CVE-2024-53216

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-53216
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53216.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-53216
Downstream
Related
Published
2024-12-27T13:50:01.869Z
Modified
2025-11-20T07:23:41.120561Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
nfsd: release svc_expkey/svc_export with rcu_work
Details

In the Linux kernel, the following vulnerability has been resolved:

nfsd: release svcexpkey/svcexport with rcu_work

The last reference for cache_head can be reduced to zero in c_show and e_show(using rcu_read_lock and rcu_read_unlock). Consequently, svc_export_put and expkey_put will be invoked, leading to two issues:

  1. The svc_export_put will directly free ex_uuid. However, e_show/c_show will access ex_uuid after cache_put, which can trigger a use-after-free issue, shown below.

    ================================================================== BUG: KASAN: slab-use-after-free in svcexportshow+0x362/0x430 [nfsd] Read of size 1 at addr ff11000010fdc120 by task cat/870

    CPU: 1 UID: 0 PID: 870 Comm: cat Not tainted 6.12.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: <TASK> dumpstacklvl+0x53/0x70 printaddressdescription.constprop.0+0x2c/0x3a0 printreport+0xb9/0x280 kasanreport+0xae/0xe0 svcexportshow+0x362/0x430 [nfsd] cshow+0x161/0x390 [sunrpc] seqreaditer+0x589/0x770 seqread+0x1e5/0x270 procregread+0xe1/0x140 vfsread+0x125/0x530 ksysread+0xc1/0x160 dosyscall64+0x5f/0x170 entrySYSCALL64afterhwframe+0x76/0x7e

    Allocated by task 830: kasansavestack+0x20/0x40 kasansavetrack+0x14/0x30 _kasankmalloc+0x8f/0xa0 _kmallocnodetrackcallernoprof+0x1bc/0x400 kmemdupnoprof+0x22/0x50 svcexportparse+0x8a9/0xb80 [nfsd] cachedodowncall+0x71/0xa0 [sunrpc] cachewriteprocfs+0x8e/0xd0 [sunrpc] procregwrite+0xe1/0x140 vfswrite+0x1a5/0x6d0 ksyswrite+0xc1/0x160 dosyscall64+0x5f/0x170 entrySYSCALL64afterhwframe+0x76/0x7e

    Freed by task 868: kasansavestack+0x20/0x40 kasansavetrack+0x14/0x30 kasansavefreeinfo+0x3b/0x60 _kasanslabfree+0x37/0x50 kfree+0xf3/0x3e0 svcexportput+0x87/0xb0 [nfsd] cachepurge+0x17f/0x1f0 [sunrpc] nfsddestroyserv+0x226/0x2d0 [nfsd] nfsdsvc+0x125/0x1e0 [nfsd] writethreads+0x16a/0x2a0 [nfsd] nfsctltransactionwrite+0x74/0xa0 [nfsd] vfswrite+0x1a5/0x6d0 ksyswrite+0xc1/0x160 dosyscall64+0x5f/0x170 entrySYSCALL64after_hwframe+0x76/0x7e

  2. We cannot sleep while using rcu_read_lock/rcu_read_unlock. However, svc_export_put/expkey_put will call path_put, which subsequently triggers a sleeping operation due to the following dput.

    ============================= WARNING: suspicious RCU usage 5.10.0-dirty #141 Not tainted

... Call Trace: dumpstack+0x9a/0xd0 _mightsleep+0x231/0x240 dput+0x39/0x600 pathput+0x1b/0x30 svcexportput+0x17/0x80 eshow+0x1c9/0x200 seqreaditer+0x63f/0x7c0 seqread+0x226/0x2d0 vfsread+0x113/0x2c0 ksysread+0xc9/0x170 dosyscall64+0x33/0x40 entrySYSCALL64after_hwframe+0x67/0xd1

Fix these issues by using rcu_work to help release svc_expkey/svc_export. This approach allows for an asynchronous context to invoke path_put and also facilitates the freeing of uuid/exp/key after an RCU grace period.

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9ceddd9da13434a5906255c0fc528c385aded283
Fixed
bd8524148dd8c123334b066faa90590ba2ef8e6f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9ceddd9da13434a5906255c0fc528c385aded283
Fixed
2e4854599200f4d021df8ae17e69221d7c149f3e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9ceddd9da13434a5906255c0fc528c385aded283
Fixed
ad4363a24a5746b257c0beb5d8cc68f9b62c173f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9ceddd9da13434a5906255c0fc528c385aded283
Fixed
f8c989a0c89a75d30f899a7cabdc14d72522bb8d

Affected versions

v4.*

v4.19
v4.19-rc6
v4.19-rc7
v4.19-rc8
v4.20
v4.20-rc1
v4.20-rc2
v4.20-rc3
v4.20-rc4
v4.20-rc5
v4.20-rc6
v4.20-rc7

v5.*

v5.0
v5.0-rc1
v5.0-rc2
v5.0-rc3
v5.0-rc4
v5.0-rc5
v5.0-rc6
v5.0-rc7
v5.0-rc8
v5.1
v5.1-rc1
v5.1-rc2
v5.1-rc3
v5.1-rc4
v5.1-rc5
v5.1-rc6
v5.1-rc7
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.2
v5.2-rc1
v5.2-rc2
v5.2-rc3
v5.2-rc4
v5.2-rc5
v5.2-rc6
v5.2-rc7
v5.3
v5.3-rc1
v5.3-rc2
v5.3-rc3
v5.3-rc4
v5.3-rc5
v5.3-rc6
v5.3-rc7
v5.3-rc8
v5.4
v5.4-rc1
v5.4-rc2
v5.4-rc3
v5.4-rc4
v5.4-rc5
v5.4-rc6
v5.4-rc7
v5.4-rc8
v5.5
v5.5-rc1
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8

v6.*

v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.11.1
v6.11.10
v6.11.2
v6.11.3
v6.11.4
v6.11.5
v6.11.6
v6.11.7
v6.11.8
v6.11.9
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.44
v6.6.45
v6.6.46
v6.6.47
v6.6.48
v6.6.49
v6.6.5
v6.6.50
v6.6.51
v6.6.52
v6.6.53
v6.6.54
v6.6.55
v6.6.56
v6.6.57
v6.6.58
v6.6.59
v6.6.6
v6.6.60
v6.6.61
v6.6.62
v6.6.63
v6.6.7
v6.6.8
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

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        "signature_version": "v1",
        "id": "CVE-2024-53216-fc1bf219"
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]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.20.0
Fixed
6.6.64
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.11.11
Type
ECOSYSTEM
Events
Introduced
6.12.0
Fixed
6.12.2