CVE-2024-36940: pinctrl: core: delete incorrect free in pinctrl_enable()
First published: Thu May 30 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: pinctrl: core: delete incorrect free in pinctrl_enable() The "pctldev" struct is allocated in devm_pinctrl_register_and_init(). It's a devm_ managed pointer that is freed by devm_pinctrl_dev_release(), so freeing it in pinctrl_enable() will lead to a double free. The devm_pinctrl_dev_release() function frees the pindescs and destroys the mutex as well.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.19.314 | 4.19.314 |
| redhat/kernel | <5.4.276 | 5.4.276 |
| redhat/kernel | <5.10.217 | 5.10.217 |
| redhat/kernel | <5.15.159 | 5.15.159 |
| redhat/kernel | <6.1.91 | 6.1.91 |
| redhat/kernel | <6.6.31 | 6.6.31 |
| redhat/kernel | <6.8.10 | 6.8.10 |
| redhat/kernel | <6.9 | 6.9 |
| Linux kernel | >=4.11<4.19.314 | |
| Linux kernel | >=4.20<5.4.276 | |
| Linux kernel | >=5.5<5.10.217 | |
| Linux kernel | >=5.11<5.15.159 | |
| Linux kernel | >=5.16<6.1.91 | |
| Linux kernel | >=6.2<6.6.31 | |
| Linux kernel | >=6.7<6.8.10 | |
| Linux kernel | =6.9-rc1 | |
| Linux kernel | =6.9-rc2 | |
| Linux kernel | =6.9-rc3 | |
| Linux kernel | =6.9-rc4 | |
| Linux kernel | =6.9-rc5 | |
| Linux kernel | =6.9-rc6 | |
| Debian | =10.0 | |
| 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/288bc4aa75f150d6f1ee82dd43c6da1b438b6068
- https://git.kernel.org/stable/c/41f88ef8ba387a12f4a2b8c400b6c9e8e54b2cca
- https://git.kernel.org/stable/c/5038a66dad0199de60e5671603ea6623eb9e5c79
- https://git.kernel.org/stable/c/558c8039fdf596a584a92c171cbf3298919c448c
- https://git.kernel.org/stable/c/735f4c6b6771eafe336404c157ca683ad72a040d
- https://git.kernel.org/stable/c/ac7d65795827dc0cf7662384ed27caf4066bd72e
- https://git.kernel.org/stable/c/cdaa171473d98962ae86f2a663d398fda2fbeefd
- https://git.kernel.org/stable/c/f9f1e321d53e4c5b666b66e5b43da29841fb55ba
- https://launchpad.net/bugs/cve/CVE-2024-36940
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36940
- https://nvd.nist.gov/vuln/detail/CVE-2024-36940
- https://security-tracker.debian.org/tracker/CVE-2024-36940
- https://ubuntu.com/security/CVE-2024-36940
- https://access.redhat.com/security/cve/CVE-2024-36940
- https://lore.kernel.org/linux-cve-announce/2024053043-CVE-2024-36940-0c83@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2284478
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2284477
- https://git.kernel.org/linus/5038a66dad0199de60e5671603ea6623eb9e5c79
- https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Frequently Asked Questions
What is the severity of CVE-2024-36940?
CVE-2024-36940 is classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2024-36940?
To fix CVE-2024-36940, update to a kernel version that is equal to or higher than the remedied versions specified in the vulnerability report.
What are the affected kernel versions for CVE-2024-36940?
CVE-2024-36940 affects several kernel versions, specifically those below 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, 6.6.31, and 6.8.10.
Which Linux distributions are impacted by CVE-2024-36940?
CVE-2024-36940 impacts various distributions that utilize vulnerable kernel versions, particularly those based on the Red Hat and Debian kernels.
Is CVE-2024-36940 being actively exploited?
There are currently no reports indicating active exploitation of CVE-2024-36940 in the wild.
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