Answer in brief
CVE-2026-74376 records a Critical severity (CVSS 9.8) vulnerability in md/raid10: reset read_slot when reusing r10bio for discard. 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 9.8. 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 | >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <3cb2a606ce4902eceabe68338df0653312f861f8 || >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <561c9711e4f545d6464a023168bdee03b00fa945 || >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <ce3030e92f14362880055de5fe3c258971118853 || >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <742e4afd247d9c972695227716b03d432a7e1d26 || >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <b7313f23ea5a79b199a007bfad64a866cc2c22e7 || >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <eb04e3e9c14ed15914f5fd2eae8b6435f54f095f || >=d30588b2731fb01e1616cf16c3fe79a1443e29aa <6b8a26af065ddc93de2aa5c9f0df98dce9723442 | 3cb2a606ce4902eceabe68338df0653312f861f8, 561c9711e4f545d6464a023168bdee03b00fa945, ce3030e92f14362880055de5fe3c258971118853, 742e4afd247d9c972695227716b03d432a7e1d26, b7313f23ea5a79b199a007bfad64a866cc2c22e7, eb04e3e9c14ed15914f5fd2eae8b6435f54f095f, 6b8a26af065ddc93de2aa5c9f0df98dce9723442 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: md/raid10: reset read_slot when reusing r10bio for discard put_all_bios() always drops devs[i].bio, but it only drops devs[i].repl_bio when r10_bio->read_slot < 0. If discard reuses an r10bio that was previously used for a read, read_slot can still be non-negative, and discard cleanup can skip bio_put() on repl_bio. Reset read_slot to -1 when preparing an r10bio for discard so the replacement bio is always released correctly.
Quoted source text, attributed separately from HOL analysis.