do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
In the Linux kernel, the following vulnerability has been resolved: do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak syzbot identified a kernel information leak vulnerability in do_sys_name_to_handle() and issued the following report [1]. [1] "BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x100 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] do_sys_name_to_handle fs/fhandle.c:73 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0x121/0x3c0 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] do_sys_name_to_handle fs/fhandle.c:39 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Bytes 18-19 of 20 are uninitialized Memory access of size 20 starts at ffff888128a46380 Data copied to user address 0000000020000240" Per Chuck Lever's suggestion, use kzalloc() instead of
CVE-2024-26901
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-2024-26901
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": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "cde76b3af247f615447bcfecf610bb76c3529126",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "423b6bdf19bbc5e1f7e7461045099917378f7e71",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "e6450d5e46a737a008b4885aa223486113bf0ad6",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "c1362eae861db28b1608b9dc23e49634fe87b63b",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "cba138f1ef37ec6f961baeab62f312dedc7cf730",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "bf9ec1b24ab4e94345aa1c60811dd329f069c38b",
"versionType": "git"
},
{
"status": "affected",
"version": "990d6c2d7aee921e3bce22b2d6a750fd552262be",
"lessThan": "3948abaa4e2be938ccdfc289385a27342fb13d43",
"versionType": "git"
}
],
"programFiles": [
"fs/fhandle.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.39"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.39",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.311",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.273",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.214",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.153",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.83",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.23",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.7.11",
"versionType": "semver",
"lessThanOrEqual": "6.7.*"
},
{
"status": "unaffected",
"version": "6.8.2",
"versionType": "semver",
"lessThanOrEqual": "6.8.*"
},
{
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/fhandle.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-26901
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26453 · Revision 1
- Added to Heist Feed
- Publisher date