In the Linux kernel, the following vulnerability has been resolved:
fuse: Initialize beyond-EOF page contents before setting uptodate
fuse_notify_store(), unlike fuse_do_readpage(), does not enable page
zeroing (because it can be used to change partial page contents).
So fuse_notify_store() must be more careful to fully initialize page
contents (including parts of the page that are beyond end-of-file)
before marking the page uptodate.
The current code can leave beyond-EOF page contents uninitialized, which
makes these uninitialized page contents visible to userspace via mmap().
This is an information leak, but only affects systems which do not
enable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the
corresponding kernel command line parameter).
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/fuse/dev.c"
],
"versions": [
{
"version": "a1d75f258230",
"lessThan": "49934861514d",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "33168db352c7",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "4690e2171f65",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "8c78303eafbf",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "831433527773",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "ac42e0f0eb66",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "18a067240817",
"status": "affected",
"versionType": "git"
},
{
"version": "a1d75f258230",
"lessThan": "3c0da3d163eb",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/fuse/dev.c"
],
"versions": [
{
"version": "2.6.36",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.36",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.321",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.283",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.225",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.166",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.107",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.48",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.10.7",
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.11",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5
git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e
git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9
git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6
git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a
git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4
git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9
git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6