In the Linux kernel, the following vulnerability has been resolved:
mm: prevent derefencing NULL ptr in pfn_section_valid()
Commit 5ec8e8ea8b77 (“mm/sparsemem: fix race in accessing
memory_section->usage”) changed pfn_section_valid() to add a READ_ONCE()
call around “ms->usage” to fix a race with section_deactivate() where
ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough
to prevent NULL pointer dereference. We need to check its value before
dereferencing it.
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"include/linux/mmzone.h"
],
"versions": [
{
"version": "90ad17575d26",
"lessThan": "0100aeb8a12d",
"status": "affected",
"versionType": "git"
},
{
"version": "b448de2459b6",
"lessThan": "bc17f2377818",
"status": "affected",
"versionType": "git"
},
{
"version": "68ed9e333240",
"lessThan": "941e81618566",
"status": "affected",
"versionType": "git"
},
{
"version": "70064241f222",
"lessThan": "797323d1cf92",
"status": "affected",
"versionType": "git"
},
{
"version": "5ec8e8ea8b77",
"lessThan": "adccdf702b4e",
"status": "affected",
"versionType": "git"
},
{
"version": "5ec8e8ea8b77",
"lessThan": "82f0b6f041fa",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"include/linux/mmzone.h"
],
"versions": [
{
"version": "6.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.8",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.222",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.163",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.100",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.41",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9.10",
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.10",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982
git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7
git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e
git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509
git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63
git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503