CVE-2024-27414

Medium

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back In the commit d73ef2d69c0d ("rtnetlink: let rtnl_bridge_setlink checks IFLA_BRIDGE_MODE length"), an adjustment was made to the old loop logic in the function `rtnl_bridge_setlink` to enable the loop to also check the length of the IFLA_BRIDGE_MODE attribute. However, this adjustment removed the `break` statement and led to an error logic of the flags writing back at the end of this function. if (have_flags) memcpy(nla_data(attr), &flags, sizeof(flags)); // attr should point to IFLA_BRIDGE_FLAGS NLA !!! Before the mentioned commit, the `attr` is granted to be IFLA_BRIDGE_FLAGS. However, this is not necessarily true fow now as the updated loop will let the attr point to the last NLA, even an invalid NLA which could cause overflow writes. This patch introduces a new variable `br_flag` to save the NLA pointer that points to IFLA_BRIDGE_FLAGS and uses it to resolve the mentioned error logic.

Package Linux Kernel
Published 2024-05-17
Last modified 2025-12-17
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.4.253, 5.10.190, 5.15.126, 6.1.45, 6.4.10, 6.5 and later are affected. Fixed in 5.4.271, 5.10.212, 5.15.151, 6.1.81, 6.6.21, 6.7.9, 6.8 and their respective stable series.

Affected from
≥ 5.4.253 ≥ 5.10.190 ≥ 5.15.126 ≥ 6.1.45 ≥ 6.4.10 ≥ 6.5
Fixed in
✓ 5.4.271 5.4.x ✓ 5.10.212 5.10.x ✓ 5.15.151 5.15.x ✓ 6.1.81 6.1.x ✓ 6.6.21 6.6.x ✓ 6.7.9 6.7.x ✓ 6.8

References

8 total
Showing 5 of 8 references View all on NVD

Frequently asked questions

  • What is CVE-2024-27414?

    CVE-2024-27414 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.4.253 onward and has been patched in 5.4.271, 5.10.212, 5.15.151 and others. CVE-2024-27414 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-27414?

    CVE-2024-27414 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2024-27414?

    Yes. CVE-2024-27414 has been patched. Fixed versions include 5.4.271, 5.10.212, 5.15.151 and others. If you are running Linux kernel 5.4.253 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-27414 actively exploited?

    No. CVE-2024-27414 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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