164 lines
7.6 KiB
JSON
164 lines
7.6 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-99097",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.390Z",
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"datePublished": "2026-10-26T14:52:03.824Z",
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"dateUpdated": "2026-10-26T14:52:03.824Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-26T14:52:03.824Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper()\n\ntee_dyn_shm_alloc_helper() derives nr_pages from a caller-supplied size\nand passes it to alloc_pages_exact() without checking it. For size == 0\nnr_pages is 0, and alloc_pages_exact(0) calls get_order(0), which is\ndocumented as undefined and returns BITS_PER_LONG - PAGE_SHIFT. The page\nallocator then trips its order > MAX_PAGE_ORDER warning and fails the\nallocation; on a panic_on_warn kernel that ends the boot.\n\nThis can be triggered by TEE_IOC_SHM_ALLOC with struct\ntee_ioctl_shm_alloc_data where size is 0.\n\nReject a zero page count, as register_shm_helper() already does for the\nregister path."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/tee/tee_shm.c"
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],
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"versions": [
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{
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"version": "cf4441503e20a0c0a36e0a98dcf57de3d3844c91",
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"lessThan": "e5dc7af9c3a5373ee7a84959126e7dfa9e4ad50d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cf4441503e20a0c0a36e0a98dcf57de3d3844c91",
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"lessThan": "65cb86860a80ffc6af897d53f5bd4b1733bca0ec",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cf4441503e20a0c0a36e0a98dcf57de3d3844c91",
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"lessThan": "c2a97703359e25ec7ef8b2b0ef32fb3982add90a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cf4441503e20a0c0a36e0a98dcf57de3d3844c91",
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"lessThan": "b7f925fd5226deb953c8dcdc9677d3fcc2717c00",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/tee/tee_shm.c"
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],
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"versions": [
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{
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"version": "6.10",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.10",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.113",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.57",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.11",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "6.12.113"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "6.18.57"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "7.2.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e5dc7af9c3a5373ee7a84959126e7dfa9e4ad50d"
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},
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{
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"url": "https://git.kernel.org/stable/c/65cb86860a80ffc6af897d53f5bd4b1733bca0ec"
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},
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{
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"url": "https://git.kernel.org/stable/c/c2a97703359e25ec7ef8b2b0ef32fb3982add90a"
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},
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{
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"url": "https://git.kernel.org/stable/c/b7f925fd5226deb953c8dcdc9677d3fcc2717c00"
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}
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],
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"title": "tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |