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CVE-2022-49026
e100: Fix possible use after free in e100_xmit_prepare
High7.8EPSS 0.24%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: e100: Fix possible use after free in e100_xmit_prepare In e100_xmit_prepare(), if we can't map the skb, then return -ENOMEM, so e100_xmit_frame() will return NETDEV_TX_BUSY and the upper layer will resend the skb. But the skb is already freed, which will cause UAF bug when the upper layer resends the skb. Remove the harmful free.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 5e5d49422dfb035ca9e280cd61d434095c151272 – < b775f37d943966f6f77dca402f5a9dedce502c25
- affected 5e5d49422dfb035ca9e280cd61d434095c151272 – < 9fc27d22cdb9b1fcd754599d216a8992fed280cd
- affected 5e5d49422dfb035ca9e280cd61d434095c151272 – < b46f6144ab89d3d757ead940759c505091626a7d
- affected 5e5d49422dfb035ca9e280cd61d434095c151272 – < 45605c75c52c7ae7bfe902214343aabcfe5ba0ff
- affected 4.3
- unaffected < 4.3
- unaffected 5.10.158 – ≤ 5.10.*
- unaffected 5.15.82 – ≤ 5.15.*
- unaffected 6.0.12 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (4)
- https://git.kernel.org/stable/c/b775f37d943966f6f77dca402f5a9dedce502c25 (opens in a new tab)
- https://git.kernel.org/stable/c/9fc27d22cdb9b1fcd754599d216a8992fed280cd (opens in a new tab)
- https://git.kernel.org/stable/c/b46f6144ab89d3d757ead940759c505091626a7d (opens in a new tab)
- https://git.kernel.org/stable/c/45605c75c52c7ae7bfe902214343aabcfe5ba0ff (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49026)Record last updated .