In the Linux kernel, the following vulnerability has been resolved:
block: fix q->blkg_list corruption during disk rebind
Multiple gendisk instances can allocated/added for single request queue
in case of disk rebind. blkg may still stay in q->blkg_list when calling
blkcg_init_disk() for rebind, then q->blkg_list becomes corrupted.
Fix the list corruption issue by:
The list corruption should be started since commit f1c006f1c685 (“blk-cgroup:
synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()”)
which delays removing blkg from q->blkg_list into blkg_free_workfn().
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"block/blk-cgroup.c",
"block/blk-cgroup.h",
"block/blk-core.c"
],
"versions": [
{
"version": "1059699f87eb",
"lessThan": "740ffad95ca8",
"status": "affected",
"versionType": "git"
},
{
"version": "1059699f87eb",
"lessThan": "858c489d81d6",
"status": "affected",
"versionType": "git"
},
{
"version": "1059699f87eb",
"lessThan": "8b8ace080319",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"block/blk-cgroup.c",
"block/blk-cgroup.h",
"block/blk-core.c"
],
"versions": [
{
"version": "5.18",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.18",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.28",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8.7",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]