CVE-2024-40996
HighIn the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We'd like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn't interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace.
CVSS 3.1 score
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected versions
Linux kernel versions
6.1.86,
6.6.27,
6.8.6,
6.9
and later are affected. Fixed in
6.1.96,
6.6.36,
6.9.7,
6.10
and their respective stable series.
References
5 total-
Patch
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Patch
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Patch
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Patch
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Frequently asked questions
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What is CVE-2024-40996?
CVE-2024-40996 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.1.86 onward and has been patched in 6.1.96, 6.6.36, 6.9.7 and others. CVE-2024-40996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2024-40996?
CVE-2024-40996 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. -
Is there a patch available for CVE-2024-40996?
Yes. CVE-2024-40996 has been patched. Fixed versions include 6.1.96, 6.6.36, 6.9.7 and others. If you are running Linux kernel 6.1.86 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2024-40996 actively exploited?
No. CVE-2024-40996 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.