{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38090", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.982Z", "datePublished": "2025-06-30T07:29:45.565Z", "dateUpdated": "2026-08-05T11:59:26.672Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:59:26.672Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/rapidio/rio_cm.c: prevent possible heap overwrite\n\nIn\n\nriocm_cdev_ioctl(RIO_CM_CHAN_SEND)\n -> cm_chan_msg_send()\n -> riocm_ch_send()\n\ncm_chan_msg_send() checks that userspace didn't send too much data but\nriocm_ch_send() failed to check that userspace sent sufficient data. The\nresult is that riocm_ch_send() can write to fields in the rio_ch_chan_hdr\nwhich were outside the bounds of the space which cm_chan_msg_send()\nallocated.\n\nAddress this by teaching riocm_ch_send() to check that the entire\nrio_ch_chan_hdr was copied in from userspace." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The overflow is triggered through the `RIO_CM_CHAN_SEND` ioctl on the `/dev/rio_cm` character device, requiring local access to the system; no remote peer input is needed to reach the vulnerable write.\nAC:L - The attacker directly chooses `msg.size` (any value 1-19) to control both the slab cache and the overflow offset, the write is unconditional and deterministic with no race involved, and a connected channel is reachable either by the attacker's own connect/accept or by using another process's channel via the unchecked global channel idr.\nPR:L - The rio_cm driver performs no `capable()`/`CAP_*` checks anywhere in its open or ioctl paths, so any unprivileged local user able to open `/dev/rio_cm` can issue the malicious send, and the send path does not even verify that the target channel belongs to the caller's file descriptor.\nUI:N - Exploitation requires only the attacker's own ioctl sequence (create/connect or reuse an existing channel, then send); no action by any other user is needed.\nS:U - The heap corruption occurs in kernel slab memory within the same security authority; there is no crossing of a VM, IOMMU, or other trust boundary.\nC:H - The controlled out-of-bounds write into general-purpose `kmalloc-8`/`kmalloc-16` objects can corrupt adjacent structures (length/size fields, pointers, freelist metadata), which is leverageable into arbitrary kernel memory disclosure.\nI:H - This is a heap out-of-bounds write of up to 17 bytes with attacker-selected target cache and partially attacker-controlled content, a classic primitive for corrupting adjacent kernel objects and escalating to arbitrary write/code execution.\nA:H - Overwriting adjacent slab objects and SLUB freelist data reliably produces kernel oops/panic or list corruption, and the ioctl can be repeated at will to crash the system." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/rapidio/rio_cm.c" ], "versions": [ { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "c03ddc183249f03fc7e057e02cae6f89144d0123", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "58f664614f8c3d6142ab81ae551e466dc6e092e8", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "ecf5ee280b702270afb02f61b299d3dfe3ec7730", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "1921781ec4a8824bd0c520bf9363e28a880d14ec", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "6d5c6711a55c35ce09b90705546050408d9d4b61", "status": "affected", "versionType": "git" }, { "version": "b6e8d4aa1110306378af0f3472a6b85a1f039a16", "lessThan": "50695153d7ddde3b1696dbf0085be0033bf3ddb3", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/rapidio/rio_cm.c" ], "versions": [ { "version": "4.8", "status": "affected" }, { "version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.295", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.239", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.186", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.142", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.95", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.35", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.4", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.4.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.239" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.15.186" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1.142" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.6.95" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.12.35" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.15.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6" }, { "url": "https://git.kernel.org/stable/c/c03ddc183249f03fc7e057e02cae6f89144d0123" }, { "url": "https://git.kernel.org/stable/c/58f664614f8c3d6142ab81ae551e466dc6e092e8" }, { "url": "https://git.kernel.org/stable/c/ecf5ee280b702270afb02f61b299d3dfe3ec7730" }, { "url": "https://git.kernel.org/stable/c/1921781ec4a8824bd0c520bf9363e28a880d14ec" }, { "url": "https://git.kernel.org/stable/c/1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53" }, { "url": "https://git.kernel.org/stable/c/6d5c6711a55c35ce09b90705546050408d9d4b61" }, { "url": "https://git.kernel.org/stable/c/50695153d7ddde3b1696dbf0085be0033bf3ddb3" } ], "title": "drivers/rapidio/rio_cm.c: prevent possible heap overwrite", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:33:59.041Z" } } ] } }