f9c13c8c85 git.kernel.org: https://git.kernel.org/stable/c/68ce397e8236088fc53b9532d383a722288c8194 git.kernel.org: https://git.kernel.org/stable/c/e3668b371329ea036ff022ce8ecc82f8befcf003