CVE-2024-40901
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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/
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.31% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0081d2b3ae0a17a86b8cc0fa3c8bdc54e233ba16Mailing List, Patch
- https://git.kernel.org/stable/c/18abb5db0aa9b2d48f7037a88b41af2eef821674Mailing List, Patch
- https://git.kernel.org/stable/c/19649e49a6df07cd2e03e0a11396fd3a99485ec2Mailing List, Patch
- https://git.kernel.org/stable/c/4254dfeda82f20844299dca6c38cbffcfd499f41Mailing List, Patch
- https://git.kernel.org/stable/c/46bab2bcd771e725ff5ca3a68ba68cfeac45676cMailing List, Patch
- https://git.kernel.org/stable/c/521f333e644c4246ca04a4fc4772edc53dd2a801Mailing List, Patch
- https://git.kernel.org/stable/c/9079338c5a0d1f1fee34fb1c9e99b754efe414c5Mailing List, Patch
- https://git.kernel.org/stable/c/e9bce7c751f6d6c7be88c0bc081a66aaf61a23eeMailing List, Patch
- https://git.kernel.org/stable/c/0081d2b3ae0a17a86b8cc0fa3c8bdc54e233ba16Mailing List, Patch
- https://git.kernel.org/stable/c/18abb5db0aa9b2d48f7037a88b41af2eef821674Mailing List, Patch
- https://git.kernel.org/stable/c/19649e49a6df07cd2e03e0a11396fd3a99485ec2Mailing List, Patch
- https://git.kernel.org/stable/c/4254dfeda82f20844299dca6c38cbffcfd499f41Mailing List, Patch
- https://git.kernel.org/stable/c/46bab2bcd771e725ff5ca3a68ba68cfeac45676cMailing List, Patch
- https://git.kernel.org/stable/c/521f333e644c4246ca04a4fc4772edc53dd2a801Mailing List, Patch
- https://git.kernel.org/stable/c/9079338c5a0d1f1fee34fb1c9e99b754efe414c5Mailing List, Patch
- https://git.kernel.org/stable/c/e9bce7c751f6d6c7be88c0bc081a66aaf61a23eeMailing List, Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.