Answer in brief
CVE-2026-46089 records a Medium severity (CVSS 5.5) vulnerability in zram: do not forget to endio for partial discard requests. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <2d1f18efccdb8b29552399d024c36b705447e975 || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <35d3300f6357cfaa72db2721dc2b345b19bac5df || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <a02363f71a79b755daa78a70d6b217f9c13c8c85 || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <68ce397e8236088fc53b9532d383a722288c8194 || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <e3668b371329ea036ff022ce8ecc82f8befcf003 | 2d1f18efccdb8b29552399d024c36b705447e975, 35d3300f6357cfaa72db2721dc2b345b19bac5df, a02363f71a79b755daa78a70d6b217f9c13c8c85, 68ce397e8236088fc53b9532d383a722288c8194, e3668b371329ea036ff022ce8ecc82f8befcf003 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-46089 records a Medium severity (CVSS 5.5) vulnerability in zram: do not forget to endio for partial discard requests. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <2d1f18efccdb8b29552399d024c36b705447e975 || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <35d3300f6357cfaa72db2721dc2b345b19bac5df || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <a02363f71a79b755daa78a70d6b217f9c13c8c85 || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <68ce397e8236088fc53b9532d383a722288c8194 || >=0120dd6e4e202e19a0e011e486fb2da40a5ea279 <e3668b371329ea036ff022ce8ecc82f8befcf003 | 2d1f18efccdb8b29552399d024c36b705447e975, 35d3300f6357cfaa72db2721dc2b345b19bac5df, a02363f71a79b755daa78a70d6b217f9c13c8c85, 68ce397e8236088fc53b9532d383a722288c8194, e3668b371329ea036ff022ce8ecc82f8befcf003 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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().
Quoted source text, attributed separately from HOL analysis.