CVE-2025-22024 (GCVE-0-2025-22024)
Vulnerability from cvelistv5 – Published: 2025-04-16 14:11 – Updated: 2025-10-01 17:05
VLAI?
Title
nfsd: fix management of listener transports
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix management of listener transports
Currently, when no active threads are running, a root user using nfsdctl
command can try to remove a particular listener from the list of previously
added ones, then start the server by increasing the number of threads,
it leads to the following problem:
[ 158.835354] refcount_t: addition on 0; use-after-free.
[ 158.835603] WARNING: CPU: 2 PID: 9145 at lib/refcount.c:25 refcount_warn_saturate+0x160/0x1a0
[ 158.836017] Modules linked in: rpcrdma rdma_cm iw_cm ib_cm ib_core nfsd auth_rpcgss nfs_acl lockd grace overlay isofs uinput snd_seq_dummy snd_hrtimer nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables qrtr sunrpc vfat fat uvcvideo videobuf2_vmalloc videobuf2_memops uvc videobuf2_v4l2 videodev videobuf2_common snd_hda_codec_generic mc e1000e snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore sg loop dm_multipath dm_mod nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vmw_vmci vsock xfs libcrc32c crct10dif_ce ghash_ce vmwgfx sha2_ce sha256_arm64 sr_mod sha1_ce cdrom nvme drm_client_lib drm_ttm_helper ttm nvme_core drm_kms_helper nvme_auth drm fuse
[ 158.840093] CPU: 2 UID: 0 PID: 9145 Comm: nfsd Kdump: loaded Tainted: G B W 6.13.0-rc6+ #7
[ 158.840624] Tainted: [B]=BAD_PAGE, [W]=WARN
[ 158.840802] Hardware name: VMware, Inc. VMware20,1/VBSA, BIOS VMW201.00V.24006586.BA64.2406042154 06/04/2024
[ 158.841220] pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[ 158.841563] pc : refcount_warn_saturate+0x160/0x1a0
[ 158.841780] lr : refcount_warn_saturate+0x160/0x1a0
[ 158.842000] sp : ffff800089be7d80
[ 158.842147] x29: ffff800089be7d80 x28: ffff00008e68c148 x27: ffff00008e68c148
[ 158.842492] x26: ffff0002e3b5c000 x25: ffff600011cd1829 x24: ffff00008653c010
[ 158.842832] x23: ffff00008653c000 x22: 1fffe00011cd1829 x21: ffff00008653c028
[ 158.843175] x20: 0000000000000002 x19: ffff00008653c010 x18: 0000000000000000
[ 158.843505] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[ 158.843836] x14: 0000000000000000 x13: 0000000000000001 x12: ffff600050a26493
[ 158.844143] x11: 1fffe00050a26492 x10: ffff600050a26492 x9 : dfff800000000000
[ 158.844475] x8 : 00009fffaf5d9b6e x7 : ffff000285132493 x6 : 0000000000000001
[ 158.844823] x5 : ffff000285132490 x4 : ffff600050a26493 x3 : ffff8000805e72bc
[ 158.845174] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000098588000
[ 158.845528] Call trace:
[ 158.845658] refcount_warn_saturate+0x160/0x1a0 (P)
[ 158.845894] svc_recv+0x58c/0x680 [sunrpc]
[ 158.846183] nfsd+0x1fc/0x348 [nfsd]
[ 158.846390] kthread+0x274/0x2f8
[ 158.846546] ret_from_fork+0x10/0x20
[ 158.846714] ---[ end trace 0000000000000000 ]---
nfsd_nl_listener_set_doit() would manipulate the list of transports of
server's sv_permsocks and close the specified listener but the other
list of transports (server's sp_xprts list) would not be changed leading
to the problem above.
Instead, determined if the nfsdctl is trying to remove a listener, in
which case, delete all the existing listener transports and re-create
all-but-the-removed ones.
Severity ?
