VulnerabilityModified
CVE-2021-47521
In the Linux kernel, the following vulnerability has been resolved: can: sja1000: fix use after free in ems_pcmcia_add_card() If the last channel is not available then "dev" is freed.
HIGH 7.8EPSS 0.24%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: can: sja1000: fix use after free in ems_pcmcia_add_card() If the last channel is not available then "dev" is freed. Fortunately, we can just use "pdev->irq" instead. Also we should check if at least one channel was set up.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6becPatch
- https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2aPatch
- https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45Patch
- https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039cePatch
- https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288Patch
- https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36Patch
- https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4Patch
- https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aaPatch
- https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6becPatch
- https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2aPatch
- https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45Patch
- https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039cePatch
- https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288Patch
- https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36Patch
- https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4Patch
- https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aaPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.