Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — scsi: mpt3sas: Avoid test/set_bit() operating in non-allocated memory
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U H H H 7.8 .0031 23.5 —
AFFECTED
Product Versions Fixed
Linux c696f7b83edeac804e898952058089143f49ca0a – —
Linux 4.10 – 4.19.317
TIMELINE
Jul 12 Reserved by Linux
Jul 12 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-40901 (Linux). CVSS 7.3 → 7.8 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: mpt3sas: Avoid test/set_bit() operating in non-allocated memory
There is a potential out-of-bounds access when using test_bit() on a single
word. The test_bit() and set_bit() functions operate on long values, and
when testing or setting a single word, they can exceed the word
boundary. KASAN detects this issue and produces a dump:
BUG: KASAN: slab-out-of-bounds in _scsih_add_device.constprop.0 (./arch/x86/include/asm/bitops.h:60 ./include/asm-generic/bitops/instrumented-atomic.h:29 drivers/scsi/mpt3sas/mpt3sas_scsih.c:7331) mpt3sas
Write of size 8 at addr ffff8881d26e3c60 by task kworker/u1536:2/2965
For full log, please look at [1].
Make the allocation at least the size of sizeof(unsigned long) so that
set_bit() and test_bit() have sufficient room for read/write operations
without overwriting unallocated memory.
[1] Link: https://lore.kernel.org/all/ZkNcALr3W3KGYYJG@gmail.com/
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| July 12, 2024 | Reserved | Reserved by Linux |
| July 12, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-40901 (Linux). CVSS 7.3 → 7.8 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | c696f7b83edeac804e898952058089143f49ca0a | — |
| Linux | Linux | — | 4.10 | 4.19.317 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-40901 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.