CVE-2025-71093: Linux kernel · e1000: fix OOB in e1000_tbi_should_accept()
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 9.1 Critical · fixed in 5.15.0-1103.110~20.04.1 : patch Linux kernel as a priority.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1103.110~20.04.1, 5.15.0-1110.119~20.04.1, 5.15.0-1103.112~20.04.1 +70
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 13 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux@6.17.0-22.22?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws@6.17.0-1012.12?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure@6.17.0-1013.13?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp@6.17.0-1012.12?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle@6.17.0-1011.11?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied to affected linux-aws kernel versions. The fix rejects frames with zero length or length exceeding the RX buffer size, preventing out-of-bounds memory access. Users should update to the fixed kernel versions as per the Ubuntu security advisory USN-8096-1. No additional mitigation actions are required beyond applying the official kernel update.
Description
A vulnerability in the Linux kernel's e1000 network driver was fixed to prevent an out-of-bounds read in the e1000_tbi_should_accept() function. The issue occurs when the function reads the last byte of a frame without validating the frame length, potentially accessing memory beyond the receive buffer. This flaw could lead to a kernel slab-out-of-bounds read, causing system instability or denial of service. The vulnerability affects certain linux-aws kernel versions prior to specific 5.15.x releases. A patch is available that rejects frames with invalid lengths, preventing the out-of-bounds access while preserving intended functionality.
References
- ubuntu.com/security/CVE-2025-71093 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71093 (opens in a new tab)
- git.kernel.org/linus/9c72a5182ed92904d01057f208c390a303f00a0f (opens in a new tab)
- git.kernel.org/stable/c/26c8bebc2f25288c2bcac7bc0a7662279a0e817c (opens in a new tab)
- git.kernel.org/stable/c/2c4c0c09f9648ba766d399917d420d03e7b3e1f8 (opens in a new tab)
- git.kernel.org/stable/c/9c72a5182ed92904d01057f208c390a303f00a0f (opens in a new tab)
- git.kernel.org/stable/c/ad7a2a45e2417ac54089926b520924f8f0d91aea (opens in a new tab)
- git.kernel.org/stable/c/ee7c125fb3e8b04dd46510130b9fc92380e5d578 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8116-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-8141-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8163-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8163-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8179-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-2 (opens in a new tab)