CVE-2022-50365 (GCVE-0-2022-50365)
Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-01-14 18:42
VLAI?
Title
skbuff: Account for tail adjustment during pull operations
Summary
In the Linux kernel, the following vulnerability has been resolved:
skbuff: Account for tail adjustment during pull operations
Extending the tail can have some unexpected side effects if a program uses
a helper like BPF_FUNC_skb_pull_data to read partial content beyond the
head skb headlen when all the skbs in the gso frag_list are linear with no
head_frag -
kernel BUG at net/core/skbuff.c:4219!
pc : skb_segment+0xcf4/0xd2c
lr : skb_segment+0x63c/0xd2c
Call trace:
skb_segment+0xcf4/0xd2c
__udp_gso_segment+0xa4/0x544
udp4_ufo_fragment+0x184/0x1c0
inet_gso_segment+0x16c/0x3a4
skb_mac_gso_segment+0xd4/0x1b0
__skb_gso_segment+0xcc/0x12c
udp_rcv_segment+0x54/0x16c
udp_queue_rcv_skb+0x78/0x144
udp_unicast_rcv_skb+0x8c/0xa4
__udp4_lib_rcv+0x490/0x68c
udp_rcv+0x20/0x30
ip_protocol_deliver_rcu+0x1b0/0x33c
ip_local_deliver+0xd8/0x1f0
ip_rcv+0x98/0x1a4
deliver_ptype_list_skb+0x98/0x1ec
__netif_receive_skb_core+0x978/0xc60
Fix this by marking these skbs as GSO_DODGY so segmentation can handle
the tail updates accordingly.
Severity ?
5.5 (Medium)
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
162a5a8c3aff15c449e6b38355cdf80ab4f77a5a , < ff3743d00f41d803e6ab9334962b674f3b7fd0cb
(git)
Affected: 55fb612bef7fd237fb70068e2b6ff1cd1543a8ef , < 6ac417d71b80e74b002313fcd73f7e9008e8e457 (git) Affected: 821302dd0c51d29269ef73a595bdff294419e2cd , < 2d59f0ca153e9573ec4f140988c0ccca0eb4181b (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 668dc454bcbd1da73605201ff43f988c70848215 (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 821be5a5ab09a40ba09cb5ba354f18cf7996fea0 (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 8fb773eed4909ef5dc1bbeb3629a337d3336df7e (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 946dd5dc4fcc4123cdfe3942b20012c4448cf89a (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 331615d837f4979eb91a336a223a5c7f7886ecd5 (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 2d7afdcbc9d32423f177ee12b7c93783aea338fb (git) Affected: 92984818ff8cfd97311a5e0ac27f148a00df2b54 (git) |
|||||||
|
|||||||||
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skb_segment+0x63c/0xd2c\\n Call trace:\\n skb_segment+0xcf4/0xd2c\\n __udp_gso_segment+0xa4/0x544\\n udp4_ufo_fragment+0x184/0x1c0\\n inet_gso_segment+0x16c/0x3a4\\n skb_mac_gso_segment+0xd4/0x1b0\\n __skb_gso_segment+0xcc/0x12c\\n udp_rcv_segment+0x54/0x16c\\n udp_queue_rcv_skb+0x78/0x144\\n udp_unicast_rcv_skb+0x8c/0xa4\\n __udp4_lib_rcv+0x490/0x68c\\n udp_rcv+0x20/0x30\\n ip_protocol_deliver_rcu+0x1b0/0x33c\\n ip_local_deliver+0xd8/0x1f0\\n ip_rcv+0x98/0x1a4\\n deliver_ptype_list_skb+0x98/0x1ec\\n __netif_receive_skb_core+0x978/0xc60\\n\\nFix this by marking these skbs as GSO_DODGY so segmentation can handle\\nthe tail updates accordingly.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.337\", \"versionStartIncluding\": \"4.9.194\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.303\", \"versionStartIncluding\": \"4.14.145\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.270\", \"versionStartIncluding\": \"4.19.74\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.229\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.163\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.86\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.16\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.2\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.2.16\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-17T14:56:16.648Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-50365\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:42:58.912Z\", \"dateReserved\": \"2025-09-17T14:53:06.995Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-17T14:56:16.648Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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