5.5 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
16a471177496c8e04a9793812c187a2c1a2192fa , < a84c80515ca8a0cdf6d06f1b6ca721224b08453e
(git)
Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 052a34f093fb940a145493d1438e7abbfe507cdd (git) Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < 0f42df0ab2b11ea6b2884bdaf6dbc3be6dde7e82 (git) Affected: 16a471177496c8e04a9793812c187a2c1a2192fa , < d093c90892607be505e801469d6674459e69ab89 (git) |
||
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"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-22024\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T17:05:34.999915Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:40:11.099Z\"}}], \"cna\": {\"title\": \"nfsd: fix management of listener transports\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"16a471177496c8e04a9793812c187a2c1a2192fa\", \"lessThan\": \"a84c80515ca8a0cdf6d06f1b6ca721224b08453e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"16a471177496c8e04a9793812c187a2c1a2192fa\", \"lessThan\": \"052a34f093fb940a145493d1438e7abbfe507cdd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"16a471177496c8e04a9793812c187a2c1a2192fa\", \"lessThan\": \"0f42df0ab2b11ea6b2884bdaf6dbc3be6dde7e82\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"16a471177496c8e04a9793812c187a2c1a2192fa\", \"lessThan\": \"d093c90892607be505e801469d6674459e69ab89\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/nfsd/nfsctl.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.12.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.14.*\"}, {\"status\": \"unaffected\", \"version\": \"6.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nfsd/nfsctl.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a84c80515ca8a0cdf6d06f1b6ca721224b08453e\"}, {\"url\": \"https://git.kernel.org/stable/c/052a34f093fb940a145493d1438e7abbfe507cdd\"}, {\"url\": \"https://git.kernel.org/stable/c/0f42df0ab2b11ea6b2884bdaf6dbc3be6dde7e82\"}, {\"url\": \"https://git.kernel.org/stable/c/d093c90892607be505e801469d6674459e69ab89\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfsd: fix management of listener transports\\n\\nCurrently, when no active threads are running, a root user using nfsdctl\\ncommand can try to remove a particular listener from the list of previously\\nadded ones, then start the server by increasing the number of threads,\\nit leads to the following problem:\\n\\n[ 158.835354] refcount_t: addition on 0; use-after-free.\\n[ 158.835603] WARNING: CPU: 2 PID: 9145 at lib/refcount.c:25 refcount_warn_saturate+0x160/0x1a0\\n[ 158.836017] Modules linked in: rpcrdma rdma_cm iw_cm ib_cm ib_core nfsd auth_rpcgss nfs_acl lockd grace overlay isofs uinput snd_seq_dummy snd_hrtimer nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables qrtr sunrpc vfat fat uvcvideo videobuf2_vmalloc videobuf2_memops uvc videobuf2_v4l2 videodev videobuf2_common snd_hda_codec_generic mc e1000e snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore sg loop dm_multipath dm_mod nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vmw_vmci vsock xfs libcrc32c crct10dif_ce ghash_ce vmwgfx sha2_ce sha256_arm64 sr_mod sha1_ce cdrom nvme drm_client_lib drm_ttm_helper ttm nvme_core drm_kms_helper nvme_auth drm fuse\\n[ 158.840093] CPU: 2 UID: 0 PID: 9145 Comm: nfsd Kdump: loaded Tainted: G B W 6.13.0-rc6+ #7\\n[ 158.840624] Tainted: [B]=BAD_PAGE, [W]=WARN\\n[ 158.840802] Hardware name: VMware, Inc. VMware20,1/VBSA, BIOS VMW201.00V.24006586.BA64.2406042154 06/04/2024\\n[ 158.841220] pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\\n[ 158.841563] pc : refcount_warn_saturate+0x160/0x1a0\\n[ 158.841780] lr : refcount_warn_saturate+0x160/0x1a0\\n[ 158.842000] sp : ffff800089be7d80\\n[ 158.842147] x29: ffff800089be7d80 x28: ffff00008e68c148 x27: ffff00008e68c148\\n[ 158.842492] x26: ffff0002e3b5c000 x25: ffff600011cd1829 x24: ffff00008653c010\\n[ 158.842832] x23: ffff00008653c000 x22: 1fffe00011cd1829 x21: ffff00008653c028\\n[ 158.843175] x20: 0000000000000002 x19: ffff00008653c010 x18: 0000000000000000\\n[ 158.843505] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\\n[ 158.843836] x14: 0000000000000000 x13: 0000000000000001 x12: ffff600050a26493\\n[ 158.844143] x11: 1fffe00050a26492 x10: ffff600050a26492 x9 : dfff800000000000\\n[ 158.844475] x8 : 00009fffaf5d9b6e x7 : ffff000285132493 x6 : 0000000000000001\\n[ 158.844823] x5 : ffff000285132490 x4 : ffff600050a26493 x3 : ffff8000805e72bc\\n[ 158.845174] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000098588000\\n[ 158.845528] Call trace:\\n[ 158.845658] refcount_warn_saturate+0x160/0x1a0 (P)\\n[ 158.845894] svc_recv+0x58c/0x680 [sunrpc]\\n[ 158.846183] nfsd+0x1fc/0x348 [nfsd]\\n[ 158.846390] kthread+0x274/0x2f8\\n[ 158.846546] ret_from_fork+0x10/0x20\\n[ 158.846714] ---[ end trace 0000000000000000 ]---\\n\\nnfsd_nl_listener_set_doit() would manipulate the list of transports of\\nserver\u0027s sv_permsocks and close the specified listener but the other\\nlist of transports (server\u0027s sp_xprts list) would not be changed leading\\nto the problem above.\\n\\nInstead, determined if the nfsdctl is trying to remove a listener, in\\nwhich case, delete all the existing listener transports and re-create\\nall-but-the-removed ones.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.23\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.11\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14.2\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.15\", \"versionStartIncluding\": \"6.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-26T05:16:50.917Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2025-22024\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T17:05:37.618Z\", \"dateReserved\": \"2024-12-29T08:45:45.807Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-04-16T14:11:45.975Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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