159 lines
9.3 KiB
JSON
159 lines
9.3 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-2025-38175",
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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": "2025-04-16T04:51:23.992Z",
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"datePublished": "2025-07-04T10:39:56.392Z",
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"dateUpdated": "2026-08-05T12:00:06.352Z"
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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": "2026-08-05T12:00:06.352Z"
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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\nbinder: fix yet another UAF in binder_devices\n\nCommit e77aff5528a18 (\"binderfs: fix use-after-free in binder_devices\")\naddressed a use-after-free where devices could be released without first\nbeing removed from the binder_devices list. However, there is a similar\npath in binder_free_proc() that was missed:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100\n Write of size 8 at addr ffff0000c773b900 by task umount/467\n CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT\n Hardware name: linux,dummy-virt (DT)\n Call trace:\n binder_remove_device+0xd4/0x100\n binderfs_evict_inode+0x230/0x2f0\n evict+0x25c/0x5dc\n iput+0x304/0x480\n dentry_unlink_inode+0x208/0x46c\n __dentry_kill+0x154/0x530\n [...]\n\n Allocated by task 463:\n __kmalloc_cache_noprof+0x13c/0x324\n binderfs_binder_device_create.isra.0+0x138/0xa60\n binder_ctl_ioctl+0x1ac/0x230\n [...]\n\n Freed by task 215:\n kfree+0x184/0x31c\n binder_proc_dec_tmpref+0x33c/0x4ac\n binder_deferred_func+0xc10/0x1108\n process_one_work+0x520/0xba4\n [...]\n ==================================================================\n\nCall binder_remove_device() within binder_free_proc() to ensure the\ndevice is removed from the binder_devices list before being kfreed."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerability is reached through local operations only — mounting binderfs, the BINDER_CTL_ADD ioctl, opening binder device files, and process teardown. There is no network component.\nAC:L - The attacker fully controls both sides of the lifetime ordering (proc references via open/close and inode eviction via umount), and the bug is reliably reproducible (syzbot Tested-by), so no condition is beyond attacker control.\nPR:L - binderfs is an FS_USERNS_MOUNT filesystem, so an unprivileged user can mount it in a user namespace and drive the binder-control ioctl and device opens without real privileges; on Android, ordinary apps have binder access directly.\nUI:N - The attacker performs all steps (create device, open, trigger release and eviction) entirely on their own; no action from any other user is required.\nS:U - The use-after-free is contained within the kernel's own memory and security authority; it does not cross into a separate security scope such as a VM host or IOMMU boundary.\nC:H - A use-after-free on a re-allocatable heap object lets the attacker place controlled data in the freed slot and read back kernel memory contents, enabling information disclosure.\nI:H - The freed binder_device is written through hlist_del_init after reallocation, giving a write primitive on attacker-controlled heap contents that can be leveraged for further memory corruption and control-flow hijacking.\nA:H - The use-after-free corrupts kernel heap state and reliably triggers a KASAN-detected slab-use-after-free / oops, crashing the kernel."
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}
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]
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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/android/binder.c"
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],
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"versions": [
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{
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"version": "12d909cac1e1c4147cc3417fee804ee12fc6b984",
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"lessThan": "4a7694f499cae5b83412c5281bf2c961f34f2ed6",
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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": "12d909cac1e1c4147cc3417fee804ee12fc6b984",
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"lessThan": "72a726fb5f25fbb31d6060acfb671c1955831245",
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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": "12d909cac1e1c4147cc3417fee804ee12fc6b984",
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"lessThan": "9857af0fcff385c75433f2162c30c62eb912ef6d",
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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/android/binder.c"
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],
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"versions": [
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{
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"version": "6.14",
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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": "6.14",
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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": "6.14.11",
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"lessThanOrEqual": "6.14.*",
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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": "6.15.2",
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"lessThanOrEqual": "6.15.*",
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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": "6.16",
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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": "6.14",
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"versionEndExcluding": "6.14.11"
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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": "6.14",
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"versionEndExcluding": "6.15.2"
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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": "6.14",
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"versionEndExcluding": "6.16"
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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/4a7694f499cae5b83412c5281bf2c961f34f2ed6"
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},
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{
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"url": "https://git.kernel.org/stable/c/72a726fb5f25fbb31d6060acfb671c1955831245"
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},
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{
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"url": "https://git.kernel.org/stable/c/9857af0fcff385c75433f2162c30c62eb912ef6d"
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}
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],
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"title": "binder: fix yet another UAF in binder_devices",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |