CVE-2024-36890
In the Linux kernel, the following vulnerability has been resolved: mm/slab: make __free(kfree) accept error pointers Currently, if an automatically freed allocation is an error pointer that will lead to a crash.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: mm/slab: make __free(kfree) accept error pointers Currently, if an automatically freed allocation is an error pointer that will lead to a crash. An example of this is in wm831x_gpio_dbg_show(). 171 char *label __free(kfree) = gpiochip_dup_line_label(chip, i); 172 if (IS_ERR(label)) { 173 dev_err(wm831x->dev, "Failed to duplicate label\n"); 174 continue; 175 } The auto clean up function should check for error pointers as well, otherwise we're going to keep hitting issues like this.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-763
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/79cbe0be6c0317b215ddd8bd3e32f0afdac48543Patch
- https://git.kernel.org/stable/c/946771c2a2b1150f9b7286feadc3aa1e15a1eb16
- https://git.kernel.org/stable/c/9f6eb0ab4f95240589ee85fd9886a944cd3645b2Patch
- https://git.kernel.org/stable/c/ac6cf3ce9b7d12acb7b528248df5f87caa25fcdcPatch
- https://git.kernel.org/stable/c/cd7eb8f83fcf258f71e293f7fc52a70be8ed0128Patch
- https://git.kernel.org/stable/c/edca32f87329d6e341d2143a3b58ec254e8f6b88
- https://git.kernel.org/stable/c/79cbe0be6c0317b215ddd8bd3e32f0afdac48543Patch
- https://git.kernel.org/stable/c/9f6eb0ab4f95240589ee85fd9886a944cd3645b2Patch
- https://git.kernel.org/stable/c/ac6cf3ce9b7d12acb7b528248df5f87caa25fcdcPatch
- https://git.kernel.org/stable/c/cd7eb8f83fcf258f71e293f7fc52a70be8ed0128Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.