scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables() During fuzz testing, the following issue was discovered: BUG: KMSAN: uninit-value in __dma_map_sg_attrs+0x217/0x310 __dma_map_sg_attrs+0x217/0x310 dma_map_sg_attrs+0x4a/0x70 ata_qc_issue+0x9f8/0x1420 __ata_scsi_queuecmd+0x1657/0x1740 ata_scsi_queuecmd+0x79a/0x920 scsi_queue_rq+0x4472/0x4f40 blk_mq_dispatch_rq_list+0x1cca/0x3ee0 __blk_mq_sched_dispatch_requests+0x458/0x630 blk_mq_sched_dispatch_requests+0x15b/0x340 __blk_mq_run_hw_queue+0xe5/0x250 __blk_mq_delay_run_hw_queue+0x138/0x780 blk_mq_run_hw_queue+0x4bb/0x7e0 blk_mq_sched_insert_request+0x2a7/0x4c0 blk_execute_rq+0x497/0x8a0 sg_io+0xbe0/0xe20 scsi_ioctl+0x2b36/0x3c60 sr_block_ioctl+0x319/0x440 blkdev_ioctl+0x80f/0xd70 __se_sys_ioctl+0x219/0x420 __x64_sys_ioctl+0x93/0xe0 x64_sys_call+0x1d6c/0x3ad0 do_syscall_64+0x4c/0xa0 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Uninit was created at: __alloc_pages+0x5c0/0xc80 alloc_pages+0xe0e/0x1050 blk_rq_map_user_iov+0x2b77/0x6100 blk_rq_map_user_io+0x2fa/0x4d0 sg_io+0xad6/0xe20 scsi_ioctl+0x2b36/0x3c60 sr_block_ioctl+0x319/0x440 blkdev_ioctl+0x80f/0xd70 __se_sys_ioctl+0x219/0x420 __x64_sys_ioctl+0x93/0xe0 x64_sys_call+0x1d6c/0x3ad0 do_syscall_64+0x4c/0xa0 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Bytes 14-15 of 16 are uninitialized Memory access of size 16 starts at ffff88800cbdb000 When processing the last unaligned element of the scatterlist, it is sup
CVE-2026-89515
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89515
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "1aa6df61cef1f47f503c3ccf60d08c4dd931fdc1",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "6da140ebdfdd6aa3773945f2c0ebba01d2ef33d8",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "fd2cbe08c6ccba7fc1ddb830653a93bb7e2d833c",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "28ed5343666ff424ce5e248fa1c5a402303b4aff",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "a4353ec7742bdf87dcdde5875270feb3a1982a51",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "e7143c3f4e5c0a7986733c6f27009274bf6c4264",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409",
"versionType": "git"
},
{
"status": "affected",
"version": "40b01b9bbdf51ae543a04744283bf2d56c4a6afa",
"lessThan": "626147717bea776b61ed3631d2c26283760c4cc4",
"versionType": "git"
}
],
"programFiles": [
"drivers/scsi/scsi_lib.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.25"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.25",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/scsi/scsi_lib.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89515
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #35042 · Revision 1
- Added to Heist Feed
- Publisher date