interconnect: Fix use after free in icc_get() and of_icc_get_by_index()
In the Linux kernel, the following vulnerability has been resolved: interconnect: Fix use after free in icc_get() and of_icc_get_by_index() In of_icc_get_by_index() and icc_get(), if the dynamic allocation for path->name fails via kasprintf(), the error handling path directly calls kfree(path) to free the path object and returns an error. However, prior to this point, path_find() calls path_init(), which already links the path's requests into the req_list of the respective interconnect nodes via hlist_add_head(). Directly invoking kfree(path) leaves dangling pointers in the hlist. A subsequent call to icc_get() or icc_set_bw() will traverse or modify these corrupted lists, triggering a slab use afterfree. KASAN report showing the vulnerability when reproducing via debugfs: BUG: KASAN: slab-use-after-free in path_find+0x6f8/0xcfc Write of size 8 at addr fff000000d43f748 by task sh/1 ... Call trace: kasan_report+0xac/0xfc path_find+0x6f8/0xcfc icc_get+0x148/0x380 icc_get_set+0xf8/0x2d0 ... Freed by task 1: kfree+0x1a0/0x4a4 icc_get+0x2cc/0x380 icc_get_set+0xf8/0x2d0 Fix this by replacing kfree(path) with the proper teardown function, icc_put(path), which safely removes the requests from the req_list using hlist_del() and drops the provider usage references before freeing the memory. Additionally, in icc_get(), ensure that the icc_lock mutex is released prior to calling icc_put(path) to avoid a deadlock, as icc_put() internally acquires the same lock.
CVE-2026-81008
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-81008
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "03c3af594dea9196cf6ca70d914b42aa8c873c35",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "d4d73decdb9a44a248b1cbd04ed6f334df544d9c",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "9a671125d4228357e5b929733c4593d27a273749",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "fedea72e8f312fe7d0c6cb19353e61d2d5643b11",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "a4e9aa7907ade87d1d96853d14e05dcf682f8363",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "db8147c5d5ad2cfa21c2be566f95981b41b05de6",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "d715d19cfcfe99f361adb05cefc143a95d400b87",
"versionType": "git"
},
{
"status": "affected",
"version": "3791163602f7140011a8dc1691cfe6ec0cb1ef07",
"lessThan": "25c7e242aca084fdc1098248194032317dca625d",
"versionType": "git"
}
],
"programFiles": [
"drivers/interconnect/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/interconnect/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-81008
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34961 · Revision 1
- Added to Heist Feed
- Publisher date