VULN/vuln-cve
1
0 Fork 0
Code Pull Requests Actions Activity
Files
c1444140e59c61ba154436ea0cd6284d8a97c3f0
vuln-cve/data/2025/22xxx/CVE-2025-22049.json
T

237 lines
13 KiB
JSON
Raw Blame History

{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-22049",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-12-29T08:45:45.811Z",
"datePublished": "2025-04-16T14:12:08.317Z",
"dateUpdated": "2026-08-05T11:56:21.806Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-05T11:56:21.806Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Increase ARCH_DMA_MINALIGN up to 16\n\nARCH_DMA_MINALIGN is 1 by default, but some LoongArch-specific devices\n(such as APBDMA) require 16 bytes alignment. When the data buffer length\nis too small, the hardware may make an error writing cacheline. Thus, it\nis dangerous to allocate a small memory buffer for DMA. It's always safe\nto define ARCH_DMA_MINALIGN as L1_CACHE_BYTES but unnecessary (kmalloc()\nneed small memory objects). Therefore, just increase it to 16."
}
],
"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 vulnerable path is entered by triggering a DMA transaction on an APBDMA-backed peripheral (I2S/PCM device node, APB slave I/O) from a local syscall/ioctl; no network protocol handler or remote peer data reaches this code. The APBDMA controller drives no network device, so remote or adjacent reach is not defensible.\nAC:L - There is no race and no condition outside the attacker's control — the 16-byte hardware write granule versus the 8-byte `KMALLOC_MIN_SIZE` mismatch is deterministic on every affected transfer, and the attacker can repeat the I/O arbitrarily while heap-spraying to control which slab object sits adjacent to the undersized `kmalloc-8` buffer.\nPR:L - An unprivileged local account suffices — opening the sound/APB peripheral device node and starting a transfer requires no capability check, and on the embedded Loongson-2K systems where APBDMA is present these nodes are routinely accessible to ordinary users. No real root in the initial namespace is needed.\nUI:N - The attacker initiates the DMA transfer directly through their own file descriptor; no victim must mount a filesystem, open a file, or take any other action.\nS:U - The APBDMA engine is programmed by trusted in-kernel driver code and the resulting overrun lands in the kernel's own slab heap, so the corruption stays within the kernel's security authority — no IOMMU, hypervisor, or sandbox boundary is crossed.\nC:H - In the memory→device direction the 16-byte granule reads past the end of the undersized `kmalloc()` object and transmits adjacent kernel heap contents out to the peripheral, and the resulting heap corruption is a general primitive that can be leveraged to disclose kernel memory.\nI:H - In the device→memory direction the hardware writes up to 15 bytes beyond the allocated object, overwriting neighbouring slab objects with device-supplied data — an out-of-bounds heap write that, combined with groomable `kmalloc-8` neighbours, is exploitable for control-flow-relevant corruption.\nA:H - Silent corruption of adjacent slab objects — including list pointers and object headers of unrelated allocations — reliably leads to slab corruption reports, oopses, and kernel panics, and nothing (no bounce buffer, since LoongArch devices are treated as coherent) prevents it from recurring on every transfer."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"arch/loongarch/include/asm/cache.h"
],
"versions": [
{
"version": "fa96b57c149061f71a70bd6582d995f6424fbbf4",
"lessThan": "f39af67f03b564b763b06e44cb960c10a382d54a",
"status": "affected",
"versionType": "git"
},
{
"version": "fa96b57c149061f71a70bd6582d995f6424fbbf4",
"lessThan": "279ec25c2df49fba1cd9488f2ddd045d9cb2112e",
"status": "affected",
"versionType": "git"
},
{
"version": "fa96b57c149061f71a70bd6582d995f6424fbbf4",
"lessThan": "1d0def2d1658666ec1f32c9495df60e7411e3c82",
"status": "affected",
"versionType": "git"
},
{
"version": "fa96b57c149061f71a70bd6582d995f6424fbbf4",
"lessThan": "bfff341cac7c650e6ca8d10503725992f5564d0f",
"status": "affected",
"versionType": "git"
},
{
"version": "fa96b57c149061f71a70bd6582d995f6424fbbf4",
"lessThan": "8b82aea3666f8f2c78f86148d78aea99c46e0f82",
"status": "affected",
"versionType": "git"
},
{
"version": "fa96b57c149061f71a70bd6582d995f6424fbbf4",
"lessThan": "4103cfe9dcb88010ae4911d3ff417457d1b6a720",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"arch/loongarch/include/asm/cache.h"
],
"versions": [
{
"version": "5.19",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.19",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.134",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.87",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.23",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.13.11",
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.14.2",
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.15",
"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": "5.19",
"versionEndExcluding": "6.1.134"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.6.87"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.12.23"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.13.11"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.14.2"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "6.15"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a"
},
{
"url": "https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e"
},
{
"url": "https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82"
},
{
"url": "https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f"
},
{
"url": "https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82"
},
{
"url": "https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720"
}
],
"title": "LoongArch: Increase ARCH_DMA_MINALIGN up to 16",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T19:41:31.511Z"
}
}
]
}
}
View Git Blame Copy Permalink