CVE-2024-41091: tun: add missing verification for short frame
Vulnerability summary
CVE-2024-41091 is a high (CVSS 8.8) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.3% of scored vulnerabilities.
Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 55 · Related 32Timeline
- 29-07-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
EPSS trend
Probability
0.26%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.26% 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 causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu125 products
- linux< 5.4.0-200.220 | < 5.15.0-125.135 | < 6.8.0-48.48
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1135.145 | < 5.15.0-1072.78 | < 6.8.0-1018.20
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 32b0aaba5dbc85816898167d9b5d45a22eae82e9 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 6100e0237204890269e3f934acfc50d35fd6f319 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < d5ad89b7d01ed4e66fd04734fc63d6e78536692a | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 8418f55302fa1d2eeb73e16e345167e545c598a5 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 049584807f1d797fc3078b68035450a9769eb5c3 | 4.20
- linux_kernel≥ 4.20, < 5.4.281 | ≥ 5.5, < 5.10.223 | ≥ 5.11, < 5.15.164 | ≥ 5.16, < 6.1.102 | ≥ 6.2, < 6.6.43 | ≥ 6.7, < 6.9.12 | ≥ 6.10, < 6.10.2
Debian1 product
- linux< 6.1.106-1 | < 6.9.12-1
3 vendors · 128 products
