CVE-2022-50365: skbuff: Account for tail adjustment during pull operations
Vulnerability summary
CVE-2022-50365 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 47.5% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 17-09-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.57%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.56% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu119 products
- linux< 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 162a5a8c3aff15c449e6b38355cdf80ab4f77a5a, < ff3743d00f41d803e6ab9334962b674f3b7fd0cb | ≥ 55fb612bef7fd237fb70068e2b6ff1cd1543a8ef, < 6ac417d71b80e74b002313fcd73f7e9008e8e457 | ≥ 821302dd0c51d29269ef73a595bdff294419e2cd, < 2d59f0ca153e9573ec4f140988c0ccca0eb4181b | ≥ 3dcbdb134f329842a38f0e6797191b885ab00a00, < 668dc454bcbd1da73605201ff43f988c70848215 | ≥ 3dcbdb134f329842a38f0e6797191b885ab00a00, < 821be5a5ab09a40ba09cb5ba354f18cf7996fea0 | ≥ 3dcbdb134f329842a38f0e6797191b885ab00a00, < 8fb773eed4909ef5dc1bbeb3629a337d3336df7e | ≥ 3dcbdb134f329842a38f0e6797191b885ab00a00, < 946dd5dc4fcc4123cdfe3942b20012c4448cf89a | ≥ 3dcbdb134f329842a38f0e6797191b885ab00a00, < 331615d837f4979eb91a336a223a5c7f7886ecd5 | ≥ 3dcbdb134f329842a38f0e6797191b885ab00a00, < 2d7afdcbc9d32423f177ee12b7c93783aea338fb | 92984818ff8cfd97311a5e0ac27f148a00df2b54 | ≥ 4.9.194, < 4.9.337 | ≥ 4.14.145, < 4.14.303 | ≥ 4.19.74, < 4.19.270 | ≥ 5.2.16, < 5.3 | 5.3
- linux_kernel≥ 4.9.194, < 4.9.337 | ≥ 4.14.145, < 4.14.303 | ≥ 4.19.74, < 4.19.270 | ≥ 5.2.16, < 5.3 | ≥ 5.3.1, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.86 | ≥ 5.16, < 6.0.16 | ≥ 6.1, < 6.1.2 | 5.3
Debian1 product
- linux< 6.1.4-1
3 vendors · 122 products
