CVE-2024-39489: ipv6: sr: fix memleak in seg6_hmac_init_algo
First published: Wed Jul 10 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix memleak in seg6_hmac_init_algo seg6_hmac_init_algo returns without cleaning up the previous allocations if one fails, so it's going to leak all that memory and the crypto tfms. Update seg6_hmac_exit to only free the memory when allocated, so we can reuse the code directly.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.10<4.19.316 | |
| Linux Kernel | >=4.20<5.4.278 | |
| Linux Kernel | >=5.5<5.10.219 | |
| Linux Kernel | >=5.11<5.15.161 | |
| Linux Kernel | >=5.16<6.1.93 | |
| Linux Kernel | >=6.2<6.6.33 | |
| Linux Kernel | >=6.7<6.9.4 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/stable/c/afd5730969aec960a2fee4e5ee839a6014643976
- https://git.kernel.org/stable/c/4a3fcf53725b70010d1cf869a2ba549fed6b8fb3
- https://git.kernel.org/stable/c/daf341e0a2318b813427d5a78788c86f4a7f02be
- https://git.kernel.org/stable/c/61d31ac85b4572d11f8071855c0ccb4f32d76c0c
- https://git.kernel.org/stable/c/599a5654215092ac22bfc453f4fd3959c55ea821
- https://git.kernel.org/stable/c/0e44d6cbe8de983470c3d2f978649783384fdcb6
- https://git.kernel.org/stable/c/f6a99ef4e056c20a138a95cc51332b2b96c8f383
- https://git.kernel.org/stable/c/efb9f4f19f8e37fde43dfecebc80292d179f56c6
- https://git.kernel.org/linus/efb9f4f19f8e37fde43dfecebc80292d179f56c6
- https://security-tracker.debian.org/tracker/CVE-2024-39489
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39489
- https://nvd.nist.gov/vuln/detail/CVE-2024-39489
- https://launchpad.net/bugs/cve/CVE-2024-39489
- https://ubuntu.com/security/CVE-2024-39489
Frequently Asked Questions
What is the severity of CVE-2024-39489?
CVE-2024-39489 has a medium severity rating due to its potential for causing memory leaks in the Linux kernel.
How do I fix CVE-2024-39489?
To fix CVE-2024-39489, ensure that you update to the specified patched versions of the Linux kernel which are not vulnerable.
What systems are affected by CVE-2024-39489?
CVE-2024-39489 affects various versions of the Linux kernel ranging from 4.10 to 6.6.33.
Is there a patch available for CVE-2024-39489?
Yes, patches for CVE-2024-39489 are available in the updated versions of the Linux kernel.
What is the impact of not addressing CVE-2024-39489?
Failing to address CVE-2024-39489 may lead to memory leaks, resulting in degraded system performance and potential service interruptions.
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