{"id":"CVE-2026-46326","state":"PUBLISHED","title":"iio: pressure: mprls0025pa: fix spi_transfer struct initialisation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: pressure: mprls0025pa: fix spi_transfer struct initialisation\n\nMake sure that the spi_transfer struct is zeroed out before use.","publishedAt":"2026-06-09T12:25:53.893Z","updatedAt":"2026-08-05T12:31:21.635Z","severity":{"score":8.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"72158f9ae29a9e56d0f9704ce461a866feaf9925","versionType":"git"},{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"664ffdf34c01810085e4d85508b361c3fdd2ab40","versionType":"git"},{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"9080c7ac30f5f8f8fcb7b27b56df60fea7909c21","versionType":"git"},{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"1e0ac56c92e26115cbc8cfc639843725cb3a7d6a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/pressure/mprls0025pa_spi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/pressure/mprls0025pa_spi.c"]}],"references":["https://git.kernel.org/stable/c/72158f9ae29a9e56d0f9704ce461a866feaf9925","https://git.kernel.org/stable/c/664ffdf34c01810085e4d85508b361c3fdd2ab40","https://git.kernel.org/stable/c/9080c7ac30f5f8f8fcb7b27b56df60fea7909c21","https://git.kernel.org/stable/c/1e0ac56c92e26115cbc8cfc639843725cb3a7d6a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46326.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46326","state":"PUBLISHED","datePublished":"2026-06-09T12:25:53.893Z","dateUpdated":"2026-08-05T12:31:21.635Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.112Z"},"containers":{"cna":{"title":"iio: pressure: mprls0025pa: fix spi_transfer struct initialisation","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: pressure: mprls0025pa: fix spi_transfer struct initialisation\n\nMake sure that the spi_transfer struct is zeroed out before use."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"72158f9ae29a9e56d0f9704ce461a866feaf9925","versionType":"git"},{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"664ffdf34c01810085e4d85508b361c3fdd2ab40","versionType":"git"},{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"9080c7ac30f5f8f8fcb7b27b56df60fea7909c21","versionType":"git"},{"version":"a0858f0cd28e822b91376ae288d5548bc1847531","status":"affected","lessThan":"1e0ac56c92e26115cbc8cfc639843725cb3a7d6a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/pressure/mprls0025pa_spi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/pressure/mprls0025pa_spi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/72158f9ae29a9e56d0f9704ce461a866feaf9925"},{"url":"https://git.kernel.org/stable/c/664ffdf34c01810085e4d85508b361c3fdd2ab40"},{"url":"https://git.kernel.org/stable/c/9080c7ac30f5f8f8fcb7b27b56df60fea7909c21"},{"url":"https://git.kernel.org/stable/c/1e0ac56c92e26115cbc8cfc639843725cb3a7d6a"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.4,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The bug is reached only through local kernel interfaces (IIO sysfs reads or buffered IIO character-device access) that invoke mpr_spi_xfer(); there is no network-facing or pre-auth remote code path to this driver.\nAC:L - On any system with the SPI driver bound to a Honeywell MPR sensor, an attacker can trigger the uninitialized spi_transfer on every pressure read with a simple, repeatable sysfs access; no race or attacker-uncontrollable memory layout is required.\nPR:N - IIO in_pressure_raw sysfs attributes are world-readable (0444), so any local unprivileged user can invoke the vulnerable SPI transfer without capabilities or namespace elevation.\nUI:N - Exploitation requires only the attacker reading the sensor sysfs node; no victim interaction such as plugging hardware or mounting filesystems is needed.\nS:U - Impact is confined to kernel memory and SPI subsystem state on the same host; it does not cross a VM, container, or IOMMU security boundary.\nC:H - Stack garbage in spi_transfer fields (especially transfer_list and DMA mapping flags) corrupts SPI core linked lists and mapping state, enabling arbitrary kernel memory reads during exploitation of the resulting corruption primitive.\nI:H - The same uninitialized fields produce out-of-bounds linked-list manipulation and potential erroneous DMA unmap operations, which are classic kernel memory-corruption primitives that can be leveraged for arbitrary write and code execution.\nA:H - Corrupting spi_message transfer lists or SPI/DMA teardown paths can cause immediate kernel oops/panic or sustained denial of service via malformed CS/delay handling on the SPI bus."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:31:21.635Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}